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bhsc 1200 final exam practice questions and answers (100% pass) organization of nervous system - ️️ 1) central nervous system = brain and spinal cord -processes many different kinds of incoming sensory information -source of thoughts, emotions and memories -produces signals causing muscles ...

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  • August 14, 2024
  • 149
  • 2024/2025
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©PREP4EXAMS@2024/2025 [REAL-EXAM-DUMPS] Sunday, August 4, 2024 12:41 AM



WEST VIRGINIA UNIVERSIRTY- (WV) : 26506

bhsc 1200 final exam practice questions and answers (100% pass)


organization of nervous system - ✔️✔️1) central nervous system = brain and spinal cord


-processes many different kinds of incoming sensory information


-source of thoughts, emotions and memories


-produces signals causing muscles to contracts and glands to secrete




2) peripheral nervous system = consists of all nervous tissue outside the CNS


-further divided into sensory (afferent) division [provides information about somatic

senses] and motor (efferent) division [conveys output from CNS to effectors]


-efferent division is further divided: somatic nervous system (conveys output from CNS

to skeletal muscle) and autonomic nervous system (conveys output from CNS to

smooth muscle, cardiac muscle, and glands)


-autonomic nervous system is further divided: sympathetic nervous system and

parasympathetic nervous system (usually have opposing actions)


functions of nervous system - ✔️✔️-sensory function: sensory receptors detect internal

stimuli; sensory information is carried to brain and spinal cord




1

,©PREP4EXAMS@2024/2025 [REAL-EXAM-DUMPS] Sunday, August 4, 2024 12:41 AM



WEST VIRGINIA UNIVERSIRTY- (WV) : 26506
-integrative function: nervous system processes sensory information by analyzing it and

making decisions


-motor function: nervous system activates effectors causing muscles to contract and

glands to secrete


parts of a neuron - ✔️✔️-cell body: contains a nucleus surrounded by cytoplasm which

includes organelles


-dendrite: receiving or input portions


-axon: long, thin, cylindrical projection; propagates nerve impulses toward another

neuron


-axon hillock: cone shaped elevation; joins axon to cell body


-trigger zone: junction of axon hillock and initial segment; generates nerve impulses

which travel along the axon to their destination


-axon terminal: numerous fine processes originating from the axon


-synaptic bulb: bulb-shaped swellings of the tips of axon terminals; contain synaptic

vesicles that store neurotransmitters


structural classification of neurons - ✔️✔️-multipolar: have several dendrites and one

axon; brain and spinal cord




2

,©PREP4EXAMS@2024/2025 [REAL-EXAM-DUMPS] Sunday, August 4, 2024 12:41 AM



WEST VIRGINIA UNIVERSIRTY- (WV) : 26506
-bipolar: one main dendrite and one axon; retina of eye, inner ear, olfactory area of

brain


-unipolar: have dendrites and one axon that are fused together to form a continuous

process that emerges from the cell body; function as sensory receptors


functional classification of neurons - ✔️✔️-sensory: afferent neurons; either contain

sensory receptors at their distal ends or are located just after sensory receptors that are

separate cells; forms action potentials; most are unipolar




-motor: efferent neurons; convey action potentials away from CNS to effectors; most are

multipolar




-interneurons: association neurons; mainly located within CNS between sensory and

motor neurons; process incoming sensory information and elicit motor response by

activating motor neurons; most are multipolar


characteristics and function of astrocytes - ✔️✔️-most abundant, versatile, and highly

branched glial cells


-cling to neurons, synaptic endings, and capillaries




3

, ©PREP4EXAMS@2024/2025 [REAL-EXAM-DUMPS] Sunday, August 4, 2024 12:41 AM



WEST VIRGINIA UNIVERSIRTY- (WV) : 26506
-functions: support and brace neurons; play role in exchanges between capillaries and

neurons through BBB; guide migration of young neurons; respond to nerve impulses

and neurotransmitters; influence neuronal functioning


characteristics and function of microglia - ✔️✔️-small, ovoid cells with thorny processes

that touch and monitor neurons


-migrate toward injured neurons


-can transform to phagocytize microorganisms and neuronal debris


characteristics and function of ependymal cells - ✔️✔️-range in shape from squamous to

columnar


-may be ciliated (cilia beat to circulate CSF)


-line the central cavities of the brain and spinal column


characteristics and function of oligodendrocytes - ✔️✔️-branched cells


-processes wrap CNS nerve fibres, forming insulating myelin sheaths thicker nerve

fibres


myelin sheath - ✔️✔️lipid protein material that acts as an insulator of nerve cells and

speeds up nerve conduction


structure and function of satellite cells - ✔️✔️-cover surface of nerve cell bodies


-regulation of extracellular environment of PNS neurons


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