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Physiology
Activity 8
| Question | Answer |
|---|---|
| A _____ is a skeletal muscle or group of muscles that receives motor axons from a given spinal nerve. | myotome |
| Which cranial nerve is responsible for the sense of smell? | olfactory |
| The _____ is an extension of the great toe, with or without fanning of the other toes, in response to stimulation of the outer margin of the sole of the foot. | Babinski sign |
| The cortex is capable of storing and retrieving information from both short-term and long-term | memory |
| The action of acetylcholine is quickly terminated by its being hydrolyzed by the enzyme | acetylcholinesterase |
| “Fight or flight” physiological changes include all of the following EXCEPT | constriction of respiratory airways. |
| Acetylcholine binds to _____ receptors. | cholinergic |
| A reflex consists of either a muscle contraction or a | glandular secretion. |
| The groove between the frontal and parietal lobes of the cerebral cortex is the | central sulcus. |
| The limbic system integrates | emotion. |
| The _____ consists of several structures that lie beneath the thalamus and form the floor of the third ventricle and the lower part of its lateral walls. | hypothalamus |
| The reticular activating system maintains | consciousness |
| The second largest part of the brain, located just below the posterior portion of the cerebrum, is the | cerebellum. |
| The effect of sympathetic stimulation on the urinary bladder is | relaxation. |
| Both sympathetic and parasympathetic divisions are tonically active, which means they | continually conduct impulses to autonomic effectors. |
| Axon terminals of autonomic neurons release either of two neurotransmitters, | norepinephrine and acetylcholine. |
| The most numerous cerebral tracts are the | association tracts. |
| Tongue movement is controlled by which cranial nerve? | hypoglossal |
| Which of the following is NOT an example of sympathetic stimulation? | constriction of the bronchioles |
| The _____ nerve transmits impulses that result in sensations of equilibrium. | vestibular |
| The two main types of adrenergic receptors are | alpha and beta. |
| The set of coordinated commands that control the programmed muscle activity mediated by extrapyramidal pathways is called the | motor program. |
| Another name for the parasympathetic nervous system is the nervous system. | craniosacral |
| Mixed cranial nerves contain axons of | sensory and motor neurons. |
| If the center of a reflex arc is the brain, the response it mediates is called a | cranial reflex. |
| Which of the following is NOT correct? | Sympathetic preganglionic axons pass along the dorsal root of certain spinal nerves. |
| Which region of the brain plays a part in the mechanism responsible for emotions by associating sensory impulses with feelings of pleasantness and unpleasantness? | thalamus |
| Many cerebral functions have typical locations. This fact is known as | cerebral localization. |
| Each skin surface area supplied by sensory fibers of a given spinal nerve is a | dermatome. |
| The somatic motor system includes all the _____ motor pathways _____ the CNS. | voluntary; outside |
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