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Week 7-13
| Question | Answer |
|---|---|
| No impulse can be sent through a neuron | during the absolute refractory period. |
| Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO)? | Phenelzine |
| The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second. | 130 |
| T/F: The outside of the plasma membrane is negatively charged, and the inside is positively charged. | True |
| Parasympathetic stimulation has no effect on any of the following areas except: | sweat glands |
| Audition is a function of the _____ lobe. | temporal |
| All of the following are examples of parasympathetic stimulation except | increased heart rate |
| What would the result be if the phrenic nerve received an impulse from the cervical plexus? | The diaphragm would stop contracting |
| The vomiting reflex is mediated by the: | medulla |
| Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate. | vagus |
| T/F: Melatonin is stimulated by the presence of sunlight. | False |
| One of the few hormones that functions on a positive-feedback loop is: | oxytocin |
| The vagus is said to act as a “brake” on the heart. This situation is called | vagal inhibition. |
| The mechanisms of which three hormones work together to regulate blood volume? | aldosterone, ANH, and ADH |
| _____ is used to determine the volume percentage of red blood cells in whole blood. | Hematocrit |
| A hematocrit of 56% would be an indication of: | polycythemia |
| Recognition of antigens by antibodies occurs when an | antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site. |
| The term used to describe the volume of air exchanged during normal inspiration and expiration is: | tidal volume. |
| Which gas law deals with the solubility of gases in solution? | Henry |
| About 98.5% of the oxygen carried by systemic arterial blood is attached to: | hemoglobin |
| When the pressure in the lung is greater than atmospheric pressure: | expiration occurs. |
| By the time the blood leaves the lung capillaries to return to the heart, what percentage of the blood’s hemoglobin has united with oxygen? | 97% |
| An end product of fat digestion is: | glycerol |
| Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food? | Cephalic phase |
| Which blood vessel carries absorbed food from the GI tract to the liver? | Portal vein |