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The first event to occur when an adequate stimulus is applied to a neuron is:
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Dopamine, epinephrine, and norepinephrine are classified as:
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Physiology Set 2
| Question | Answer |
|---|---|
| The first event to occur when an adequate stimulus is applied to a neuron is: | some of the sodium channels at the point of stimulation open |
| Dopamine, epinephrine, and norepinephrine are classified as: | catecholamines |
| Severe depression can be caused by a deficit in certain brain synapses of: | neuropeptides |
| If the ventral nerve root of a spinal nerve were destroyed, a person would lose _____ related to that pathway. | willed movement |
| Cerebrospinal fluid circulates through the ventricles, into the central canal and _____, and is absorbed back into the blood. | subarachnoid space |
| The receptors responsible for sensing crude and persistent touch are the: | Ruffini corpuscles |
| When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called: | permissiveness. |
| Movement of hair cells in the organ of Corti against the _____ membrane can stimulate nerve impulse condition | tectorial |
| Blood volume per kilogram of body weight varies inversely with: | body fat |
| What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium? | Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. |
| The presentation of an antigen by an antigen-presenting cell activates the T cell. The cell then divides repeatedly to form a clone of identical sensitized T cells that form | effector T cells and memory cells |
| Antibodies are proteins of the family called | immunoglobulins |
| If the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately _____ ml. | 150 |
| The symbol HbNCOOH– is used for: | carbaminohemoglobin |
| The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen. | passively out of |
| Glucose moves from the GI tract into the circulatory system by the process of: | cotransport |
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bkirby97
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