#vein__vena a blood vessel that carries blood from the capillaries toward the heart; all veins except the pulmonary carry unaerated blood
supertype: #blood_vessel__bloodvessel a vessel in which blood circulates
part of: #circulatory_system
subtype: #accessory_cephalic_vein__vena_cephalica_accessoria a vein that passes along the radial edge of the forearm and joins the cephalic vein near the elbow
subtype: #accessory_hemiazygos_vein__accessory_hemiazygous_vein__accessoryhemiazygousvein__vena_hemiazygos_accessoria a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein
subtype: #accessory_vertebral_vein__accessoryvertebralvein__vena_vertebralis_accessoria a vein that accompanies the vertebral vein but passes through the foramen of the transverse process of the 7th cervical vertebra and empties into the brachiocephalic vein
subtype: #accompanying_vein__vena_comitans a vein accompanying another structure; a vein may accompany an artery in such a way that the arterial pulses aid venous return
subtype: #anastomotic_vein__anastomoticvein__venaanastomotica either of two communicating veins serving the brain
subtype: #angular_vein__angularvein__venaangulari a short vein formed by the supraorbital vein and the supratrochlear vein and continuing as the facial vein
subtype: #anterior_vertebral_vein__vena_vertebralis_anterior a vein that accompanies the ascending cervical artery and opens into the vertebral vein
subtype: #appendicular_vein__vena_appendicularis a vein that accompanies the appendicular artery and empties into the ileocolic vein
subtype: #arcuate_vein_of_the_kidney__vena_arcuata_renis veins that receive blood from interlobular veins of kidney and rectal venules
subtype: #auricular_vein__auricularvein__vena_auricularis one of two veins serving the ear region
subtype: #axillary_vein__vena_axillaris a continuation of the basilic vein and brachial vein that becomes the subclavian vein
subtype: #azygos_vein__azygous_vein__azygousvein__vena_azygos one of a system of veins that drain the thoracic and abdominal walls; arises as a continuation of the right ascending lumbar vein and terminates in the superior vena cava
subtype: #basal_vein__basalvein__vena_basalis a large vein passing along the medial surface of the temporal lobe and emptying into the great cerebral vein
subtype: #basilic_vein__basilicvein__vena_basilica a vein that drains the back of the hand and forearm and empties into the axillary vein
subtype: #basivertebral_vein__basivertebralvein__vena_basivertebralis one of a number of veins draining the spongy substance of the vertebrae and emptying into the anterior internal vertebral venous plexus
subtype: #brachial_vein__vena_brachialis two veins in either arm that accompany the brachial artery and empty into the axillary vein
subtype: #brachiocephalic_vein__brachiocephalicvein__innominate_vein__vena_brachiocephalica veins formed by the union of the internal jugular and subclavian veins
subtype: #bronchial_vein__bronchialvein__vena_bronchialis veins serving the bronchi; empty into the azygos vein
subtype: #cardinal_vein any of the major venous channels in primitive adult vertebrates and in embryos of higher vertebrates
subtype: #anterior_cardinal_vein a major drainage channel from the cephalic part of the body
subtype: #posterior_cardinal_vein a major drainage channel from the caudal part of the body
subtype: #common_cardinal_vein the major return channels to the heart; formed by anastomosis of the anterior and posterior cardinal veins
subtype: #central_veins_of_liver__venae_centrales_hepatis__venaecentraleshepati terminal branches of the hepatic veins that lie in the hepatic lobules and receive blood from the liver sinusoids
subtype: #central_vein_of_retina__vena_centrales_retinae vein formed by the union of the retinal veins; accompanies central arteries of the retina in the optic nerve
subtype: #central_vein_of_suprarenal_gland__vena_centralis_glandulae_suprarenalis a single draining vein; on the right it empties into the inferior vena cava; on the left it empties into the left renal vein
