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Review Ch 21 Blood Vessels

Terms in this set (35)

Carry blood away from the heart.
Also called resistance vessels (more muscular)
Arteries
Carry blood back to the heart.
Also called capacitance vessels (thin walled and flaccid)
Veins
Microscopic vessels, connect smallest arteries to smallest veins.
Also called exchange vessels of the cardiovascular system.
Capillaries
Carotid sinuses- respond to changes in blood pressure
Barorecptor
Carotid/Aortic bodies- monitor changes in blood composition (O₂, CO₂, pH)
Chemoreceptor
Also called intima
Inner lining (endothelium and basement membrane)
Tunica Interna
Contains smooth muscle and collagen
Strengthens vessels; responsible for contraction and dilation
Tunica Media
Also called adventitia
Anchors blood vessel, contains loose connective tissue.
Tunica Externa
Will be found in most tissues, such as skeletal muscle
Uninterrupted tube, but cells have narrow intercellular clefts
Continuous capillaries
Will be found in organs with rapid absorption (kidney, intestines)
Endothelium has holes called filtration pores
Fenestrated capillaries
No definite shape, found in bone marrow, liver and spleen
Endothelial cells separated by wide gaps
Sinusoids
Capillaries are arranged in networks called___. They are supplied by a single____, which links the arterioles with the capillaries. The metarterioles have ___ at the entrance to each capillary. When the sphincters are___, the capillary bed is well perfused with blood. When the sphincters are ___, the capillary beds are bypassed.
Capillary beds, metarteriole, precapillary sphincters, open, closed
These arteries supply the myocardium
Coronary arteries
Two pairs of arteries serving the brain
Vertebral and internal carotid arteries
Major artery serving the tissues external to the skull
External carotid arteries
Drains the blood from the brain and some exterior head structures
Internal jugular vein
The subclavian artery turns into the____
Axillary artery
Major artery serving the arm
Brachial artery
Artery generally used to take the pulse at the wrist
Radial artery
Two superficial veins on the arm
Basilic/Cephalic veins
An arterial trunk that has three major branches that run to the liver, spleen, and stomach
Celiac Trunk
Supplies most of the small intestine and large part of colon
Superior mesenteric artery
Artery that supplies the distal half of the large intestine
Inferior mesenteric artery
Drains all the blood from the digestive viscera
Hepatic portal vein
The hepatic portal vein is formed by the union of 2 veins
Splenic/ Superior mesenteric veins
Other veins that drain into the hepatic portal vein
Gastric vein
Veins draining the liver
Hepatic veins
Veins draining the kidneys
Renal veins
Drains the pelvic organs
Internal iliac veins
Join to form the inferior vena cava
Common iliac veins
What the external iliac artery becomes on entry into the the thigh
Femoral artery
Artery on the dorsum of the foot (you can feel your pulse there)
Dorsalis pedis artery
Long superficial vein in the lower limb
Great saphenous vein
The only arteries in the human body that carry oxygen-poor blood
Pulmonary arteries
The only veins that carry oxygen-rich blood
Pulmonary veins
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