1) the beta cells of the pancreatic islets produce
a) insulin.
b) glucagon.
c) somatostatin.
d) cortisol.
e) peptide p.
2) a nucleotide consists of
a) a five-carbon sugar and phosphate group.
b) a five-carbon sugar and a nitrogenous base.
c) a phosphate group and a nitrogenous base.
d) a five-carbon sugar, a nitrogenous base, and a phosphate group.
e) a five-carbon sugar and an amino acid.
3) cells that are specialized for secretion
a) have a free surface that is flat.
b) have a small nucleus.
c) are usually squamous.
d) exhibit polarity.
e) are found only in the digestive system.
4) the renal veins drain into the
a) abdominal aorta.
b) renal arteries.
c) inferior vena cava.
d) segmental arteries.
e) peritubular capillaries.
5) if a person has a blood pressure of 120/90, his mean arterial pressure would be
________ mm hg.
a) 210
b) 100
c) 93
d) 105
e) 90
6) aging has what effect on the skeletal system?
a) progressive loss of processes and tuberosities
b) fusion of joints, especially syndesmoses
c) loss of calcium and collagen fibers from matrix
d) increase in the number of cranial foramina
e) increase in adipose tissue in epiphyses
7) which hormone most affects the osmolarity of blood?
a) adh
b) angiotensin ii
c) pth
d) anp
e) epinephrine
8) which of the following is not an important function of the kidney?
a) control of total body water
b) control of the electrolyte composition of the blood
c) excretion of excess albumen
d) control of production of red blood cells by bone marrow
e) regulation of blood pressure
9) which of the cranial nerves is named for the fact that it “wanders,” that is, innervates
structures throughout the thorax and abdomen?
a) viii
b) ix
c) x
d) xi
e) xii
10) a cation that often acts as a cofactor for enzymes is
a) sodium.
b) potassium.
c) calcium.
d) magnesium.
e) zinc.
11)
figure 20-2 cardiac cycle
what volume is labeled “e” on the graph?
a) cardiac output
b) stroke volume
c) end-diastolic volume
d) end-systolic volume
e) total cardiac volume
12) which organ system removes carbon dioxide from the bloodstream?
a) cardiovascular
b) lymphatic
c) respiratory
d) digestive
e) endocrine
13) deteriorating changes in the distal segment of an axon as a result of a break between
it and the soma is called ________ degeneration.
a) neural
b) central
c) peripheral
d) wallerian
e) conduction
14) inward projections of the tunica albuginea, known as septa, divide the testis into
a) seminiferous tubules.
b) straight tubules.
c) lobules.
d) rete testis.
e) the epididymis and the testis proper.
15) increased aggressive and assertive behavior is associated with an increase in which
of these hormones?
a) somatostatin
b) thyroxine
c) growth hormone
d) sex hormones
e) insulin
16) characteristics of adaptive defenses include
a) versatility.
b) tolerance.
c) memory.
d) specificity.
e) all of the answers are correct.
17) a doctor tells her nursing students that it is important to monitor patients’ blood
pressure when they are receiving verapamil (a calcium channel blocker). why?
18) how are male and female reproductive systems functionally different?
19) a(n) ________ is a rigid structure that moves on a fixed point.
20) in the condition known as erythema, the skin takes on a(n) ________ color.
21) what does it mean to say that the pancreas is both an endocrine and an exocrine
organ?
22) during exercise, the blood flow to the active skeletal muscles is increased by
autoregulation. how does this work? what other controls on blood flow operate?
23) the olfactory epithelium is sensitive to more than ________ different “primary
smells.”
24) ________ are nerves that connect to the brain. (note: be sure to capitalize the first
letter of your answer).
25) homeostatic regulation usually involves a(n) ________ that detects a particular
stimulus, and a(n) ________ that responds to the stimulus by communicating with a(n)
________ whose activity has an effect on the same stimulus.