subtype: #cephalic_vein__vena_cephalica a large vein of the arm that empties into the axillary vein
subtype: #cerebellar_vein__vena_cerebellum the veins draining the cerebellum
subtype: #cerebral_vein__vena_cerebri any of several veins serving the cerebral hemispheres of the brain
subtype: #anterior_cerebral_vein__vena_cerebri_anterior accompanies the anterior cerebral artery and empties into the basal vein
subtype: #great_cerebral_vein__vena_cerebri_magna a cerebral vein formed by the two internal cerebral veins and continuing into the sinus rectus
subtype: #inferior_cerebral_vein__venae_cerebrum_inferior veins that drain the undersurface of the cerebral hemispheres and empty into the cavernous and transverse sinuses
subtype: #internal_cerebral_vein__vena_cerebrum_internus two paired veins passing caudally near the midline and uniting to form the great cerebral vein
subtype: #middle_cerebral_vein__vena_cerebri_media either of two cerebral veins
subtype: #deep_middle_cerebral_vein accompanies the middle cerebral artery deep in the Sylvian fissure; empties into the basal vein
subtype: #superficial_middle_cerebral_vein a large vein along the line of the Sylvian fissure to the cavernous sinus
subtype: #superior_cerebral_vein__vena_cerebrum_superior a cerebral vein that drains the dorsal convexity of the cerebral hemisphere and empties into the cavernous sinus
subtype: #deep_cervical_vein__cervical_vein__vena_cervicalis_profunda a vein that accompanies an artery of the same name
subtype: #choroid_vein__choroidvein__vena_choroidea either of two veins serving the choroid coat of the eye
subtype: #ciliary_veins__ciliaryvein__venae_ciliares small veins coming from the ciliary body
subtype: #circumflex_vein__vena_circumflexa any of several curved parallel veins accompanying arteries of the same name
subtype: #circumflex_iliac_vein__vena_circumflexa_ilium accompanies the artery of the same name
subtype: #circumflex_femoral_vein__vena_circumflexus_femoris__venacircumflexusfemori either of two veins that accompany arteries of the same name serving the hip and thigh
subtype: #clitoral_vein__vena_clitoridis veins that serve the clitoris
subtype: #venae_profundae_clitoridis deep veins of the clitoris; join the vesical plexus
subtype: #vena_dorsalis_clitoridis_profunda deep dorsal vein of the clitoris; tributary of the vesical venous plexus
subtype: #venae_dorsales_clitoridis_superficiales superficial dorsal veins of the clitoris; tributaries of the external pudendal vein on either side
subtype: #colic_vein__colicvein__vena_colica vein serving the large intestine
subtype: #common_facial_vein vein formed by union of facial vein and the retromandibular vein and emptying into the jugular vein
subtype: #conjunctival_veins__venae_conjunctivales veins draining the conjunctiva
subtype: #costoaxillary_vein__costoaxillaryvein one of several veins connecting intercostal veins with with the lateral thoracic vein or the thoracoepigastric vein
subtype: #cutaneous_vein__cutaneousvein__vena_cutanea one of a number of veins in the subcutaneous tissue that empty into deep veins
subtype: #cystic_vein__vena_cystica vein that drains the gallbladder
subtype: #digital_vein__digitalvein__vena_digitalis one of the veins serving the fingers or toes
subtype: #diploic_vein__diploicvein__venadiploica one of the veins serving the spongy part of the cranial bones
subtype: #dorsal_scapular_vein__vena_scapularis_dorsalis vein that is a tributary of the subclavian vein or external jugular vein and accompanies the descending scapular artery
subtype: #emissary_vein__vena_emissaria one of several connecting veins in the scalp and head that drain blood from sinuses in the dura mater to veins outside the skull
subtype: #epigastric_vein veins serving the anterior walls of the abdomen
subtype: #inferior_epigastric_vein__vena_epigastrica_inferior empties into the external iliac vein
subtype: #superficial_epigastric_vein__vena_epigastrica_superficialis empties into the great saphenous vein
subtype: #superior_epigastric_veins__venae_epigastricae_superiores veins that accompany the superior epigastric artery
