1) near the carotid sinus,
a) the common carotid divides into an internal and an external branch.
b) the internal carotids fuse with the vertebral arteries.
c) the external carotid forms the internal carotid.
d) veins and arteries anastomose.
e) the aorta gives rise to the common carotids.
2) factors involved in senescence include all of the following, except a(n)
a) decrease in the size of some cell populations.
b) accumulation of mutations.
c) reduction in immune response.
d) reduced mitosis in stem cells.
e) none of the answers are correct.
3) a patient who has been both vomiting and having diarrhea is losing ________ from
his body.
a) water
b) sodium
c) bicarbonate ion
d) hydrogen ion
e) all of the answers are correct.
4) our perception of our environment is imperfect for all of the following reasons,
except that
a) humans lack receptors for every possible stimulus.
b) receptors respond in an all-or-nothing manner.
c) not all sensations lead to a perception.
d) abnormal receptor function can produce sensations that have no basis in fact.
e) our receptors have limited sensitivity.
5) the largest lipoproteins, ranging in diameter up to 0.5 m, ________ are produced by
intestinal epithelial cells from the fats in food.
a) very-low-density lipoproteins (vldls)
b) low-density lipoproteins (ldls)
c) intermediate-density lipoproteins (idls)
d) high-density lipoproteins (hdls)
e) chylomicrons
6) ankle extension is also called
a) dorsiflexion.
b) inversion.
c) eversion.
d) plantar flexion.
e) protraction.
7) if a response increases a disturbance, the control system is classified as a ________
feedback system.
a) deficit
b) negative
c) neutral
d) polarized
e) positive
8) contractions of the papillary muscles
a) close the atrioventricular valves.
b) close the semilunar valves.
c) eject blood from the ventricles.
d) prevent the atrioventricular valves from reversing into the atria.
e) eject blood from the atria into the ventricles.
9) sensory encoding of the perceived location of a stimulus depends on
a) the frequency of action potentials.
b) which labeled line is active.
c) the specific location of the cortical neuron that is stimulated.
d) the specific sensitivity of the peripheral receptor.
e) the number of receptors stimulated.
10) ________ is a disorder affecting the ability to speak or read.
a) aphasia
b) ataxia
c) apraxia
d) bell’s palsy
e) dysphagia
11) arrange the four structures listed below into the order in which sperm pass from the
testis to the urethral meatus.
1. ductus deferens
2. urethra
3. ejaculatory duct
4. epididymis
a) 1, 3, 4, 2
b) 4, 3, 1, 2
c) 4, 1, 2, 3
d) 4, 1, 3, 2
e) 1, 4, 3, 2
12) when a small amount of hcl or naoh is added to a solution of na2hpo4, the ph of the
solution barely changes. based on these observations, all of the following are true
concerning the compound na2hpo4, except
a) na2hpo4 is able to accept extra hydrogen ions from the hcl.
b) na2hpo4 is able to donate hydrogen ions to the oh- from naoh.
c) na2hpo4 adsorbs excess h+ and oh- directly onto the surface of its crystalline
structure.
d) na2hpo4 is a salt formed from reacting a strong base with a weak acid.
e) na2hpo4 acts as a buffer.
13) bill wants to determine his blood type, so he takes a few drops of blood from a
puncture wound in his finger and mixes it with various antisera. his blood cells
agglutinate when mixed with the anti-a sera but not with the anti-b or anti-d sera. this
means
a) bill could receive type b-negative blood in a transfusion.
b) bill could donate blood to an individual with type o blood.
c) bill is rh positive.
d) bill’s plasma contains b antibodies.
e) bill’s red blood cells contain the o surface antigen.
14) antibodies are produced by
a) macrophages.
b) microphages.
c) plasmocytes.
d) mast cells.
e) fibroblasts.
15) harry suffers from cystic fibrosis and has severe breathing difficulties. his problems
result from
a) genetic mutation in cilia production.
b) laryngospasm.
c) thick secretions that are difficult to transport.
d) lack of neural control of respiration.
e) excessive mucus secretions in the trachea.
16) ________ bone reduces the weight of the skeleton and reduces the load on muscles.
a) short
b) irregular
c) spongy
d) compact
e) long
17) the systolic part (both atrial and ventricular) of a cardiac cycle lasts on average
a) 3 seconds.
b) 370 msec.
c) 5 seconds.
d) 100 msec.
e) 800 msec.
18) ________ is the process of sloughing off the old functional layer of the
endometrium. (note: be sure to capitalize the first letter of your answer).
19) the common name for the patella is the ________.
20) when the triceps brachii muscle contracts, what movements does it produce?
21) explain the role of water molecules in polysaccharide formation.
22) a boot-top fracture that involves both lower leg bones is called a(n) ________
fracture.
23) primary spermatocytes are produced by mitosis of cells called ________.
24) the optic nerve crosses at the ________.
25) the ________ serves as a worldwide official standard of anatomical vocabulary.
26) the process of duplicating chromosomes prior to cell division is called _______.
27) four signs useful for determining if a suspicious mark on the skin is melanoma
follow the abcd mnemonic. identify what each letter abbreviates.