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Danielle G. 3
Physiology 7-13
| Question | Answer |
|---|---|
| What mechanism quickly terminates the action of a neurotransmitter once it binds to its postsynaptic receptor? | Neurotransmitter molecules are transported back into synaptic knobs; Neurotransmitter molecules are transported into nearby glial cells; Neurotransmitter molecules are metabolized into inactive compounds. |
| True or False: Neurons are the only living cells that maintain a difference in the concentration of ions across their membranes. | False |
| Normal infants will show the Babinski reflex up to the age of _____ years. | 1.5-2 |
| True or False: The parasympathetic and sympathetic divisions always act with a cooperative influence, and through summation of the impulses, the effect can be increased. | False |
| Sympathetic responses generally have widespread effects on the body because: | preganglionic fibers synapse with several postsynaptic fibers. |
| Both sympathetic and parasympathetic divisions are tonically active, which means they | continually conduct impulses to autonomic effectors. |
| The production of thyroid hormone is stimulated by another hormone from the: | anterior pituitary. |
| Which of the following is true about pain receptors? | Alpha fibers are associated with sharp, localized pain. |
| All of the following are nonsteroid hormones except: oxytocin. calcitonin. cortisol. glucagon. | Cortisol |
| Which ear structures are responsible for the amplification and transfer of sound from the external ear to the inner ear? | the ossicles |
| The chemoreceptors in the carotid bodies are particularly sensitive to: | hypercapnia |
| Blood volume per kilogram of body weight varies inversely with: | body fat |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics |
| The ability of our immune system to attack abnormal or foreign cells but spare our own normal cells is called: | adaptive immunity. |
| Recognition of antigens by antibodies occurs when an: | antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site. |
| External respiration can be defined as: | the exchange of gases between the lung and the blood capillaries in the lung; pulmonary ventilation. |
Created by:
dgillis88
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