subtype: #esophageal_veins__oesophageal_veins__oesophagealvein__venae_esophageae__venaeesophageae small veins from the esophagus emptying into the brachiocephalic vein or the azygos veins
subtype: #ethmoidal_vein__ethmoidalvein__vena_ethmoidalis veins that drain the ethmoidal sinuses and empty into the superior ophthalmic vein
subtype: #external_nasal_vein__vena_nasalis_externa one of the veins that drain the external nose and empty into the angular or facial vein
subtype: #facial_vein__vena_facialis any of several veins draining the face
subtype: #anterior_facial_vein__vena_facialis_anterior a continuation of the angular vein; unites with the retromandibular vein before emptying into the internal jugular vein
subtype: #retromandibular_vein__retromandibularvein__vena_retromandibularis__posterior_facial_vein posterior branch of the facial vein; formed by temporal veins in front of the ear
subtype: #femoral_vein__femoralvein__vena_femoralis a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein
subtype: #gastric_vein__gastricvein__vena_gastrica one of several veins draining the stomach walls
subtype: #left_gastric_vein__vena_gastrica_sinistra arises from a union of veins from the gastric cardia; runs in the lesser omentum; empties into the portal vein
subtype: #pyloric_vein__pyloricvein__right_gastric_vein__rightgastricvein__vena_gastrica-dextra receives veins from the upper surfaces of the stomach and empties into the portal vein
subtype: #gastroomental_vein__gastroomentalvein__gastroepiploic_vein__vena_gastroomentalis one of two veins serving the great curvature of the stomach
subtype: #genicular_vein__genicularvein__vena_genus veins that drain blood from structures around the knee; empty into the popliteal vein
subtype: #gluteal_vein__glutealvein__vena_gluteus veins draining the gluteal muscles on either side of the body
subtype: #hemizygos_vein__hemizygosvein__hemizygous_vein__vena_hemizygos a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein
subtype: #hemorrhoidal_vein__rectal_vein__vena_rectalis any of several veins draining the walls of the anal canal and rectum
subtype: #hepatic_vein__hepaticvein__vena_hepatica a vein that drains the liver; empties into the vena cava
subtype: #ileocolic_vein__ileocolicvein__vena_ileocolica a vein that drains the end of the ileum and the appendix and the cecum and the lower part of the ascending colon
subtype: #iliac_vein__iliacvein__vena_iliaca one of three veins draining the pelvic area
subtype: #hypogastric_vein__hypogastricvein__internal_iliac_vein a vein that unites with the external iliac vein to form the common iliac vein
subtype: #external_iliac_vein a continuation of the femoral vein; unites with the internal iliac vein to form the common iliac vein
subtype: #common_iliac_vein formed by the internal and external iliac veins; unites with its fellow from the opposite side of the body to form the inferior vena cava
subtype: #iliolumbar_vein__vena_iliolumbalis a branch of the internal iliac vein
subtype: #intercapitular_vein__vena_intercapitalis veins connecting the dorsal and palmar veins of the hand or the dorsal and plantar veins of the foot
subtype: #intercostal_vein__intercostalvein__vena_intercostalis several veins draining the intercostal spaces of the rib cage
subtype: #intervertebral_vein__vena_intervertebralis one of several veins accompanying spinal nerves
subtype: #jugular_vein__jugularvein__vena_jugularis__jugular veins in the neck that return blood from the head
subtype: #anterior_jugular_vein arises below the chin from veins draining the lower face; joins the external jugular vein
subtype: #external_jugular_vein formed by the junction of the posterior auricular and the retromandibular veins; empties into the subclavian vein
subtype: #internal_jugular_vein a continuation of the sigmoid sinus of the dura mater; joins the subclavian vein to form the brachiocephalic vein
subtype: #labial_vein__vena_labialis a vein draining the lips of the mouth
subtype: #inferior_labial_vein__vena_labialis_inferior a tributary of the facial vein that drains the lower lip
