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Espinda-Fuaoa
Study Stack Set 2 / WK 14
| Question | Answer |
|---|---|
| Normal infants will show the Babinski reflex up to the age of _____ years. | 1.5-2 |
| The parasympathetic and sympathetic divisions always act with a cooperative influence, and through summation of the impulses, the effect can be increased. | False |
| 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. |
| Damage to the _____ nerve could make the diaphragm unable to function. | phrenic |
| A mixed nerve is one that: | carries both sensory and motor fibers. |
| The knee jerk can be classified as a segmental reflex because: | impulses that mediate it enter and leave the same segment of the cord. |
| The spinal tract that is located in the side of the cord, originates in the brain, and terminates in the spinal cord is the _____ tract. | lateral corticospinal |
| Recognition of antigens by antibodies occurs when an | antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site. |
| The functions of the lymph nodes are | defense and hematopoiesis. |
| The _____ postulates that when an antigen enters the body, it selects the clone whose cells are committed to synthesizing its specific antibody and stimulates these cells to proliferate and to thereby produce more antibodies. | clonal selection theory |
| Pyrogen molecules trigger the fever response by promoting the production of | prostaglandins. |
| Lymphocytes that kill many types of tumor cells and cells infected by different kinds of viruses are known as | natural killer cells. |
| 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 | 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 |
| _____ refers to a phenomenon in which the genetic characteristics common to a particular kind of organism provide defense against certain pathogens. | Species resistance |
| _____, a natural constituent of blood, acts as an antithrombin and prevents clots from forming in vessels. | Heparin |
| Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood. | protein molecules present |
| The term blood type refers to the type of blood cell | antigen. |
| The vagus is said to act as a “brake” on the heart. This situation is called | vagal inhibition. |
| Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of | vasodilation |
| The mechanisms of which three hormones work together to regulate blood volume? | aldosterone, ANH, and ADH |
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sespinda
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