Type
Quiz
Book Title
Human Physiology 14th Edition
ISBN 13
978-0077836375

Psych 69121

July 19, 2017
An axon will depolarize only if the membrane potential reaches between -70mV and
-55mV. This follows the
A. All-or-none law.
B. recruitment law.
C. graduated law.
D. threshold law.
What structure of a mature follicle is a barrier to sperm and fertilization?
A.zona pellucida
B.corona radiata
C.antrum
D.cumulus oophorus
Which of the following neurotransmitters is NOT associated with basal nuclei function?
A. dopamine
B. GABA
C. acetylcholine
D. glutamate
The aggregation of cystallin proteins in the lens produces
A.glaucoma.
B.cataracts.
C.astigmatism.
D.myopia.
In the reaction (H2O + CO2 H2CO3), increasing the concentration of H2O would
A. decrease the concentration of H2CO3.
B. increase the concentration of H2CO3.
C. increase the concentration of CO2.
D. have no effect on either CO2 or H2CO3 concentrations.
When an object is more than 20 feet from the eyes,
A. the ciliary muscle relaxes.
B. there is tension on the zonular fibers of the suspensory ligament.
C. the lens is pulled and flattened.
D. All apply.
Glycolysis would be inhibited by
A. a lack of oxygen.
B. an excess of ATP.
C. an excess of ADP.
D. None apply.
The activation of resting T lymphocytes is prevented by
A.inhibiting interleuken-1 secretion by macrophages.
B.inhibiting interleuken-4 by helper T-lymphocytes.
C.stimulating secretion of interferons by T-lymphocytes.
D.decreasing the secretion of tumor necrosis factors by macrophages.
The most common form of color blindness is deuteranopia, which is congenital absence
of the ____ gene.
A.M
B.L
C.S
Renal clearance of PAH __________ glomerular filtration rate.
A.is equal to
B.exceeds
C.is less than
The normal range of arterial blood pH is
A. 6.50-7.50.
B. 7.35-7.45.
C. 6.95-7.05.
D. 7.15-7.25.
Biological catalysts
A. decrease reaction rates.
B. alter a reaction product.
C. remain unchanged at the end of the reaction.
D. All apply.
Which of the following is NOT true of single-unit smooth muscle?
A.All cells receive autonomic stimulation.
B.It displays pacemaker activity.
C.It displays myogenic response to stretch.
D.Acetylcholine binds to muscarinic receptors and closes K+ channels.
Antigens
A.are large, complex molecules.
B.are usually small molecules.
C.normally have a simple structure.
D.are often normally found in body fluids.
A condition in which there is a fall in blood pressure upon standing that is not
compensated for by the baroreceptor reflex is called
A.postural hypotension.
B.postural bradycardia.
C.postural tachycardia.
D.postural atherosclerosis.
Long term blockage of the canal of Schlemm can induce
A.glaucoma.
B.cataracts.
C.macular degeneration.
D.detached retina.
________ are a class of glycoproteins that bind to components in the extracellular
matrix thereby acting as adhesion molecules between cells and the matrix.
A. Glycocalyces
B. Aquaporins
C. Desmosomes
D. Integrins
When active areas of the brain receive excessive blood flow over their aerobic
requirements, this is called
A.hyperemia.
B.hypoemia.
C.hypersensitive.
D.myogenic.
Bone marrow stem cells and mast cells proliferate in response to
A.interleukin-1.
B.interleukin-2.
C.interleukin-3.
D.interleukin-4.
Myostatin is
A.a paracrine regulator that inhibits satellite cell function and muscle growth.
B.a paracrine regulator that stimulates satellite cell function and muscle growth.
C.an autocrine regulator that inhibits satellite cell function and muscle growth.
D.an autocrine regulator that stimulates satellite cell function and muscle growth.
Which of the following is NOT a granular leukocyte?
A. neutrophil
B. eosinophil
C. monocyte
D. basophil
Decreased phenylalanine metabolism causes
A.albinism.
B.hypercholeteremia.
C.lactose intolerance.
D.Tay-Sachs disease.
Depletion of extracellular K+ may induce
A.metabolic acidosis.
B.metabolic alkalosis.
C.hyperventilation.
D.None of the choices are correct.
How many amino acids are essential for an adult?
A. eight
B. nine
C. ten
D. twelve
Tissue transplants should have matching ______ to prevent rejection in the host.
A.MHC molecules
B.perforins
C.interleukins
D.All of the choices are correct.
Bipolar limb lead three uses the
A.left and right arms.
B.left arm and left leg.
C.right arm and left leg.
D.left arm and right leg.
The capsaicin receptor serves as both an ion channel and a receptor for the molecule in
chili peppers that causes sensations of
A.heat and pain.
B.cold and pain.
C.pressure and pain.
D.heat and pressure.
Thermoregulation directly involves
A.apocrine sweat glands.
B.endocrine glands.
C.eccrine sweat glands.
D.sebaceous glands.
Cells supporting neuron cell bodies in ganglia are termed
A. astrocytes.
B. ependymal cells.
C. satellite cells.
D. Schwann cells.
How many sperm are produced from one spermatogonium?
A.one
B.two
C.four
D.eight
The minimum urine volume needed to excrete metabolic wastes produced by the body
is called as
A. renal plasma threshold.
B. renal autoregulation.
C. obligatory water loss.
D. renal transport minimum.
What is the lighter area in the center of the A-band called?
A. M-line
B. titin
C. Z-disc
D. H band
Tay-Sachs disease is caused by a genetic defect which affects the activity of _______
enzymes.
A.mitochondrial
B.lysosomal
C.centrosomal
D.ribosomal

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