1) microfilaments
a) are usually composed of myosin.
b) are hollow, filamentous structures.
c) anchor the cytoskeleton to integral proteins of the cell membrane.
d) interact with filaments composed of tubulin to produce muscle contractions.
e) are found in the cytoplasm radiating away from the centrosome.
2) during the alarm phase of the general adaptation syndrome (gas) there is
a) decreased blood flow to skeletal muscles and skin.
b) decreased mental alertness.
c) mobilization of energy reserves.
d) increased urine release.
e) decreased rate of respiration.
3) the general interpretive area
a) is the speech center of the brain.
b) is responsible for predicting future consequences.
c) is the site of long-term memory storage.
d) allows us to interpret what is read or heard.
e) may be damaged by even a small stroke.
4) ganglionic neurons innervate such things as
a) smooth muscle.
b) cardiac muscle.
c) adipose tissue.
d) glands.
e) all of the answers are correct.
5) destruction of the supraoptic nucleus of the hypothalamus would have which result?
a) loss of adh secretion
b) loss of gh secretion
c) loss of melatonin secretion
d) loss of emotional response
e) loss of loss of regulatory factor secretion
6) total peripheral resistance is related to all of the following, except the
a) length of a blood vessel.
b) osmolarity of interstitial fluids.
c) turbulence.
d) blood viscosity.
e) blood vessel diameter.
7) a solution containing equal numbers of hydrogen ions and hydroxide ions is
a) acidic.
b) basic.
c) neutral.
d) alkaline.
e) in equilibrium.
8) each of the following statements concerning mitochondria is true, except one.
identify the exception.
a) the cristae increase the inner surface area of the organelle.
b) the matrix contains metabolic enzymes involved in energy production.
c) respiratory enzymes are attached to the surface of the cristae.
d) the mitochondria require carbon dioxide and produce oxygen in the process of
energy production.
e) the mitochondria produce most of a cell’s atp.
9) in the anatomical position, the ulna is located ________ to the radius.
a) distal
b) proximal
c) medial
d) superior
e) lateral
10) ryan hears a loud noise and quickly turns his eyes sideways in the direction of the
sound. to accomplish this action he must use his ________ muscles.
a) superior rectus
b) lateral rectus
c) inferior rectus
d) medial rectus
e) lateral and medial rectus
11) cardiac output can be increased by all of the following except one. choose the
exception.
a) decreasing ejection fraction
b) decreasing end systolic volume
c) increasing stroke volume
d) increasing ejection fraction
e) increasing heart rate
12) if the dorsal root of a spinal nerve is severed,
a) output to skeletal muscles would be blocked.
b) output to visceral organs would be blocked.
c) the spinal cord would not be able to process information at that level.
d) the brain would not be able to communicate with that level of the spinal cord.
e) sensory input would be blocked.
13) the movement of oxygen from an area of high concentration to an area of low
concentration is an example of
a) osmosis.
b) active transport.
c) diffusion.
d) facilitated transport.
e) filtration.
14) which of the following is not involved in creating the resting potential of a neuron?
a) diffusion of potassium ions out of the cell
b) diffusion of sodium ions into the cell
c) membrane permeability for sodium ions greater than potassium ions
d) membrane permeability for potassium ions greater than sodium ions
e) the interior of the plasma membrane has an excess of negative charges.
15) the basic functional unit of the nervous system is the ________.
16) the ________ ligament extends from the uterus, near the attachment of the uterine
tube, to the medial surface of the ovary.
17) eating disorders are common among girls and young women. they result from a
psychological problem that causes inadequate or excessive food consumption. two
major eating disorders are anorexia nervosa and ________.
18) the shoulder joint, or ________ joint, permits the greatest range of motion of any
joint.
19) the muscle that retracts and elevates the upper lip is the ________ muscle.
20) stem cells located between the endomysium and sarcolemma that function in the
repair of damaged muscle tissue are called ________.