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Chapter 19: Blood Vessels Flashcards | StudBud
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Chapter 19: Blood Vessels
Chapter 19: Blood Vessels
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The Human Body in Health and Illness, 7th Edition
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Questions
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Answers
1
Which of the following is the correct sequence of layers in the vessel wall from superficial too deep?
tunica intima, tunica externa, tunica media
tunica externa, tunica media, tunica intima
tunica intima, tunica media, tunica externa
tunica media, tunica intima, tunica externa
2
The vessel layer that has a direct role in vasoconstriction is the ___.
tunica externa
tunica media
endothelium
tunica intima
3
Which of the following acts on the kidneys and blood vessels to raise blood pressure?
epinephrine
angiotensin II
atrial natriuretic peptide
antidiuretic hormone
4
Loss of vasomotor tone that results in a huge drop in peripheral resistance known as ___.
vasoconstriction
vascular shock
atherosclerosis
hypertension
5
If the net filtration pressure (NFP) is positive, the fluid is reabsorped into the blood.
False
True
6
During systematic circulation, blood leaves the ___.
right atrium and flows directly to the lungs
right ventricle and flows directly to the lungs
left ventricle and flows directly to the aorta
lungs and flows directly to the left atrium
7
Which if the following veins is the longest in the body?
superior vena cava
hepatic portal vein
great saphenous vein
femoral vein
8
Diastolic pressure is the peak of aortic pressure.
True
False
9
Blood flows directly from ___ into capillary beds.
arterioles
muscular arteries
elastic arteries
venules
10
Which of the layers of an artery wall is regulated by the sympathetic nervous system and many hormones?
subendothelial layer
tunica externa
tunica intima
tunica media
11
The inferior vena cava brings blood from the lower regions of the body and empties into the ___.
right ventricle
left ventricle
aorta
right atrium
12
The major long-term mechanism of blood pressure control is provided by the ___.
digestive control
paravertebral ganglia
kidneys
heart
13
Which of the following regulates blood flow at the entrance to each true capillary?
precapillary sphincter
tunica externa
valves
lymph nodes
14
Which of the following blood vessels is the most susceptible to atherosclerosis?
pulmonary arteries
aorta
femoral artery
cerebral arteries
15
Blood flow would be
increased
by ___.
increasing cardiac output
decreasing blood pressure
decreasing vessel diameter
increasing blood vessel length
16
Which of the following would experience increased blood flow during exercise?
skin
intestines
kidneys
brain
17
Exchange of gases and nutrients occurs by diffusion between the ___.
arterioles and tissue cells
capillaries and tissue cells
arterioles and venules
arteries and veins
18
The only vessels that provide direct access to nearly every cell in the body are the ___.
veins
capillaries
arteries
arterioles
19
The flow of blood from the left ventricle to the right atrium is called the ___.
hepatoportal circulation
pulmonary circulation
microcirculation
systemic circulation
20
Mean arterial pressure propels blood through the tissues.
False
True
21
Which of the following is true when comparing arteries and veins?
arteries carry blood away from the heart; veins carry blood to the heart
at any given time, there is more blood present in arteries than in veins
arteries are less muscular than veins
arteries have valves; veins do not
22
At the arteriolar end of a capillary, ___ pushes fluid into the capillary.
hydrostatic pressure in the interstitial fluid
osmotic pressure in the interstitial fluid
hydrostatic pressure in the capillary
osmotic pressure in the capillary
23
Baroreceptors are effective in long-term regulation of blood pressure.
True
False
24
The hepatic portal system collects blood from the ___ and then routes it to the ___.
GI tract; liver
liver; GI tract
kidneys; liver
liver; kidneys
25
Hypertension is defined physiologically as a condition of sustained arterial pressure of ___ or higher.
