Review Sheet 32 Anatomy of Blood Vessels
NAME ____________________________________ LAB TIME/DATE _______________________ EXERCISE
R E V I E W
S H E E T
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Anatomy of Blood Vessels
Microscopic Structure of the Blood Vessels
1. Cross-sectional views of an artery and of a vein are shown here. Identify each; and on the lines to the sides, note the structural details that enabled you to make these identifications: artery
(vessel type)
vein
(vessel type)
open, circular lumen
(a) (a)
somewhat collapsed lu thinner media
(b)
thick media
(b)
Now describe each tunic more fully by selecting its characteristics from the key below and placing the appropriate key letters on the answer lines. e,d b a, f,c Tunica intima Tunica media Tunica externa Key: a. b. c. d. innermost tunic most superficial tunic thin tunic of capillaries especially thick in elastic arteries e. f. contains smooth muscle and elastin has a smooth surface to decrease resistance to blood flow
2. Why are valves present in veins but not in arteries? occur in veins. Valve prevent backflow
the high blood pressure in propels blood forward, this does not
3. Name two events occurring within the body that aid in venous return. changes in thoracic cavity pressure during breathing skelete muscle "milking" action and 4. Why are the walls of arteries proportionately thicker than those of the correspondin higher pressure and fluctuations. veins are low pressure vessels arteries must withstand
211
Major Systemic Arteries and Veins of the Body
5. Use the key on the right to identify the arteries or veins described on the left. d i r o k j t c b w p q s m c y h e l a v , f , z 1. the arterial system has one of these; the venous system has two 2. these arteries supply the myocardium 3. two paired arteries serving the brain 4. longest vein in the lower limb 5. artery on the dorsum of the foot checked after leg surgery 6. serves the posterior thigh 7. supplies the diaphragm 8. formed by the union of the
R E V I E W
S H E E T
32
Print Form
Anatomy of Blood Vessels
Microscopic Structure of the Blood Vessels
1. Cross-sectional views of an artery and of a vein are shown here. Identify each; and on the lines to the sides, note the structural details that enabled you to make these identifications: artery
(vessel type)
vein
(vessel type)
open, circular lumen
(a) (a)
somewhat collapsed lu thinner media
(b)
thick media
(b)
Now describe each tunic more fully by selecting its characteristics from the key below and placing the appropriate key letters on the answer lines. e,d b a, f,c Tunica intima Tunica media Tunica externa Key: a. b. c. d. innermost tunic most superficial tunic thin tunic of capillaries especially thick in elastic arteries e. f. contains smooth muscle and elastin has a smooth surface to decrease resistance to blood flow
2. Why are valves present in veins but not in arteries? occur in veins. Valve prevent backflow
the high blood pressure in propels blood forward, this does not
3. Name two events occurring within the body that aid in venous return. changes in thoracic cavity pressure during breathing skelete muscle "milking" action and 4. Why are the walls of arteries proportionately thicker than those of the correspondin higher pressure and fluctuations. veins are low pressure vessels arteries must withstand
211
Major Systemic Arteries and Veins of the Body
5. Use the key on the right to identify the arteries or veins described on the left. d i r o k j t c b w p q s m c y h e l a v , f , z 1. the arterial system has one of these; the venous system has two 2. these arteries supply the myocardium 3. two paired arteries serving the brain 4. longest vein in the lower limb 5. artery on the dorsum of the foot checked after leg surgery 6. serves the posterior thigh 7. supplies the diaphragm 8. formed by the union of the