1) if fertilization occurs, the ________ is maintained because the embryo secretes
________.
a) corpus albicans; human chorionic gonadotrophin
b) corpus luteum; luteinizing hormone
c) corpus cavernosum; human chorionic gonadotrophin
d) corpus luteum; human chorionic gonadotrophin
e) corpus albicans; placental prolactin
2) adrenergic synapses release the neurotransmitter
a) acetylcholine.
b) norepinephrine.
c) dopamine.
d) serotonin.
e) gaba.
3) a patient has an end-diastolic volume of 125 ml. a heart attack has weakened her left
ventricle so it can pump a stroke volume of only 40 ml. calculate her end-systolic
volume.
a) 85 ml
b) 3.1 ml
c) 5000 ml
d) 165 ml
e) not enough data given to calculate the end-systolic volume
4) inflammation produces localized
a) swelling.
b) redness.
c) heat.
d) pain.
e) all of the answers are correct.
5) the primary role of the carbonic-acid-bicarbonate buffer system is to
a) buffer stomach acid.
b) buffer carbonic acid formed by carbon dioxide.
c) limit ph changes caused by organic and fixed acids.
d) buffer the urine.
e) increase ventilation.
6) sensory transduction can involve which of the following?
a) a stimulus altering the permeability of a receptor membrane
b) change in the flow of ions across the sensory membrane
c) the production of a receptor potential
d) inhibition of neurotransmitter release
e) all of the answers are correct.
7) the ________ carries nutrient-rich blood into the liver.
a) hepatic artery
b) gastric vein
c) myenteric capillaries
d) hepatic portal vein
e) superior mesenteric vein
8) an important vitamin that is formed in the skin when it is exposed to sunlight is
a) vitamin a.
b) vitamin b.
c) vitamin c.
d) vitamin d.
e) vitamin e.
9) which of the following occurs when the articular cartilage is damaged?
a) the matrix begins to break down.
b) the exposed surface changes to a rough feltwork.
c) friction in the joint increases.
d) normal synovial joint function is unable to continue.
e) all of the answers are correct.
10) interstitial cells
a) are also called leydig cells.
b) respond to luteinizing hormone.
c) produce testosterone.
d) are located between seminiferous tubules.
e) all of the answers are correct.
11) the ions in highest concentration in the extracellular fluid are
a) sodium, chloride, and bicarbonate.
b) sodium, potassium, and bicarbonate.
c) sodium, potassium, and calcium.
d) sodium, hydrogen, and chloride.
e) sodium, potassium, and phosphate.
12) skeletal muscles in which the fascicles form a common angle with the tendon are
________ muscles.
a) parallel
b) circular
c) pennate
d) convergent
e) divergent
13) clusters of rer and free ribosomes in neurons are called
a) neurofilaments.
b) neurofibrils.
c) perikaryon.
d) nissl bodies.
e) microglia.