Anatomy & Pysiology 1 Exam 4
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| Efferent nerve fibers may be described as motor nerve fibers T/F | true
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| Myelination of the nerve fibers in the central nervous system is the job of the oligodendrocyte T/F | true
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| During depolarization, the inside of the neurons membrane becomes less negative T/F | true
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| If bacteria invaded the CNS tissue, microglia would migrate to the area to engulf and destroy them. | true
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| Which of the following is not a function of astrocytes? | provide defense for the CNS
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| Which of the choices below describes the ANS | motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle and glands
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| What are ciliated CNS neuroglia that can play an active role in moving the cerebrospinal fluid called? | ependymal cells
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| The sheath of Schwann is also called the | myelin sheath
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| The period after an initial stimulus when a muscle cell is not sensitive to another stimulus is the | absolute refractory period
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| Which of the following is not a special characteristic of mature neurons? | they are mitotic
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| The part of the neuron that conducts impulses away from its cell body is called _____ | axon
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| An impulse from one nerve cell is communicated to another nerve cell via the __ | synapse
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| Which of the following is not a function of the autonomic nervous system? | innervation of skeletal muscle
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| The term central nervous system refers to the | brain and spinal cord
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| The substance released at axon terminals to propagate a nervous impulse is called _____ | neurotransmitter
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| A neuron that has its primary function the job of connecting other neurons is called ___ | association neuron
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| Why does a hypertension phase generally follow a repolarization phase in action potential? | The hypertension is the response to the stimulus, repolarization. Repolarization is resting for the next hyperpolarization phase
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| Preparing the body for the "fight or flight" response is the role of the ____ | sympathetic nervous system
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| The somatic and automatic nervous systems differ in all of the following except | all of the neurotransmitters
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| The "resting and digesting" division of the automatic nervous system is the ___ | parasympathetic division
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| Control of temperature, endocrine activity, and thirst are functions associated with the ___ | hypothalamus
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| Which of these effectors is not directly controlled by the autonomic nervous system? | skeletal muscle
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| The sympathetic division is often casually referred to as the ______ | fight or flight
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| Which of the following statements concerning the brainstem is true? | damage to the brainstem is usually fatal
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| In the CNS, clusters of gray matter containing cell bodies are called | nuclei
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| Which of the following is correctly associated with the medulla oblongata? | it relays sensory information
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| The fact that the right side of the brain controls the left side of the body is explained by the | division of the cerebellum into two hemispheres
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| The pyramids of the medulla contain | ascending sensory tracts
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| Which portion of the brain stem is continuous with the spinal cord? | medulla oblongata
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| A patient with a traumatic head injury may exhibit vomiting as a result of irritation of nuclei in the | Medulla oblongata
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| A small lesion on the brainstem which resulted in a rapid heart rate, intense vasoconstriction, and elevated blood pressure would probably be located in the | medulla oblongata
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| The part of the brain that connects the medulla to the midbrain is the | pons
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| Which two portions of the brain are involved in controlling respiration? | pons, hypothalamus
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| The sleep/wake cycle is influenced by the | reticular formation
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| The reticular formation | maintains alertness and attention
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| The cerebellum communicated with other parts of the CNS by means of nerve tracts called the | cerebellar peduncles
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| The white matter of the cerebellum forms a branching network known as the | arbor vitae
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| The portion of the cerebellum that is involved in balance and eye movements is the | vermis
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| The stalk that connects the hypothalamus to the hypophysis (pituitary gland) is the | infundibulum
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| Most sensory input that ascents through the spinal cord and brainstem projects to the | thalamus
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| The mammillary bodies | are involved in emotional responses to oders
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| An individual who has an eating disorder along with intense thirst and wildly varying body temperatures may have a dysfunction of the | hypothalamus
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| Which of the following feelings is not related to hypothalamic function | feeling satiated after a meal
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| The pineal body | appears to play a role in controlling the onset of puberty
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| The cerebral gyri increase | the surface area of the cortex
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| The central sulcus separates the | frontal and partial lobes
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| During brain surgery, the superior portion of the postcentral gyrus of a patient is stimulated. The patient is most likely to | smile
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| If an animal has had its cerebrum removed, it cannot | live
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| The limbatic system | is a memory area in the mid brain
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| The central nervous system develops from a flat mass of tissue called the neural | tube
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| The size of various regions of the somatic sensory cortex is proportional to the ______ sensory receptors in the area of the body | number of
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| Which of the following functions is most likely to be preformed by the visual association area? | "recognizes" the face of a close friend
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| Damage to Wernicke's area would result in | "seeing stars"
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| If Broca's area is damaged, the result is | inability to think of things to say
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| A patient has suffered a cerebral hemorrhage that has damaged the primary motor area of his right cerebral cortex. As a result the | patient cannot voluntarily move his left arm or leg
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| Mike who is left handed decided to wear his favorite t-shirt to his anatomy class. On his t-shirt were the words "only left handed people are in their right minds" What does this statement mean? | This means that left handed people are controlled by the right side of the brain.
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| What does lateralization of cortical functioning mean? | we use both cerebral hemispheres for almost every activity, and the hemisphere appear nearly identical. there is a division of labor, and each hemisphere has a uniqueabilities not shared by its partner.
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