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Lay Sia
Study Stack 2 Wk 7-13
| Question | Answer |
|---|---|
| The set of coordinated commands that control the programmed muscle activity mediated by extrapyramidal pathways is called the | motor program |
| The most numerous cerebral tracts are the | association tracts |
| The second largest part of the brain, located just below the posterior portion of the cerebrum, is the | cerebellum |
| Which cranial nerve is responsible for the sense of smell? | olfactory |
| The groove between the frontal and parietal lobes of the cerebral cortex is the | The central sulcus |
| A _____ is a skeletal muscle or group of muscles that receives motor axons from a given spinal nerve. | myotome |
| The limbic system integrates | emotion |
| Which of the following is NOT an example of sympathetic stimulation? | constriction of the bronchioles You Answered decreased secretion of the pancreas constriction of the urinary sphincters dilation of skeletal muscle blood vessels |
| The effect of sympathetic stimulation on the urinary bladder is | relaxation |
| Which of the following is NOT correct? | Sympathetic preganglionic axons pass along the dorsal root of certain spinal nerves. |
| The _____ nerve transmits impulses that result in sensations of equilibrium. | vestibular |
| Another name for the parasympathetic nervous system is the nervous system. | craniosacral |
| A reflex consists of either a muscle contraction or a | glandular secretion |
| The two main types of adrenergic receptors are | alpha and beta |
| Each skin surface area supplied by sensory fibers of a given spinal nerve is a | dermatome. |
| Many cerebral functions have typical locations. This fact is known as | cerebral localization. |
| Mixed cranial nerves contain axons of | sensory and motor neurons |
| 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 |
| The cortex is capable of storing and retrieving information from both short-term and long-term | memory |
| The reticular activating system maintains | consciousness |
| Tongue movement is controlled by which cranial nerve? | hypoglossal |
| The somatic motor system includes all the _____ motor pathways _____ the CNS. | voluntary; outside |
| The action of acetylcholine is quickly terminated by its being hydrolyzed by the enzyme | acetylcholinesterase. |
| 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 |
| Axon terminals of autonomic neurons release either of two neurotransmitters, | norepinephrine and acetylcholine. |
| 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 |
| “Fight or flight” physiological changes include all of the following EXCEPT | constriction of respiratory airways. |
| Acetylcholine binds to _____ receptors. | cholinergic |
| If the center of a reflex arc is the brain, the response it mediates is called a | cranial reflex |
| Both sympathetic and parasympathetic divisions are tonically active, which means they | continually conduct impulses to autonomic effectors. |
| The somatic senses enable us to detect sensations, including: | touch. temperature. pain. all of the above. |
| The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is | malleus, incus, and stapes |
| Dynamic equilibrium depends on the functioning of the | crista ampullaris. |
| 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 above. |
| The last step in the nonsteroid hormone mechanism of action is: | protein kinases activate other enzymes. |
| When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called: | permissiveness. |
| All of the following are true statements except: there are at least 16 different prostaglandins. the first prostaglandin was identified in semen. PGFs have been used to induce labor and accelerate the delivery of a baby. | aspirin produces some of its effects by increasing PGE synthesis. |
| Visceroceptors are located in which of the following? | Internal organs |
| The receptors responsible for sensing crude and persistent touch are the: | Ruffini corpuscles. |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| Which is not true of the hormone somatostatin? | It stimulates the secretion of insulin. |
| Which of the following is not true of a receptor potential? | It follows the all-or-none law. |
| One of the few hormones that functions on a positive-feedback loop is: | oxytocin |
| Which of the following is true about pain receptors? | Alpha fibers are associated with sharp, localized pain. |
| Movement of hair cells in the organ of Corti against the _____ membrane can stimulate nerve impulse condition. | tectorial |
| Which of the following is not a characteristic of the endocrine system? | Chemical messenger travels a short distance. |
| The major hormone produced by the corpus luteum is: | progesterone |
| The two-point discrimination test can be used to measure: | the sensitivity of the skin in various parts of the body. |
| Which of the following statements is not true of the pineal gland? | Melatonin is stimulated by the presence of sunlight. |
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nownow999
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