1) synovial fluid is rich in albumin and hyaluronic acid, which give it a viscous texture
similar to egg white.
2) erectile dysfunction prevents ejaculation in most cases.
3) in the plasma membrane, glycolipids and glycoproteins face toward the cytoplasm,
while peripheral proteins always face toward the ecf.
4) most memory b cells are found circulating in the lymph.
5) the absorptive state is regulated mainly by insulin, whereas the postabsorptive state is
regulated by multiple hormones.
6) the mechanism that keeps the testes cooler than the body’s core temperature is called
descent of the testes.
7) olfaction results from the stimulation of chemoreceptors.
8) the radial artery is lateral to the ulnar artery.
9) a new drug apparently increases short-term memory. students were divided randomly
into two groups at the beginning of the semester. one group was given the memory pill
once a day for the semester, and the other group was given a same-looking pill, but it
was just sugar. the sugar pill is termed a(n) __________.
a. controlled pill
b. placebo
c. treatment pill
d. variable
e. effective dose
10) the area where themajor vessels lead to and from the heart’s chambers is calledthe
__________ of the heart. the pointy, inferior portion is called the ___________.
a.apex; base
b.atrium; ventricle
c.ventricle; atrium
d.base; apex
e.endocardium; epicardium
11) which stage of meiosis is an ovulated egg in?
a. prophase i
b. metaphase i
c. telophase i
d. prophase ii
e. metaphase ii
12) athletes who train at high altitudes increase their red blood cell count, which
increases their oxygen supply during exercise. increased oxygen supply results in
__________.
a. increased glycolysis
b. increased use of myokinase
c. longer aerobic respiration
d. longer anaerobic fermentation
e. reduced atp consumption
13) a change in the genetic composition of a population over time is called
__________.
a. mutation
b. natural selection
c. selection pressure
d. evolution
e. adaptation
14) which of the following is not true regarding sickle-cell disease?
a. it is caused by a recessive allele that modifies the structure of hemoglobin.
b. it is due to a hereditary hemoglobin defect.
c. it is advantageous in that it canprotect carriers against malaria.
d. it is a cause of malaria.
e. it is a cause of anemia.
15) the first step in using amino acids as fuel is to __________ them.
a. digest
b. deaminate
c. transaminate
d. aminate
e. synthesize
16) a hepatic triad consists of __________.
a. the right, left, and common hepatic ducts
b. the common hepatic duct, cystic duct, and bile duct
c. the hepatic portal vein and two hepatic ducts
d. a bile ductule, a branch of the hepatic artery, and a branch of the hepatic portal vein
e. a central vein, a hepatic lobule, and a hepatic sinusoid
17) in an action potential, which event directly follows repolarization?
a. threshold is reached
b. hyperpolarization of the membrane
c. depolarization of the membrane
d. hypopolarization of the membrane
e. the resting membrane potential is reinstated
18) __________ nerve(s) pass(es) throughout sympathetic ganglia without synapsing.
a. facial
b. trigeminal
c. vagus
d. celiac
e. splanchnic
19) the liver performs all of the following functions except __________.
a.converting ammonia to urea
b.carrying out most beta oxidation
c.producing insulin and glucagon
d.synthesizing cholesterol
e.synthesizing glucose from fats and amino acids
20) glycosaminoglycans (gags) help give the ground substance some of its qualities,
including _________.
a. helping to transfer charges in the nervous system
b. holding water and maintaining electrolyte balance
c. giving bone its brittle, inorganic structure
d. providing the major structural support of tendons and ligaments
e. acting as an energy reserve for muscle contraction
21) the coxal joint is a ball-and-socket joint, in whichthe head of the humerus
articulates with the glenoid cavity of the scapula.
22) cardiac muscle has very little capacity for regeneration because it lacks
__________.
a. satellite cells
b. an endomysium
c. sarcomeres
d. dense bodies
e. somatic nerve fibers