1) damage to the pectoralis major would interfere with a person’s ability to
a) extend the forearm.
b) abduct the humerus.
c) adduct the humerus.
d) elevate the scapula.
e) rotate the elbow.
2) if the sodium-potassium pumps in the plasma membrane fail to function, all of the
following occur, except
a) the intracellular concentration of potassium ions will increase.
b) the neuron will slowly depolarize.
c) the membrane will slowly lose its capacity to generate action potentials.
d) the inside of the membrane will have a resting potential that is more positive than
normal.
e) the intracellular concentration of sodium ions will increase.
3) the clavicle articulates with the scapula
a) distally with the coracoid process.
b) distally with the glenoid cavity.
c) distally with the acromion.
d) distally with the manubrium.
e) proximally with the coracoid cavity.
4) in rigor mortis
a) the myosin heads are attached to actin.
b) atp is depleted.
c) muscles are inextensible.
d) cross-bridge cycling is absent.
e) all of the answers are correct.
5) stimulation of the reticular formation results in
a) increased consciousness.
b) sleep.
c) coma.
d) decreased cerebral function.
e) coughing.
6) the skeletal muscle complex known as the triad consists of
a) actin, myosin, and filaments.
b) a transverse tubule and two terminal cisternae.
c) filaments, myofibrils, and sarcomeres.
d) a bands, h bands, and i bands.
e) actin, myosin, and sarcomeres.
7) the ridge of oral mucosa that surrounds the base of a tooth is the
a) vestibule.
b) gingiva.
c) alveolus.
d) uvula.
e) faux.
8) the calvaria (or skullcap) is formed by the ________ bones.
a) frontal, temporal, and parietal
b) frontal, parietal, and occipital
c) temporal, parietal, and occipital
d) frontal, temporal, and occipital
e) frontal, temporal, parietal, and occipital
9) fast muscle fibers can adapt to aerobic metabolism by generating more mitochondria
in response to
a) repeated, exhaustive stimulation.
b) sustained low levels of muscle activity.
c) high amounts of oxygen.
d) increased levels of testosterone.
e) prolonged periods of inactivity.
10) the cerebellum adjusts motor activity in response to all of the following, except
a) touch sensations.
b) visual information.
c) equilibrium-related sensations.
d) input from the motor cortex.
e) input from proprioceptors.
11) the anterior nuclei of the thalamus
a) are part of the limbic system.
b) secrete pituitary hormones.
c) secrete melatonin.
d) receive axon collaterals from the optic nerve.
e) secrete pituitary hormones and melatonin.
12) ________ are receptors in the aorta that monitor the blood pressure.
a) chemoreceptors
b) nociceptors
c) baroreceptors
d) proprioceptors
e) hair cells
13) all of the following are true of olfactory pathways, except
a) they project first to the mamillary bodies and then to the thalamus.
b) primary afferents synapse in the olfactory bulb.
c) information flows to the olfactory cortex, hypothalamus, and limbic system.
d) they are the only sensory pathways to reach the forebrain without first synapsing in
the thalamus.
e) they exhibit a considerable amount of convergence.
14) the site of intercellular communication between a neuron and another cell is the
a) telodendria.
b) synaptic terminals.
c) collateral.
d) hillock.
e) synapse.
15) a dust particle floating on a water surface illustrates
a) surface tension.
b) chemical tension.
c) static electricity.
d) heat capacity.
e) hydrophilic attraction.
16) characteristics of the epidermis include:
a) multilayered
b) flexible
c) contains desmosomes
d) serves as uv radiation protection
e) all of the answers are correct.
17)
figure 7-2 typical vertebra (inferior view)
identify the structure labeled “3”
a) lateral process
b) spinous process
c) lamina
d) transverse process
e) pedicle
18) the spinal tract that normally plays a minor role in the subconscious regulation of
the distal muscles of the arms is the ________ tract.
a) lateral corticospinal
b) anterior corticospinal
c) rubrospinal
d) reticulospinal
e) vestibulospinal
19) a receptor that contains many mechanically-gated ion channels would function best
as a
a) tactile receptor.
b) chemoreceptor.
c) nociceptor.
d) thermoreceptor.
e) light receptor.
20) the action potential is conducted into a skeletal muscle fiber by
a) motor end plates.
b) neuromuscular junctions.
c) transverse tubules.
d) triads.
e) sarcoplasmic reticulum.
21) the hepatic portal vein forms from the fusion of the superior and inferior ________
and the splenic veins.
22) the white structure that connects the cerebral hemispheres is the ________.
23) uterine contractions that are irregular and brief that occur toward the end of
gestation are called ________.
24) proteins in the blood for defense are called ________.
25) the ________ are small blood vessels that nourish tissue components in the wall of
large arteries and veins.
26) the superficial membrane of a bone is called the ________.
27) a type of farsightedness that results from a loss of lens elasticity with age is
________.
28) the trochlea is located on the ________.