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Physiology Part 2
weeks 7-13
| Question | Answer |
|---|---|
| The part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the: | hypothalamus |
| A child was frightened by a large dog. The pupils of the child’s eyes became dilated, and the heart and respiratory rates increased. These symptoms were caused by stimulation of: | the sympathetic nervous system. |
| Which of the following is a description of the principle of autonomic antagonism as it relates to the autonomic nervous system? | If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it. |
| Clearness or sharpness of visual perception is known as: | visual acuity |
| Accommodation for near vision necessitates | an increase in the curvature of the lens. constriction of the pupils. convergence of the two eyes. |
| All of the following are nonsteroid hormones except: | cortisol |
| Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called | diapedesis. |
| Which two factors promote the return of venous blood to the heart? | blood-pumping action of respirations and skeletal muscle contractions |
| The localized pressure gradient needed to maintain blood flow in a tissue is called | perfusion pressure. |
| The body’s defense mechanisms can be organized into one of two major categories of immune mechanisms; these are | innate and adaptive immunity. |
| The ingestion and destruction of microorganisms or other small particles is called | phagocytosis. |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body. | thymocytes |
| During inspiration, the expansion of the lungs causes: | a decrease in alveolar pressure. |
| Which of the following would have the greatest accelerating effect on the dissociation of oxygen from hemoglobin? | Decreased PO2 and increased PCO2 |
| Which of the following is not a regulated process associated with the functioning of the respiratory system? | Control of cell metabolism rate |
| The hormone that stimulates the gallbladder to release bile is: | cholecystokinin. |
| Which of the processes of mechanical digestion involves the esophagus? | Deglutition Peristalsis |
| The major site for the absorption of the end products of digestion is the: | small intestine. |
| Which of the following is not one of the main chemical classes of neurotransmitters? | Triglycerides |
| No impulse can be sent through a neuron: | during the absolute refractory period. |
| When an impulse reaches a synapse: | chemical transmitters are released. |
Created by:
mendozamichelle67
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