subtype: #superior_labial_vein__vena_labialis_superior a tributary of the facial vein that drains the upper lip
subtype: #vena_labialis__labial_vein veins draining the lips of the vulva
subtype: #venae_labiales_anteriores__anterior_labial_veins veins from the labia majora to the external pudendal vein
subtype: #venae_labiales_posteriores__posterior_labial_veins veins that pass posterior from the labia majora to the internal pudendal vein
subtype: #labyrinthine_vein__internal_auditory_vein veins that drain the inner ear
subtype: #lacrimal_vein__vena_lacrimalis drains the lacrimal gland; empties into the superior ophthalmic vein
subtype: #laryngeal_vein__laryngealvein__vena_laryngea one of two veins draining the larynx
subtype: #lingual_vein__lingualvein__vena_lingualis a vein that receives blood from the tongue and the floor of the mouth and empties into the internal jugular or the facial vein
subtype: #lumbar_vein__vena_lumbalis veins that drain the posterior body wall and the lumbar vertebral venous plexuses
subtype: #maxillary_vein__maxillaryvein__vena_maxillaris posterior continuation of the pterygoid plexus; joins the superficial temporal vein to form the retromandibular vein
subtype: #meningeal_veins__meningealvein__venae_meningeae veins at accompany the meningeal arteries
subtype: #mesenteric_vein__vena_mesenterica a tributary of the portal vein passing from the intestine between the two layers of mesentery
subtype: #metacarpal_vein__vena_metacarpus dorsal and palmar veins of the hand
subtype: #metatarsal_vein__vena_metatarsus dorsal and plantar branches of veins serving the metatarsal region of the foot
subtype: #musculophrenic_vein__vena_musculophrenica veins that drain the upper abdominal wall and the lower intercostal spaces and the abdomen
subtype: #nasofrontal_vein__nasofrontalvein__vena_nasofrontalis a vein located in the anterior medial part of the orbit; connects the superior ophthalmic with the angular vein
subtype: #oblique_vein_of_the_left_atrium__vena_obliqua_atrii_sinistri a tributary of the coronary sinus; on the posterior wall of the left atrium
subtype: #obturator_vein__obturatorvein__vena_obturatoria a vein formed by the union of tributaries that drain the hip joints and thigh muscles; empties into the internal iliac vein
subtype: #occipital_vein__occipitalvein__vena_occipitalis a vein that drains the occipital region
subtype: #ophthalmic_vein__vena_ophthalmica either of two veins that serve the eye; empties into the cavernous sinus
subtype: #inferior_ophthalmic_vein a vein that drains a venous network in the floor and medial wall of the eye socket
subtype: #superior_ophthalmic_vein a vein that begins at the inner angle of the eye socket and passes through the superior orbital fissure to empty into the cavernous sinus
subtype: #ovarian_vein__ovarianvein__vena_ovarica one of the veins that drain the ovaries; the right opens into the inferior vena cava; the left opens into the left renal vein
subtype: #palatine_vein__vena_palatina a vein that drains the region of the palate and empties into the facial vein
subtype: #pancreatic_vein__venae_pancreatica__venaepancreatica veins draining the pancreas and emptying into the superior mesenteric and splenic veins
subtype: #paraumbilical_vein__paraumbilicalvein__vena_paraumbilicalis small veins arising in skin around the navel; terminate as accessory portal veins
subtype: #parotid_vein__parotidvein parotid branches of the facial vein; drain part of the parotid gland and empty into the retromandibular vein
subtype: #pectoral_vein__vena_pectoralis veins that drain the pectoral muscles and empty into the subclavian vein
subtype: #perforating_vein__perforatingvein__venaperforanti veins that accompany the perforating arteries; drain leg muscles; empty into the deep femoral vein
subtype: #pericardial_vein__pericardialvein__venapericardiaca several small veins from the pericardium
subtype: #peroneal_vein__fibular_vein__fibularvein__vena_peroneus accompany the peroneal arteries; arising in the heel and running up the back of the leg to join the posterior tibial veins of the popliteal vein
