1) in adults, the only site of red blood cell production, and the primary site of white
blood cell formation, is the
a) liver.
b) spleen.
c) thymus.
d) red bone marrow.
e) yellow bone marrow.
2) clusters of ganglionic sympathetic neurons lying along either side of the spinal cord
are called sympathetic ________ ganglia.
a) intramural
b) collateral
c) chain
d) prevertebral
e) suprarenal
3) the joints that are subjected to the greatest load are found in the
a) ankles.
b) knees.
c) hands.
d) spine.
e) hips.
4) ________ line the brain ventricles and spinal canal.
a) astrocytes
b) satellite cells
c) oligodendrocytes
d) microglia
e) ependymal cells
5) the innermost electron shell in an atom holds up to ________ electrons.
a) 1
b) 2
c) 4
d) 6
e) 8
6) the afferent neuron that carries the sensation to the cns is a ________ neuron.
a) receptor
b) first-order
c) second-order
d) third-order
e) fourth-order
7) the basic functional unit of the liver is the
a) hepatocyte.
b) kupffer cell.
c) lobule.
d) portal area.
e) bile canaliculus.
8) the cells that are formed during spermatogenesis by the first meiosis are called
a) spermatogonia.
b) primary spermatocytes.
c) secondary spermatocytes.
d) spermatids.
e) spermatozoa.
9) in response to the arrival of acidic chyme in the duodenum, the
a) blood levels of secretin rise.
b) blood levels of cholecystokinin fall.
c) blood levels of gastrin rise.
d) blood levels of enterocrinin fall.
e) liver releases enzymes for chemical digestion.
10) the chemical behavior of an atom is determined by
a) the number of protons.
b) the number of neutrons.
c) the outermost electron shell.
d) the size of the atom.
e) the mass of the nucleus.