Vascular System Flashcards
Arteries
Deliver blood to tissues, carry blood away from heart
Elastic
Largest
Secondary pump
Muscular
Lots of smooth muscle
Regulate blood pressure
Arterioles
No middle layer
Outers layers
CT
Middle layers
Smooth muscles
Inner layers
ET, simple squamous
Veins
Receive blood from tissues
Venules
Small veins, no smooth muscle
Capillaries
Delivery and receiving
Only inner layer
Continuous capillaries
Solid wall
Fenestrated
Holes/channels
Membrane lines,no leaking
Sinusoid capillaries
In liver and spleen
Have gaps in between adjacent and epithelial cells
Difference between arteries and veins
Arteries have thicker muscle layer than veins
Tunica externa or adventitia
CT Layer
Tunica media
Middle
Thicken in arteries
Tunica intima
Intima(close to blood)
Interna
Endothelium
Valves in veins
Capillaries layers have
Endothelium only
Capillary beds
Arterioles->Metarteriole->Throughfare channel
Guarantees blood can flow from arterioles venule
Precapillary sphincters
Maximizes blood flow
Collaterals
2 blood vessels running parallel to each other (basilar artery) delivering blood to same area
Anastamosis
Arteries fusing together
Veins carry..
Most of our blood
Common carotid
Blood supple to head
Internal carotid
Supplies brain
Anastomoses w basilar via circle of Willis
External carotid
Delivers blood to superficial regions
Supplies most of the head and neck
Facial, occipital, and superficial temporal
Vertebral to
Basilar
Anterior and posterior inferior cerebellars and superior cerebellars
Branch off basilar artery
What are the parts of the circle of Willis and it’s branches?
Posterior, middle, anterior cerebral arteries
Subclavian artery
Upper extremity (arm)
Thyrocervical trunk
Neck
Axillary
Arm pit
Brachial
Arm ish
Radial
Lateral
Ulnar
Middle
Bronchials
Blood supple to lungs
Mediastinal
Around heart
Intercostals
Muscles in between ribs
Pericardials
Pericardial sac
Esophageal
Esophagus
Superior phrenic
Diaphragm
Parts of thoracic aorta
Bronchials Mediastinal Intercostals Pericardials Esophageal Superior phrenic
Parts of abdominal aorta
Inferior phrenic Celiac trunk Superior mesenteric Renals Gonadals Inferior mesenteric Lumbar arteries Common iliac arteries Cecum Ascending colon Transverse colon Descending colon
Left gastric
Stomach blood supply
Splenic
Spleen
Common hepatic
Liver
Right gastric
Superior mesenteric
Small and large intestine
Renals
Kidneys
Gonadals
Testicular/ovarian
Inferior mesenteric
Left colic (descending)
Sigmoid (colon)
Rectal (colon)
Lumbar arteries
Lower back
External iliac
Leg
Internal iliac
Pelvis
Bladder and external genitalia
Femoral
Femur
Deep femoral
Deep muscle of leg
Popliteal
Behind knee
Anterior tibial
Dorsal pedis-> dorsal arch
Posterior tibial
Medial and lateral plantar arteries-> plantar arch
Fibular
Internal jugular
Sinuses of brain
Facial
Anastamosis with external jugular
External jugular
Occipital, temporal, maxillary
Vertebral
Drains cervical region
Basilic
Medial vein
Superficial
Cephalic
Lateral superficial
Brachial
Deep structures
Ulnar and radial
Median cubital
Cephalic to basilic and axillary
Axillary
Fusion of basilic and brachial
Cephalic and axillary vein fuse..
To form subclavian
Subclavian to
Brachiocephalic to superior vena cava
Azygos
Alternate route for blood to get back to heart from lower regions
Intercostals
Drain blood in between ribs
Mediastinal
Take blood from medial region
Esophogeals
Receiving blood from esophagus and delivering it to superior vena cava
Renal
Left gonadal
Phrenic
Diaphragm
Hepatic
Lots of veins
Taking blood from liver
Common iliac
Internal iliac: pelvis
External iliac: leg
Hepatic portal system
All delivered to liver
Taking from liver back to superior vena cava
L and R gastric
Splenic
Superior mesenteric
Inferior mesenteric
-superior rectal and left colic
Dorsal venous arch of foot
Great saphenous:longest vein
Plantar venous arch
Anterior and posterior tibial, fibular
Popliteal: fuse to form small saphenous vein
Femoral: deep muscles like great saphenous
-deep femoral