subtype: #pharyngeal_vein__vena_pharyngeus veins from the pharyngeal plexus that empty into the internal jugular vein
subtype: #phrenic_vein__phrenicvein__vena_phrenica either of two veins that drain the diaphragm
subtype: #popliteal_vein__poplitealvein__vena_poplitea a vein arising in the knee and ascending to become the femoral vein
subtype: #hepatic_portal_vein__portal_vein__vena_portae a short vein that carries blood into the liver
subtype: #posterior_vein_of_the_left_ventricle__vena_posterior_ventriculi_sinistri arises near the apex of the heart and empties into the coronary sinus
subtype: #prepyloric_vein__vena_pylorica a tributary of the right gastric vein
subtype: #pudendal_vein__venae_pudendum__venaepudendum vein of the pudendum
subtype: #pulmonary_vein__pulmonaryvein__vena_pulmonalis any of four veins that carry arterial blood from the lungs to the left atrium of the heart
subtype: #inferior_pulmonary_vein__vena_pulmanalis_inferior either of two pulmonary veins (left and right) returning blood from the inferior lobes of the lungs
subtype: #superior_pulmonary_vein__vena_pulmonalis_superior either of two pulmonary veins (left and right) returning blood from the superior lobes of the lungs
subtype: #radial_vein__vena_radialis superficial veins ascending the radial side of the forearm; combines with the ulnar veins to form the brachial vein
subtype: #renal_vein__renalvein__vena_renalis veins that accompany renal arteries; open into the vena cava at the level of the 2nd lumbar vertebra
subtype: #sacral_vein__vena_sacralis vein of the sacral region
subtype: #saphenous_vein__saphenousvein__vena_saphena either of two chief superficial veins of the leg that drain blood from the foot
subtype: #long_saphenous_vein__great_saphenous_vein__greatsaphenousvein the longest vein in the body; runs from foot to the groin where it joins the femoral vein
subtype: #short_saphenous_vein__shortsaphenousvein a vein running from the foot up the back of the leg to the knee
subtype: #scleral_veins__scleralvein__venae_sclerales__venaesclerale tributaries of the anterior ciliary veins that drain the sclera of the eye
subtype: #scrotal_vein__scrotalvein__vena_scrotalis veins passing from the scrotum to the pudendal veins
subtype: #sigmoid_vein__sigmoidvein__venasigmoideu tributaries of the inferior mesenteric vein; drains the sigmoid colon
subtype: #spinal_vein__vena_spinalis__venaspinali veins that drain the spinal cord
subtype: #splenic_vein__splenicvein__vena_lienalis a vein formed by several small veins on the surface of the spleen; joins the superior mesenteric to form the portal vein
subtype: #sternocleidomastoid_vein__sternocleidomastoidvein__vena_sternocleidomastoidea drains the sternocleidomastoid muscle; empties into the internal jugular vein
subtype: #stylomastoid_vein__vena_stylomastoidea a vein that drains the tympanic cavity and empties into the retromandibular vein
subtype: #subclavian_vein__vena_subclavia a continuation of the axillary vein; joins the internal jugular to form the brachiocephalic vein
subtype: #sublingual_vein__vena_sublingualis a tributary of the lingual vein
subtype: #supraorbital_vein__vena_supraorbitalis drains the front of the scalp; unites with the supratrochlear vein to form the angular vein
subtype: #supratrochlear_vein__vena_supratrochlearis drains the front of the scalp; unites with the supraorbital vein to form the angular vein
subtype: #temporal_vein__vena_temporalis any of several veins draining the temporal region
subtype: #deep_temporal_vein temporal veins that empty into the pterygoid plexus
subtype: #middle_temporal_vein arises near the eye; joins the superficial temporal veins to form the retromandibular vein
subtype: #superficial_temporal_vein join the middle temporal vein to empty into the retromandibular vein
subtype: #testicular_vein__vena_testicularis a vein from the testicles
subtype: #thalamostriate_vein a vein serving the thalamus and corpus striatum
subtype: #superior_thalamostriate_vein a long vein that helps to form the internal cerebral vein
