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Jade Helgens

Physiology Weeks 7-13

QuestionAnswer
When a neuron is resting, the inner surface of its plasma membrane is slightly positive compared with its outer surface. True False False
The mechanisms that produce and maintain the resting membrane potential do so by producing a A. reduction of ions on the outer surface of the PM. B. slight excess of negative ions on the outer surface of the PM. C. balanced distribution of positive a D. slight excess of positive ions on the outer surface of the plasma membrane.
What mechanism terminates the action of a neurotransmitter once it binds to its postsynaptic receptor? A. Neurotransmitter transported back into synaptic knobs. B. Neurotransmitter transported into glial cells. C. Neurotransmitter metabolized into in D. All of these are correct.
Which membrane receptor acts to directly change ion permeability when stimulated? A. G-protein-coupled receptors B. Metabotropic receptor C. Ionotropic receptor D. Gated-channel receptor D. Gated-channel receptor
Neurons are the only living cells that maintain a difference in the concentration of ions across their membranes. True False False
Which of the following statements about amino acid neurotransmitters is incorrect? A. They are most common neurotransmitters in CNS. B. They are all inhibitory neurotransmitters. C. Glycine is a inhibitory neurotransmitter in the spinal cord. D. Al B. They are all inhibitory neurotransmitters.
Neurotransmitters are released in a synapse and bind to: A. Presynaptic terminals. B. The synaptic cleft. C. The base of the axon. D. Receptors on the postsynaptic neuron. D. Receptors on the postsynaptic neuron.
For a neurotransmitter to produce an inhibitory postsynaptic potential, which of the following channels must open? A. Sodium and potassium channels B. Potassium and/or chloride channels C. Sodium and chloride channels D. Only the sodium channels B. Potassium and/or chloride channels
The effect of sympathetic stimulation on the urinary bladder is A. Relaxation. B. Constriction. C. Dilation. D. No effect. A. Relaxation.
Many cerebral functions have typical locations. This fact is known as: A. Cerebral plasticity. B.Cerebral mapping. C. Cerebral localization. D. Neurophysiology. C. Cerebral localization.
Acetylcholine can stimulate _____ receptors. A. Alpha B. Beta C. Nicotinic D. Both alpha and beta C. Nicotinic
Which ear structures are responsible for the amplification and transfer of sound from the external ear to the inner ear? Correct Answer A. The ossicles B. Ear wax C. Tympanic membrane D. Stapes A. The ossicles
Where do frequencies—from high to low pitches—cause activity in the hair cells within the cochlear duct? A. The base of the cochlea B. The apex of the cochlea C. Basilar membrane D. Between the base and the apex of the cochlea Answers B&D
Accommodation for near vision necessitates A. An increase in the curvature of the lens. B. Constriction of the pupils. C. Convergence of the two eyes. D. All of the above. D. All of the above.
Fluid shift is when... A. The body's fluids move between the fluid compartments. B. The body's fluids move between the interstitial cells. C. There is an increase in capillary blood volume. D. There is a decrease in plasma protein. A. The body's fluids move between the fluid compartments.
The process of red cells are production in the marrow of certain bones is referred to as: A. Homeostasis B. Erythropoiesis C. Erythropoietin D. Hematopoiesis B. Erythropoiesis
The ingestion and destruction of microorganisms or other small particles is called: A. Pinocytosis. B. Exocytosis. C. Apedesis. D. Phagocytosis. D. Phagocytosis.
_____ refers to a phenomenon in which the genetic characteristics common to a particular kind of organism provide defense against certain pathogens. A. Inflammatory response B. Antigen resistance C. Immunity resistance D. Species resistance D. Species resistance
Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? A. immunoglobulin M B. immunoglobulin G C. immunoglobulin A D. immunoglobulin E E. immunoglobulin D A. immunoglobulin M
The ability of the lungs and thorax to stretch is referred to as A. Pressure equilibrium. B. Compliance. C. Elastic recoil. D. Partial pressure. B. Compliance.
The symbol HbNCOOH– is used for: A. Carbonic anhydrase. B. Carbaminohemoglobin. C. The heme group. D. The bicarbonate ion. B. Carbaminohemoglobin.
Chemical digestion requires the secretion of _____ into the lumen of the GI tract. A. Digestive enzymes B. Bile C. Chyme D. Digestive enzymes and bile D. Digestive enzymes and bile
Stimulation of gastric juice secretion occurs in all of the following phases except the _____ phase. A. Cephalic B. Digestive C. Gastric D. Intestinal B. Digestive
What percentage of this blood flow comes from the hepatic portal system? A. 20% B. 50% C. 80% D. 95% C. 80%
The process of swallowing is known as: A. Mastication. B. Deglutition. C. Peristalsis. D Segmentation. B. Deglutition.
Created by: jhelgens
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