1) the posterior horns of the spinal cord contain mainly
a) sensory nuclei.
b) somatic motor nuclei.
c) autonomic motor nuclei.
d) nerve tracts.
e) sympathetic nuclei.
2) in order to perform a cabg, a cardiac surgeon must
a) open the pericardial sac.
b) open the myocardium to see the av valves.
c) visualize the pulmonary valve.
d) visualize the carotid arteries.
e) all of the answers are correct.
3) interleukins do all of the following, except
a) increase t-cell sensitivity to antigens exposed on macrophage membranes.
b) stimulate b-cell activity, plasma cell formation, and antibody production.
c) stimulate inflammation.
d) elevate body temperature.
e) stimulate collagen synthesis.
4) in response to the hormone secretin, the pancreas secretes a fluid
a) rich in enzymes.
b) rich in bicarbonate ion.
c) rich in bile.
d) rich in mucus.
e) that contains only amylase.
5)
figure 10-2 muscle contractions
why is there partial relaxation in graph (c)?
a) calcium ion release is slow.
b) the muscle is starting to fatigue.
c) stimulation intensity is fluctuating.
d) atp reserves are cycling.
e) nerve stimulation frequency is below maximum.
6)
figure 29-1 early human development
identify the stage labeled “12”
a) zygote
b) early morula
c) blastocyst
d) trophoblast
e) late morula
7) the human lens focuses light on the photoreceptor cells by
a) moving up and down.
b) moving in and out.
c) changing shape.
d) opening and closing.
e) dilating and constricting.
8) the interstitial cells of the testes produce
a) lh.
b) progesterone.
c) testosterone.
d) inhibin.
e) fsh.
9) the paired cartilages that articulate with the superior border of the cricoid cartilage
are the ________ cartilages.
a) cricothyroid
b) innominate
c) cuneiform
d) corniculate
e) arytenoid
10) bladder fullness is to ________ as blood ph is to ________.
a) nociceptors; thermoreceptors
b) baroreceptors; chemoreceptors
c) baroreceptors; nociceptors
d) chemoreceptors; nociceptors
e) baroreceptors; thermoreceptors
11) aerobic metabolism normally provides ________ percent of the atp demands of a
resting muscle cell.
a) 25
b) 50
c) 70
d) 95
e) 100
12) the average length of the menstrual cycle is
a) 16 days.
b) 19 days.
c) 21 days.
d) 28 days.
e) 35 days.