130/90
130/80
140/90
120/80
26
Most neural controls of blood pressure involve input from baroreceptors, which are sensitive to ___.
constriction of capillary beds
the levels of carbon dioxide in the blood
the level of oxygen in the blood
changes in blood pressure
27
___ inhibits fibrinolysis by competing with plasminogen and may contribute to the formation of atherosclerotic plaques.
cholesterol
cytomegalovirus
lipoprotein (a)
foamy macrophages
28
Any condition in which blood vessels are inadequately filled and blood CANNOT circulate normally is called ___.
varicose veins
circulatory shock
hypertension
atherosclerosis
29
Which of the abdominal arteries branches to form the common hepatic artery, left gastric artery, and splenic artery?
celiac trunk
superior mesenteric artery
inferior mesenteric artery
descending aorta
30
Sympathetic impulses are the nervous system control of blood flow.
True
False
31
During pulmonary circulation, blood leaves the ___.
right atrium and flows directly to the lungs
left ventricle and flows directly to the lungs
right ventricle and flows directly to the lungs
right atrium and flows directly to the left ventricle
32
Cardiogenic shock is most likely to result from ___.
multiple heart attacks
large-scale blood loss
a systematic allergic reaction
a severe bacterial infection
33
Which of the following conditions would NOT increase the chances of developing varicose veins?
running in place
a potbelly in an obese person
standing to attention for long periods of time
pregnancy
34
Blood from the brain is returned to the heart via the ___.
inferior vena cava
thoracic aorta
abdominal aorta
superior vena cava
35
Blood services the myocardium of the heart by coronary vessels that originate from the ___.
pulmonary artery
pulmonary veins
inside of the veins
aorta
36
Angiotensin II has a hormonal control of blood flow.
False
True
37
Which of the following types of blood vessels have the proportionally thickest tunica media of all vessels?
muscular arteries
elastic arteries
vasa vasorum
arterioles
38
The vessels that exhibit the lowest level of permeability are the ___.
fenestrated capillaries
continuous capillaries
capillaries found in the glomerulus of the kidney
sinusoid capillaries
39
A metarteriole is a vessel that ___.
is intermediate between the arteriole and the capillary bed
returns interstitial fluid to the circulation
drains the capillary bed
is intermediate between a capillary and a venule
40
An elastic lamina on both sides of the tunica media is a characteristic of ___.
muscular arteries
elastic arteries
all arteries
conducting arteries
41
Nitric oxide has a myogenic control of blood flow.
False
True
42
When would the capillary beds surrounding the gastrointestinal organs be open?
between meals
during exercise
while sleeping
when digesting a meal
43
Changes in peripheral resistance are primarily driven by ___.
tunica intima thickness
blood vessel length
blood viscosity
blood vessel diameter
44
The minute-to-minute blood flow through the capillary beds is determined by the ___.
constriction of elastic arteries
number of elastic fibers in conducting arteries
diameter of arterioles
elastic lamina on both sides of the tunica media in muscular arteries
45
Which of the following is the major force generating blood flow?
the pumping action of the heart
blood viscosity
peripheral resistance
blood vessel diameter
46
Systolic pressure is the lowest level of aortic pressure
True
False
47
The endothelium is composed of ___.
simple squamous epithelium
tunica media smooth muscle cells
simple columnar epithelium
stratified squamous epithelium
48
Pulse pressure is the difference between systolic and diastolic pressure.
True
False
49
Stretch of vascular smooth muscle uses metabolic control of blood flow.
False
True
50
Blood flows from the lungs to the ___ via the ___.
right atrium; pulmonary arteries
right atrium; pulmonary veins
left atrium; pulmonary veins
left atrium; pulmonary arteries
51
Up to 65% of the body's blood supply is found in ___.
arterioles
capillaries
veins
arteries
52
The presence of ___ stabilizes the wall of capillaries.
valves
elastic fibers valves
gap junctions
pericytes
53
Reduction in the lumen diameter of a blood vessel as the smooth muscle contracts is known as ___.
arteriosclerosis
atherosclerosis
vasodilation
vasoconstriction
54
Fluids are likely to leave or filter out of the capillary if ___.
net filtration pressure (NFP) is negative
net hydrostatic pressure (HP) is less than net osmotic pressure (OP)
net hydrostatic pressure (HP) is greater than net osmotic pressure (OP)
osmotic pressure in the capillary is high