1) the citric acid cycle is an aerobic process because
a) adp is phosphorylated.
b) fadh2 is produced.
c) citric acid molecules have oxygen atoms.
d) oxygen is needed to remove carbon atoms as carbon dioxide.
e) nah+ is converted into nadh.
2)
figure 15-2 the corticospinal pathway
what occurs in this neural pathway at label “3”?
a) synapse
b) communication between sensory and motor neurons
c) amplification of motor signals
d) decussation
e) autonomic reflexes
3) bone plays a central role in the regulation of blood levels of
a) potassium.
b) iron.
c) sulfate.
d) calcium.
e) sodium.
4) the respiratory membrane of the gas exchange surfaces consists of
a) pseudostratified ciliated columnar epithelium.
b) moist cuboidal epithelium.
c) simple squamous epithelium.
d) ciliated squamous epithelium.
e) surfactant cells.
5) some neurons within the basal nuclei are known to
a) stimulate neurons with gaba.
b) inhibit neurons with gaba.
c) stimulate neurons with acetylcholine.
d) stimulate neurons with gaba and stimulate neurons with acetylcholine.
e) inhibit neurons with gaba and stimulate neurons with acetylcholine.
6) which of the following is sometimes called “prickling pain”?
a) mechanical damage
b) chemicals
c) extremes of temperature
d) fast pain
e) fast and slow pain
7) substances secreted by the distal convoluted tubule include
a) hydrogen ions.
b) penicillin.
c) creatinine.
d) potassium ions.
e) all of the answers are correct.
8) damage to the preoptic area of the hypothalamus leads to which problem?
a) an intense thirst
b) an uncontrolled sex drive
c) reduced ability to regulate body temperature
d) an insatiable appetite
e) production of a large volume of urine
9) which of following is a function of the skeletal system?
a) body support
b) calcium homeostasis
c) protection of internal organs
d) blood cell production
e) all of the answers are correct.
10) the connection of the anterior portion of the tongue to the underlying epithelium is
the
a) uvula.
b) faux.
c) lingual frenulum.
d) labial frenulum.
e) glossal septum.
11)
figure 5-1 the components of the integumentary system
which tissue is located in the region labeled “2”?
a) stratified squamous epithelium
b) areolar connective tissue
c) adipose tissue
d) cartilage and blood
e) reticular connective tissues
12) the spinal tract that unconsciously maintains balance and muscle tone is the
________ tract.
a) lateral corticospinal
b) anterior corticospinal
c) rubrospinal
d) reticulospinal
e) vestibulospinal
13) immunoglobulins that are most abundant and are responsible for resistance against
many viruses, bacteria, and bacterial toxins are
a) iga.
b) igd.
c) ige.
d) igg.
e) igm.