Chp.2 - Basic Exercise Science - NS Flashcards

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1
Q

Human Movement System?

A
  • combination + interrelation of NERVOUS, MUSCULAR & SKELETAL SYSTEM.
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2
Q

Nervous system? (3) primary functions?

A
  • billions of CELLS that form COMMUNICATION NETWORK within human body.
  • SENSORY, INTEGRATIVE, MOTOR FUNCTIONS
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3
Q

Sensory function of NS?

A
  • ability of nervous system to SENSE CHANGES in EXTERNAL/INTERNAL environment
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4
Q

Integrative function of NS?

A
  • ability of NS to ANALYZE&INTERPRET sensory information to allow for proper decision making (ouch! hot!)
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5
Q

Motor function of NS?

A
  • NEUROMUSCULAR response to sensory information.
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6
Q

Neuron? (3) types?

A
  • FUNCTIONAL UNIT of NS

- SENSORY/AFFERENT, INTERNEURONS, MOTOR/EFFERENT

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7
Q

Sensory vs. interneuron vs. motor?

A
  • sensory: transmits nerve impulses from EFFECTOR SITES(muscles, organs…) to CNS
  • interneurons: TRANSFERS NERVE IMPULSES from one neuron to the other
  • motor: transmits info from CNS to effector sites.
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8
Q

CNS?

A
  • central nervous system: brain + spinal cord
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9
Q

PNS?

A
  • peripheral nervous system - CRANIAL/SPINAL nerves
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10
Q

Mechanoreceptor?

A
  • type of SENSORY neuron.
  • senses DISTORTION in BODY TISSUES.
    (senses touch, pressure, stretching, sound waves…; monitors position of
  • in muscles, tendons, ligaments, joint capsules…
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11
Q

Muscle spindle?

A
  • type of MECHANORECEPTOR.

- sensitive to change in LENGTH of the muscle and the RATE of that CHANGE.

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12
Q

Golgi Tendon organ? Activation?

A
  • type of MECHANORECEPTOR
  • located where skeletal muscle fibers insert into tendons.
  • sensitive to changes in MUSCULAR TENSION and RATE of TENSION CHANGE.
  • activation will cause muscle to RELAX, which prevents muscle from excessive stress/possibility of injury
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13
Q

Joint receptors? Responds to (3)?

A
  • receptors around joint that respond to PRESSURE, ACCELERATION and DECELERATION of the joint.
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14
Q

What must be linked together in order to produce movement?

A
  • the NERVOUS, SKELETAL and MUSCULAR SYSTEMS.
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