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1) match the term with its description:
a. threshold
b. effector
c. integrating center
d. setpoint
e. sensory receptor
the desired target value for a parameter
2) during the fasting state, the energy stores of the ________ become the major source
of glucose for the whole body.
a) brain
b) liver
c) muscles
d) pancreas
e) adipose tissues
3) premature closure of the epiphyseal plates could be caused by
a) high levels of vitamin d3.
b) too much calcium in the diet.
c) elevated levels of sex hormones.
d) too little thyroxine.
e) an excess of growth hormone.
4) match the ploidy with a cell stage.
a. haploid
b. diploid
germ cell
5) match the part of the neuron to its description (answers may be used more than
once).
a. dendrites
b. axon
c. cell body
where most graded potentials originate
6) ________ are pacemakers for slow wave activity.
a) interstitial cells of cajal
b) intrinsic neuron cells
c) extrinsic neuron cells
d) g cells
e) chief cells
7) the ________ of the sperm contains microtubules and mitochondria.
8) the motor activity of the muscularis externa is controlled by the
a) submucosal plexus.
b) myenteric plexus.
c) migrating motor complex.
d) extrinsic neurons.
e) motilin.
9) the brain has a ________ (high or low?) demand for oxygen, and receives about
________% of the total blood volume in circulation.
a) high; 35
b) low; 35
c) low; 15
d) high; 15
e) high; 50
10) both insulin and glucagon are peptide hormones that target liver cells. the response
of the target cells to each of these two hormones is opposite. this information implies
that
a) the two hormones bind to different cell surface receptors.
b) one hormone binds to a receptor on the cell membrane and the other to an
intracellular receptor.
c) each of the two hormones uses a different second messenger.
d) both hormones interact with receptors at the cell nucleus.
e) the two hormones bind to different receptors and use a different second messenger.
11) which of the following statements is not correct regarding the motor units and their
activation?
a) a motor unit in muscles of gross movement can have thousands of muscle cells.
b) all muscle fibers in a single motor unit are of the same fiber type.
c) a weak contractile stimulus activates fast-twitch motor units.
d) the metabolic capacity of muscle fibers within a motor unit can be altered.
e) at its peak intensity, a contractile stimulus will activate muscle fibers that are easily
fatigued.
12) our perception of the pull of gravity and linear acceleration is the result of
a) changes in the pressure exerted by the cupula on hair cells.
b) vibrations of the tectorial membrane striking hair cells.
c) the pressure exerted by the otolithic organ on hair cells of the maculae.
d) the movement of the otolithic organ within the ampullae of the semicircular canals.
13) during the cardiac cycle,
a) the p wave of the ecg occurs between the first and second heart sounds.
b) the qrs complex of the ecg precedes the increase in ventricular pressure.
c) the third heart sound occurs during atrial systole.
d) the second heart sound coincides with the qrs complex of the ecg.
e) the greatest increase in ventricular pressure occurs during the ejection phase.
14) match the specific enzyme to its class.
a. oxidoreductase
b. hydrolase
c. transferase
d. ligase
e. lyase
aminase
15) atoms in a covalent molecule
a) share electrons in single pairs.
b) share electrons in double pairs.
c) share electrons in triple pairs.
d) share electrons singly, never in pairs.
e) can share electrons in single pairs, double pairs, or triple pairs.
16) tom's father suffers a stroke that leaves him partially paralyzed on his right side.
what type of glial cell would you expect to find in increased numbers in the damaged
area of the brain that is affected by the stroke?
a) astrocytes
b) schwann cells
c) oligodendrocytes
d) microglia
17) a ________ is a problem with one of the tissues producing trophic hormones.
18) ________ secretions are discharged onto an epithelial surface.
19) explain the roles that the ampa and nmda receptors play in long-term potentiation.
20) draw a concept map illustrating the immune response to bacterial infection.
21) evaluate the validity of this statement: "the extracellular and intracellular fluid
compartments have a stable solute composition that is in equilibrium."
22) a dead human body has been discovered in the woods near your home. no, you are
not a homicide suspect; rather you are an expert hematologist, and the body is still
warm. implausibly, this adult corpse has no gender cues (no sexual organs, and skeletal
features that are in between those expected for males or females). how can you assist
the detectives in determining the gender of this person, using the hematology lab in
your garage?
23) during exercise, skeletal muscle receives approximately ________% of blood flow.
where is this blood redistributed from?
