Biology 2060 - Anatomy and Physiology II » Summer 2020 » Lecture Exam 2
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Question #1
Blood hydrostatic pressure in systemic capillaries is greater than interstitial fluid hydrostatic pressure.
A.
FALSE
B.
TRUE
Question #2
Subclavian trunks drain lymph from the
A.
deep thoracic structures.
B.
head and neck.
C.
upper limbs, breasts, and superficial thorax.
D.
abdominopelvic wall.
Question #3
Nonspecific immunity is another name for
A.
innate immunity.
B.
adaptive immunity.
C.
cell-mediated immunity.
D.
acquired immunity.
Question #4
In general, as an artery's diameter decreases, the artery walls show
A.
a decrease in both smooth muscle and elastic fibers and an increase in areolar connective tissue.
B.
an increase in the relative amount of smooth muscle and a decrease in the relative amount of elastic fibers.
C.
a decrease in the relative amount of smooth muscle and an increase in the relative amount of elastic fibers.
D.
an increase in relative amounts of smooth muscle and elastic fibers and a decrease in endothelium.
Question #5
Which part of a thymic lobule contains mature lymphocytes?
A.
Medulla
B.
Capsule
C.
Cortex
D.
Trabecula
Question #6
If someone were to have abnormally low levels of protein in their blood, then net filtration pressure would
A.
be higher than normal.
B.
be lower than normal.
Question #7
Which of the following does not contain red marrow?
A.
Ribs
B.
Flat bones of the skull
C.
Sternum
D.
Long bones of digits
E.
Vertebrae
Question #8
Lymph contains protein
A.
FALSE
B.
TRUE
Question #9
A network of small arteries called the ________ provides a blood supply to the tunica externa of very large vessels.
A.
distributing arteries
B.
thoroughfare channels
C.
vasa vasorum
D.
companion vessels
E.
fenestrated arteries
Question #10
Valves in veins
A.
are found only in the largest veins.
B.
cause venous blood flow to go in only one direction.
C.
are the leading cause of high blood pressure.
D.
make the use of a skeletal muscle pump unnecessary for venous blood flow.
E.
are formed of the tunica media.
Question #11
Inflammation is a(n)
A.
antigen-specific process that occurs in avascular tissue.
B.
nonspecific process that occurs in vascularized tissue.
C.
nonspecific process that occurs in avascular tissue.
D.
antigen-specific process that occurs in vascularized tissue.
Question #12
Which fluid does lymph most closely resemble
A.
Blood plasma
B.
Intracellular fluid
C.
Whole blood
D.
Interstitial fluid
Question #13
Which are found in the capillary wall? a: Endothelium b: Subendothelial layer c: Internal elastic lamina d: Intercellular clefts e: External elastic lamina f: Basement membrane
A.
b, d, e, f
B.
a, c, d, e, f
C.
a, d, f
D.
a, b, d, e, f
E.
a, b, d, f
Question #14
Sinusoids are found in a: bone marrow b: spleen c: small intestine d: kidney e: liver f: muscle g: skin
A.
b, c, e, f
B.
b, c, d, g
C.
c, d
D.
a, b, e
E.
f, g
Question #15
Which statement accurately compares filtration and reabsorption?
A.
Filtration involves bulk flow of fluid out of the blood, whereas reabsorption is bulk flow back into the blood.
B.
Filtration happens at the venule end of a capillary bed and reabsorption happens in feeder arterioles.
C.
Filtration is driven by concentration gradients, whereas reabsorption depends on hydrostatic pressure.
D.
The direction of filtration can be either into or out of the blood, but reabsorption always involves fluids entering the blood.
Question #16
Where do T-lymphocytes mature?
A.
Thymus gland
B.
Thyroid gland
C.
White bone marrow
D.
Spleen
E.
Tonsils
Question #17
Precapillary sphincters will
A.
control blood flow into the true capillaries.
B.
cause blood to flow directly from the metarteriole into the postcapillary venule.
C.
All of the answers are correct.
D.
close when the tissue's needs have been met.
E.
open when the tissue needs nutrients.
Question #18
The force per unit area that blood places on the inside wall of a blood vessel
A.
is greater during diastole.
B.
is called the blood pressure.
C.
is greater in the inferior vena cava than in the common iliac vein.
D.
increases the further the vessel is from the heart.
E.
is called the pulse.
Question #19
When women with breast cancer undergo surgery to remove the tumor or the entire breast, the axillary lymph nodes are often removed as well. Why?
A.
