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Cardiogenic shock can result from
A.myocardial infarction.
B.increased cardiac output.
C.increased sympathetic outflow to the heart.
D.parasympathetic antagonists.
The rate of diffusion is influenced by
A. the concentration gradient.
B. membrane permeability.
C. membrane surface area.
D. All apply.
What is the process of drawing leukocytes to the site of an infection?
A.chemotaxis
B.diapedesis
C.extravasation
D.opsonization
High progesterone levels during the luteal phase
A.causes cervical mucus to thicken.
B.suppresses FSH and LH.
C.causes thickening of the endometrium.
D.All of the choices are correct.
There are ___ pairs of cranial nerves and ____ pairs of spinal nerves.
A. 15, 31
B. 31, 12
C. 12, 31
D. 12, 25
The structures that function in equilibrium are known as the
A.vestibular apparatus.
B.cochlea.
C.bony labyrinth.
D.organ of Corti.
The light band of a skeletal muscle is known as the
A. A band.
B. Z disc.
C. I band.
D. H band.
What element is necessary for production of thyroxine?
A.sodium
B.calcium
C.iodine
D.chlorine
Ganglion cells are stimulated optimally by
A.light striking the entire retinal surface.
B.light striking a spot on the retina.
C.a bar of light moving on the retina.
D.a bar of light striking a spot on the retina.
How much blood does the average-sized adult have?
A.2 liters
B.4 liters
C.5 liters
D.7 liters
The only energy source for the brain is
A.glucose.
B.glycogen.
C.fatty acid.
D.protein.
Metal ions such as magnesium or calcium can serve as enzyme
A.coenzymes.
B.ribozymes.
C.substrates.
D.cofactors.
The optic nerve is formed from fibers of
A.rods and cones.
B.bipolar cells.
C.amacrine cells.
D.ganglion cells.
Which of the following is TRUE of taste?
A. Taste receptors are considered interoceptors.
B. Sweet is sensed at the tip of the tongue.
C. Chemicals must be dissolved to stimulate the taste cells.
D. All apply.
An atopic allergic asthmatic would have
A.activation of helper T lynphocytes.
B.production of IgE.
C.pulmonary eosinphilia.
D.All of the choices are correct.
Adult stem cells may be found in
A. hair follicles.
B. the brain.
C. red bone marrow.
D. skeletal muscle.
E. All apply.
The ability of antibodies to promote phagocytosis is called
A.opsonization.
B.chemotaxis.
C.extravasation.
D.complementation.
The tip region of the photoreceptor cells are removed by cells of the retinal pigment
epithelium by
A.apoptosis.
B.phagocytosis.
C.opsin.
D.the bleaching reaction.
Derivatives of ________ give feces a brown color.
A.urobilinogen
B.bilirubin
C.cholesterol
D.guanylin
____________ is required for the intestinal absorption of vitamin B12.
A.Vitamin D
B.Calcium
C.Intrinsic factor
D.Vitamin C
Retrograde transport
A. moves toward the cell body.
B. moves membranes, vesicles, and viruses.
C. uses molecular motor proteins of dynein.
D. All apply.
Hyperkalemia would ____________ the resting membrane potential of the cell.
A. increase
B. decrease
C. have no effect on
Eye movements would be compromised by
A. damage to the trochlear nerve.
B. damage to the vestibulocochlear nerve.
C. damage to the vagus nerve.
D. damage to the accessory nerve.
Which of the following increase(s) lipogenesis?
A.insulin
B.epinephrine
C.glucagon
D.All of the choices are correct.
Neural crest cells differentiate into
A.the telencephalon.
B.the red nucleus.
C.the basal nuclei.
D.peripheral nervous system ganglia.
_______ is a satiety factor that acts to suppress neuropeptide Y and stimulate MSH
release.
A.Leptin
B.MSH
C.Glucose
D.Insulin
A single layer of irregularly shaped epithelial cells found lining the respiratory tract is
called
A.simple columnar epithelium.
B.stratified cuboidal epithelium.
C.pseudostratified ciliated columnar epithelium.
D.transitional epithelium.
Which type of lysosome contains undigested wastes?
A.secondary lysosome
B.residual body
C.primary lysosome
D.tertiary body
Which of the following is NOT true concerning blood vessels?
A.Arteries contain more muscle than veins.
B.Smooth muscle surrounds capillaries.
C.Valves are found in veins but not arteries.
D.Discontinuous capillaries create sinusoids.
Protein kinase catalyzes the ___________ of other enzymes in the cytoplasm.
A.hydrolysis
B.phosphorylation
C.synthesis
D.decarboxylation
Binding of epinephrine to beta-adrenergic receptors in the plasma membrane will
activate the ______ second messenger system.
A.calcium
B.IP3
C.adenylate cyclase (cAMP)
D.DAG
Which of the following is NOT a potential filtration barrier in the glomerular capsule?
A.glomerular basement membrane
B.capillary fenestrae
C.parietal layer of the capsule
D.slit diaphragm
The electron transport system is a series of _________ reactions.
A.composition-decomposition
B.dehydration synthesis-hydrolysis
C.oxidation-reduction
D.reversible
