1) in large arteries, the thick layer of elastic fibers is called the
a) tunica intima.
b) external elastic membrane.
c) tunica media.
d) internal elastic membrane.
e) tunica externa.
2) the obturator nerve is distributed to the
a) adductors of the hip.
b) skin over the perineum.
c) extensors of the hip.
d) skin over buttocks.
e) biceps femoris.
3) branches off the aortic arch include the
a) brachiocephalic trunk.
b) left subclavian artery.
c) left common carotid artery.
d) left subclavian artery and left common carotid artery
e) brachiocephalic trunk, left subclavian artery, and left common carotid artery
4) changes that occur in the urinary system with aging include all of the following,
except
a) a decline in the number of functional nephrons.
b) a reduction in the gfr (glomerular filtration rate).
c) increased sensitivity to adh.
d) problems with the micturition reflex.
e) loss of sphincter muscle tone.
5) in an ionic bond, the electron donor is the ________, whereas the electron acceptor is
the ________.
a) acid, base
b) salt, ion
c) anion, cation
d) base, acid
e) cation, anion
6) the filtration barrier in the renal corpuscle consists of three layers
a) filtration slits, foot processes, and slit pores.
b) fenestrations, matrix, and foot processes.
c) endothelium of glomerulus, dense layer of glomerulus, and podocyte filtration slits.
d) dense layer of glomerulus, foot processes, and fenestrations in the capsule.
e) podocyte filtration slits, matrix cells in the glomerulus, and endothelium of
glomerulus.
7) the reaction a + b + energy ab is an example of a(n)
a) exergonic reaction.
b) endergonic reaction.
c) equilibrium reaction.
d) decomposition reaction.
e) exchange reaction.
8) during activities requiring aerobic endurance
a) glycogen and glycolysis are the primary sources of reserve energy.
b) oxygen debts are common.
c) most of the muscle’s energy is produced in mitochondria.
d) fatigue occurs in a few minutes.
e) oxygen is not required.
9)
figure 22-1 the structure of a lymph node
identify the structure labeled “1”
a) efferent lymphatic vessel
b) venule
c) arteriole
d) afferent lymphatic vessel
e) lymphatic nodule
10) all of the following are true of epidermal ridges, except that they
a) extend into the dermis.
b) contain increased numbers of free nerve endings.
c) cause ridge patterns on the surface of the skin.
d) produce patterns that are determined genetically.
e) interconnect with the dermal papillae.
11) sodium (na) has an atomic number of 11. how many electrons are in the outer
electron shell of a neutral sodium atom?
a) 1
b) 2
c) 3
d) 4
e) 8
12) which of the following might occur in an overdose of insulin?
a) glycosuria
b) ketoacidosis
c) high blood glucose
d) low blood glucose
e) polyuria
13) the trace element needed for hemoglobin synthesis is
a) zinc.
b) copper.
c) cobalt.
d) iodine.
e) silicon.
14) the hypothalamus acts as both a neural and a(n) ________ organ.
a) endocrine
b) cardiovascular
c) renal
d) muscular
e) hepatic
15) the term for an undersized head is
a) encephalopathy.
b) microcephaly.
c) macrocephaly.
d) encephalitis.
e) none of the answers are correct.
16) a(n) ________ is a printed record of the brain’s electrical activity over a period of
time.
a) electrocardiogram
b) electroencephalogram
c) x-ray
d) mri
e) ct scan