In removing the breast, the blood supply to the nodes is removed and they will inevitably cease to function.
B.
The axillary lymph nodes receive lymph from the breast and may contain cancer cells.
C.
The nerves that supply the axillary lymph nodes are often cut during the breast surgery.
D.
It is impossible to remove the breast without physically damaging the lymph nodes.
E.
With the removal of the breast, there is no further need for lymph drainage and filtering in that part of the body.
Question #20
Which of the artery types contain the internal and external elastic laminae?
A.
Muscular arteries
B.
Elastic arteries
C.
Arterioles
D.
Elastic arteries and arterioles
E.
Elastic and muscular arteries
Question #21
Chemotaxis is the process by which
A.
CAMs on leukocytes adhere to CAMs on endothelial cells of capillaries within injured tissues.
B.
chemical messengers are secreted that stimulate the sensation of pain that accompanies inflammation.
C.
cells migrate along chemical gradients.
D.
cells exit the blood by squeezing out between cells in the blood vessel wall.
Question #22
A lymphatic capillary that picks up dietary lipids in the small intestine is called a(n)
A.
trabeculum.
B.
cisterna chyli.
C.
efferent lymphatic vessel.
D.
lacteal.
E.
afferent lymphatic vessel.
Question #23
Which is not correct regarding the spleen?
A.
It has an outer cortex and inner medulla.
B.
It is divided into sections by capsular extensions called trabeculae.
C.
Its blood is supplied by the splenic artery and drained by the splenic vein.
D.
Its white pulp contains T-lymphocytes, B-lymphocytes, and macrophages.
Question #24
Dendritic cells of the skin are derived from
A.
monocytes.
B.
neutrophils.
C.
B-lymphocytes.
D.
T-lymphocytes.
E.
macrophages.
Question #25
Which statement is accurate?
A.
Filtration dominates at the arterial end of a capillary bed, and is driven by hydrostatic pressure.
B.
Filtration dominates at the venous end of a capillary bed, and is driven by hydrostatic pressure.
C.
Filtration dominates at the arterial end of a capillary bed, and is driven by osmotic pressure.
D.
Filtration dominates at the venous end of a capillary bed, and is driven by osmotic pressure.
Question #26
The ________ is composed of circularly arranged layers of smooth muscle cells.
A.
tunica media
B.
tunica intima
C.
None of the answers is correct.
D.
tunica interna
E.
tunica externa
Question #27
Atherosclerosis involves a
A.
sustained increase in blood flow that leads to decreases in venous resistance to keep blood pressure constant.
B.
sustained increase in blood pressure that leads to compensatory vasodilation.
C.
sustained decrease in blood flow that leads to increases in arterial diameter to lower resistance and raise pressure.
D.
sustained increase in resistance that leads to increases in arterial pressure to maintain adequate blood flow.
E.
sustained decrease in resistance that leads to decreases in arterial pressure to maintain adequate blood flow.
Question #28
If someone's blood pressure were listed as 125/75 mmHg, then their pulse pressure would be
A.
125 mmHg.
B.
40 mmHg.
C.
100 mmHg.
D.
5/3.
E.
50 mmHg.
Question #29
As blood moves from the arterial end to the venous end of a capillary, net filtration pressure
A.
decreases, as blood hydrostatic pressure decreases.
B.
decreases, as blood colloid osmotic pressure decreases.
C.
remains the same, as rises in blood osmotic pressure are offset by declines in tissue osmotic pressure.
D.
increases, as blood colloid osmotic pressure rises.
E.
increases, as blood hydrostatic pressure rises.
Question #30
The thymus contains ________ lobes and is located ________.
A.
4; in the mediastinum
B.
2; in the mediastinum
C.
4; anterior to the laryngeal prominence (Adam's apple)
D.
2; anterior to the laryngeal prominence (Adam's apple)
Question #31
Which type of cell attacks a variety of unwanted cells and causes those cells to undergo apoptosis?
A.
Natural killer cells
B.
Basophils
C.
Neutrophils
D.
Macrophages
E.
Eosinophils
Question #32
Blood colloid osmotic pressure is largely due to
A.
the high amount of water in the blood, and it promotes filtration from arterioles.
B.
the proteins in the blood, and it promotes reabsorption.
C.
the pressure generated by the heart, and it favors osmosis into the arteriole end of the capillary bed.
D.
the high amount of water in the blood, and it promotes diffusion out of the capillaries.
E.
the proteins in the blood, and it promotes filtration.
Question #33
Which is not correct regarding the white pulp of the spleen?
