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Exercise Physiology > Nervous System > Flashcards

Nervous System Flashcards

1
Q

Function of Nervous System

A

Controls the internal environment
Voluntary control of movement
Provides sensory info
Programming spinal cord reflexes
Memory and learning

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2
Q

Cell body

A

integrates info

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3
Q

Dendrites

A

impulses towards cell body

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4
Q

Axon

A

impulse away from cell body
covered with Schwann cells and forms myelin sheath

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5
Q

Synapse

A

contact points b/t axon of one neuron and dendrite of another

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6
Q

Excitatory transmitter

A

cause depolarization

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7
Q

Inhibitory transmitter

A

cause hyperpolarization

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8
Q

Norepinephrine neurotransmitter

A

found in PNS and CNS, Excess: associated with mania, Low: depression

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9
Q

Dopamine

A

found in CNS, Attention, Emotional behavior, Addictive behavior, parkinsons

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10
Q

Serotonin

A

found in PNS and CNS, linked with depression and irregulates circadian rhythm

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11
Q

Osmoreceptors

A

hydration/concentration

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12
Q

Baroreceptors

A

respond to pressure changes in blood vessels

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13
Q

Proprioceptors

A

provide CNS information about body position and joint angle

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14
Q

Muscle chemoreceptors

A

provide CNS info on metabolic rate of muscular activity, sensitive to chemical changes

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15
Q

Reflexes order of events

A

Afferent
interneurons in spinal cord activate motor neurons
efferent

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16
Q

Reciprocal inhibition

A

agonist contracts
antagonist relaxes

17
Q

Muscle spindle

A

detect rate of change in muscle length
stretch reflex

18
Q

Golgi Tendon Organs

A

monitors tension in muscle
prevents damage during excessive force generation

19
Q

Vestibular apparatus

A

located in inner ear
maintains equilibrium and balance
sensitive to angular and linear accelerations

20
Q

Somatic motor neurons of PNS

A

carry messages from brain/spinal cord to muscle (efferent)

21
Q

Innervation ratio

A

number of muscle fibers per motor neuron

22
Q

Brain Stem

A

Controls CV and respiratory system

23
Q

Cerebrum

A

cerebral cortex
motor cortex

24
Q

cerebral cortex

A

organizes complex move
storage of learned experiences
reception of sensory info

25
Q

motor cortex

A

voluntary movement

26
Q

cerebellum

A

monitoring complex movement

Exercise Physiology (6 decks)

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