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Christine Schermer-N
SCI221 week 7-13
| Question | Answer |
|---|---|
| In a healthy adult, a well-placed tap on the knee will result in a: | stretch of the tendon, the quadriceps femoris, and thereby stimulation of the muscle spindles. |
| All of the following are examples of parasympathetic stimulation | contraction of the urinary bladder. relaxation of the sphincters of the digestive tract. increased salivation. |
| Which of the following is an example of sympathetic stimulation? | Decreased secretion of the pancreas Constriction of the urinary sphincters Dilation of skeletal muscle blood vessels |
| A mixed nerve is one that: | carries both sensory and motor fibers. |
| Which of the following statements is not true? | The major function of the parasympathetic division is to serve as an “emergency” system. |
| The part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the: | hypothalamus. |
| Damage to the _____ nerve could make the diaphragm unable to function. | phrenic |
| 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. |
| Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate. | vagus |
| Danielle has sustained an injury that has reduced her ability to complete simple tasks such as lifting a pencil, manipulating eating utensils, and brushing her hair. The injury has affected the _____ motor pathways _____ the central nervous system (CNS). | voluntary; outside |
| The part of the brain that assists in the maintenance of balance is the: | cerebellum. |
| Impulses sent over which of the following tracts could result in voluntary movement, especially of the hands, fingers, feet, and toes of the opposite side? | Lateral corticospinal |
| The cerebellum acts with the _____ to produce skilled movement. | cerebrum |
| Which of the following is not true of the knee jerk reflex? | It is a flexor reflex. |
| 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. |
| Once inside the sympathetic chain ganglion, the preganglionic fiber may: | synapse with a sympathetic postganglionic neuron. send ascending and/or descending branches through the sympathetic trunk to synapse with postganglionic neurons in other chain ganglia. pass through one or more ganglia without synapsing. |
| What would the result be if the phrenic nerve received an impulse from the cervical plexus? | The diaphragm would stop contracting. |
| Somatic motor and autonomic pathways share all of the following characteristics except: | number of neurons between central nervous system (CNS) and effector. |
| What is the difference between a somatic reflex and an autonomic reflex? | A somatic reflex is caused by contraction of skeletal muscles, whereas an autonomic reflex consists of contraction of smooth or cardiac muscle or secretions of glands. |
| Biofeedback involves willful control of specific effectors normally controlled only autonomically. | True |
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