subtype: #inferior_thalamostriate_vein__striate_vein__striatevein tributaries to the basal vein
subtype: #thoracoepigastric_vein__thoracoepigastricvein__vena_thoracoepigastrica a vein arising from the region of the superficial epigastric vein and opening into the axillary vein or thoracic vein
subtype: #thoracic_vein__vena_thoracica veins that drain the thoracic walls
subtype: #thyroid_vein__thyroidvein__vena_thyroidea any of several small veins draining blood from the thyroid area
subtype: #inferior_thyroid_vein any of several veins on each side that drain the thyroid gland and empty into the innominate vein
subtype: #middle_thyroid_vein a vein on each side that drains the lateral part of the thyroid and empties into the internal jugular vein
subtype: #superior_thyroid_vein a vein on each side that drains the upper part of the thyroid and empties into the internal jugular vein
subtype: #tibial_vein__vena_tibialis veins of the lower leg; empty into the popliteal vein
subtype: #tracheal_vein__vena_trachealis several small veins from the trachea
subtype: #tympanic_vein veins from the tympanic cavity that empty into the retromandibular vein
subtype: #ulnar_vein__ulnarvein__vena_ulnaris any of several veins of the forearm
subtype: #umbilical_vein__umbilicalvein__vena_umbilicalis a vein in the umbilical cord; returns nutrient blood from the placenta to the fetus
subtype: #uterine_vein__uterinevein one of two veins on each side that arise from the uterine plexus and empty into the internal iliac vein
subtype: #varicose_vein a vein that is permanently dilated; most common in the legs
subtype: #vena_bulbi_penis vein of the head of the penis; tributary of the internal pudendal vein that drains the perineum
subtype: #vena_canaliculi_cochleae vein of the cochlear canal
subtype: #vein_of_penis a vein serving the penis
subtype: #venae_dorsales_penis_superficiales superficial dorsal veins of the penis; paired tributaries of the external pudendal veins on each side
subtype: #venae_dorsales_penis_profunda deep dorsal vein of the penis; tributary of the prostatic plexus
subtype: #vena_profunda_penis deep vein of the penis; enters the prostatic plexus
subtype: #vena_bulbi_vestibuli vein of the vestibular bulb
subtype: #vena_cava either of two large veins that return oxygen-depleted blood to the right atrium of the heart
subtype: #inferior_vena_cava__postcava receives blood from lower limbs and abdominal organs and empties into the posterior part of the right atrium of the heart; formed from the union of the two iliac veins
subtype: #superior_vena_cava__precava receives blood from the head and arms and chest and empties into the right atrium of the heart; formed from the azygos and both brachiocephalic veins
subtype: #venae_palpebrales__venaepalpebrale veins of the eyelids
subtype: #venae_interlobulares_hepatis interlobular veins of the liver
subtype: #venae_renis__venaereni veins of the kidney; drain the kidney into the renal vein
subtype: #venae_interlobulares_renis interlobular veins of the kidney; receive blood from the arcuate vein and empty into the renal veins
subtype: #vertebral_vein__vertebralvein__vena_vertebralis a vein that goes through the foramina of the cervical vertebrae and forms a plexus around the vertebral artery; empties into the brachiocephalic vein
subtype: #vesical_vein__vesicalvein__venavesicali veins that drain the vesical plexus and join the internal iliac veins
subtype: #vestibular_vein__vena_vestibularis veins that drain the saccule and utricle
subtype: #vortex_vein__vorticose_vein__vorticosevein__vena_vorticosum a vein formed by branches from the back surface of the eye and the ciliary body; empties into the ophthalmic veins
subtype: #venule__venula__capillary_vein__capillaryvein a minute vein continuous with a capillary
subtype: #episcleral_veins__venae_episclerales small veins in the sclera near the corneal margin; empty into the anterior ciliary veins
subtype: #stellate_venule a star-shaped group of venules in the renal cortex
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