All of the following changes are commonly observed in the cardiovascular system in response to aging EXCEPT
a) decreased cardiac output.
b) increased compliance of the aorta.
c) loss of cardiac muscle strength.
d) decline in maximum heart rate.
e) increased systolic blood pressure.
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Question 2) Which of the following is an effect of stress on the immune system?
a) Increased activity of T lymphocytes
b) Increased activity of B lymphocytes
c) Activation of the immune system
d) Inhibition of the immune system
e) Increased production of antibodies
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Question 3) Name the layer labeled E
a) Submucosa
b) Serosa
c) Longitudinal muscle
d) Mucosa
e) Circular muscle
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Question 4) Which structure in the figure is filled with follicular fluid?
a) H
b) G
c) E
d) D
e) B
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Question 5) Which vessel in the diagram is the interlobular artery?
a) D
b) E
c) F
d) L
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Question 6) A corrective cardiac procedure in which a large piece of a patient's own latissimus dorsi muscle is wrapped around the heart and stimulated by an implanted pacemaker to assist the pumping action of a damaged heart.
a) myocardial infarction
b) tetrology of Fallot
c) cardiomyopathy
d) cardiomegaly
e) cardiomyoplasty
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Question 7) Which of the following is NOT an effect of aging on the immune system?
a) Increased susceptibility to infections
b) Increased susceptibility to malignancies
c) Decreased response to vaccines
d) Increased response of T cells to antigens
e) Decreased production of antibodies
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Question 8) Name the layer labeled C
a) Submucosa
b) Serosa
c) Longitudinal muscle
d) Mucosa
e) Circular muscle
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Question 9) The cell labeled H in the figure secretes which of the following hormones?
a) renin
b) progesterone
c) aldosterone
d) estrogen
e) testosterone
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Question 10) Which cell is considered to be the most important cell in the immune system?
a) Cytotoxic T Cells
b) B lymphocytes
c) T Helper cells
d) Eosinophils
e) macrophages
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