A.
It serves as a blood reservoir.
B.
It contains a central artery.
C.
Its cells include T-lymphocytes, B-lymphocytes, and macrophages.
D.
Its cells are arranged in clusters that are circular in shape.
Question #34
Gas, nutrient, and waste exchange occur between the ________ and the tissues of the body.
A.
veins
B.
arteries
C.
capillaries
D.
capillaries and veins
E.
capillaries and arteries
Question #35
Circulation to the spleen demonstrates a(n)
A.
simple pathway, as one artery delivers blood and one vein drains the organ.
B.
anastomosis, as its two capillary beds are separated by a portal vein.
C.
anastomosis, as one artery delivers blood and one vein drains the organ.
D.
simple pathway, as its two capillary beds are separated by a portal vein.
Question #36
Defensins and lysosomes are both part of ________ immunity and function as ________.
A.
innate; attackers of pathogenic cells
B.
adaptive; attackers of pathogenic cells
C.
innate; physical barriers to pathogen entry
D.
adaptive; physical barriers to pathogen entry
Question #37
Often a virus-infected cell will release ________ to prevent spread of the infection.
A.
perforin
B.
histamine
C.
complement
D.
interferon
E.
serotonin
Question #38
The function of the postcapillary venule is to
A.
allow for diffusion of metabolic wastes from the tissues.
B.
drain the capillary bed.
C.
allow for diffusion of nutrients to the tissues.
D.
supply metarteriole with blood.
E.
allow for diffusion of nutrients and metabolic wastes.
Question #39
Increased cardiac output ________ the blood pressure.
A.
will not affect
B.
increases
C.
decreases
Question #40
The force that drives fluid into lymphatic capillaries is
A.
diffusion of both water and solutes.
B.
hydrostatic pressure.
C.
endocytosis.
D.
osmosis.
E.
exocytosis.
Question #41
A portal system
A.
is one in which blood flows through two capillary beds before being sent back to the heart.
B.
is one in which multiple arteries converge on one organ or body region.
C.
is one in which circulation to a large organ involves only one artery and one main (portal) vein.
D.
includes a functional end artery that makes an arterial anastomosis.
E.
is a simple circulatory system with an arteriovenous anastomosis.
Question #42
Atrial natriuretic peptide stimulates
A.
vasoconstriction, decreased urine output, and therefore decreased blood pressure.
B.
vasodilation, increased urine output, and therefore decreased blood pressure.
C.
vasodilation, decreased urine output, and therefore increased blood pressure.
D.
vasoconstriction, increased urine output, and therefore increased blood pressure.
E.
vasoconstriction, sodium retention, and therefore increased blood pressure.
Question #43
Which cells resemble basophils and are found in connective tissue, close to small blood vessels?
A.
Mast cells
B.
Cytokines
C.
NK cells
D.
Alveolar macrophages
E.
Dendritic cells
Question #44
In addition to creating a physical barrier to pathogen entry, mucus contains antimicrobial substances such as IgA.
A.
TRUE
B.
FALSE
Question #45
The main function of tonsils is to detect and protect against infections agents that are
A.
in the blood.
B.
ingested or inhaled.
C.
in the lymph.
D.
secreted by salivary glands.
Question #46
Aldosterone and atrial natriuretic peptide have ________ effects on blood pressure.
A.
similar
B.
opposite
Question #47
Lymphatic nodules consist of
A.
lymphatic cells, extracellular matrix, and an incomplete connective tissue capsule.
B.
crypts, trabeculae, and Reed-Sternberg cells.
C.
afferent vessels, efferent vessels, a cortex, and medulla.
D.
a hilum that is located intermediate to two lobules.
E.
central arteries and monocytes.
Question #48
When physical exertion has ended and the body is at rest, veins demonstrate
A.
vasodilation so that blood is shifted toward the rest of the circulatory system.
B.
vasodilation so that they function as blood reservoirs.
C.
vasoconstriction so that they function as blood reservoirs.
D.
vasoconstriction so that blood is shifted toward the rest of the circulatory system.
Question #49
As an arterial pathway moves farther from the heart, the arteries
A.
get smaller.
B.
get larger.
C.
show no change in their lumen size.
Question #50
Concerning the exchange between blood and interstitial fluid at systemic capillaries,
A.
more fluid is filtered than reabsorbed.
B.
the fluid reabsorbed into the capillary exactly matches the amount filtered by the capillary.
C.
more fluid is absorbed and reabsorbed than is filtered.
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