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Human Physiology 8
Human Physiology 2
| Question | Answer |
|---|---|
| The set of coordinted commands that control the programmed muscle activity mediated by extrapyramidal pathways called the | motor program |
| Both sympathetic and parasympathetic divisions are tonically active, which means they | continually conduct impulses to autonomic effectors |
| The second largest part of the brain, located just below the posterior portion of the cerebrum, is the | cerebellum |
| The somatic motor system includes all the ____ motor pathways ____ the CNS | voluntary; outside |
| Which cranial nerve is responsible for the sense of smell | olfactory |
| A ___ is a skeletal muscle or group of muscles that receives motor axons from a given spinal nerve | myotome |
| If the center of a reflex arc is the brain, the response it mediates is called a | cranial reflex |
| A reflex consists of either a muscle contraction or a | glandular secretion |
| Many cerebral functions have typical locations. This fact is known as | cerebral localization |
| The effect of sympathetic stimulation on the urinary bladder is | relaxation |
| Which region of the brain plays a part of the mechanism responsible for emotions by associating sensory impulses with feelings of pleasantness and unplesantness | thalamus |
| Another name for the parasympathetic nervous system is the ____ nervous system | craniosacral |
| Acetylcholine binds to ____ receptors | cholinergic |
| The ____ nerve transmits impulses that result in sensations of equilibrium | vestibular |
| The cortex is capable of storing and retrieving information from both short-term and long-term | memory |
| The two main parts of adrenergic receptors are | alpha and beta |
| 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 action acetylocholine is quickly terminated by its being hydrolyzed by the enzyme | acetylcholinesterase |
| The most numerous cerebral tracts are the | association tracts |
| Mixed cranial nerves contain axons of | sensory and motor neurons |
| Fight or flight physiological changes include all of the following | -increased conversation of glycogen to glucose -increased respiration -dilation of blood vessels in skeletal muscles |
| Each skin surface area supplied by sensory fibers of a given spinal nerve is a | dermatone |
| 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 |
| The groove between the frontal and parietal lobes of the cerebral cortex is the | central sulcus |
| 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 limbic system integrates | emotion |
| the reticular activating system maintains | consciousness |
| The cell bodies of sympathetic preganglionic neurons are located in the lateral gray column of the certain parts of the spinal cord | true |
| there are synapses within the sympathetic ganglia | true |
| sympathetic responses are usually widespread, involving many organs | treu |
| Axon terminals of autonomic neurons release either of two neurotransmitters | norepinephrine and acetylcholine |
| Tongue movement is controlled by which cranial nerve | hypoglossal |
| Which of the following is not true of the knee jerk reflex | it is a flexor reflex |
| The parasympathetic division is the dominant controller of most autonomic effectors most of the time | true |
| under quiet, non-stressful conditions, more impulses reach autonomic effectors by cholinergic parasympathetic fibers than by adrenergic sympathetic fibers | true |
| Parasympathetic stimulation causes and increase in the secretion of pancreatic juice and insulin | true |
| the part of the brain that assists in the maintenance of balance is the | cerebellum |
| Functions of the hypothalamus | -production of hormones -go between of the psyche and soma -appetite center |
| in a healthy adult, a well-paced tap on the knee will result in a | stretch of the tendon, the quadriceps femoris, and thereby stimulation of the muscle spindles |
| Audition is a function of the ___ lobe | temproal |
| Nerve impulses over the ____ nerve cause increased peristalsis ad decreased heart rate | vagus |
| Conduction by the sixth cranial nerve results in sensations of hearing | False |
| Normal infants will show the Babinski reflex up to the age of __ years | 1.5-2 |
| Most effectors of the autonomic nervous system are dually innervated by sympathetic and parasympathetic neurons | true |
| Cerebrospinal fluid is formed by filtration of blood in the | Choroid plexuses |
| Description of the principle of autonomic antagonism as it relates to the autonomic nervous system? | If sympathetic impulses ted to stimulate an effector, parasympathetic impulses tend to inhibit it |
| Biofeedback involves willful control of specific effectors normally controlled only autonomically | true |
| Somatic motor and autonomic pathways share these characteristics | -direction of information flow -location of peripheral fibers -acetylcholine |
| The vomiting reflex is mediated by the | medulla |
| Examples of parasympathetic stimulation | -contraction of the urinary bladder -relaxation of the sphincters of the digestive tract -increased salivation |
| A mixed nerve is one that | carries both sensory and motor fibers |
| 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 |
| Actions of the oculomotor nerve | -movement of external eye muscles -movement of interistic eye muscles -proprioception of eye muscles |
| The parasympathetic and sympathetic divisions always act with a cooperative influence, and through summation of the impulses, the effect can be increased | false |
Created by:
bandgeeksunite2013