Chp.2 - Basic Exercise Science - NS Flashcards
1
Q
Human Movement System?
A
- combination + interrelation of NERVOUS, MUSCULAR & SKELETAL SYSTEM.
2
Q
Nervous system? (3) primary functions?
A
- billions of CELLS that form COMMUNICATION NETWORK within human body.
- SENSORY, INTEGRATIVE, MOTOR FUNCTIONS
3
Q
Sensory function of NS?
A
- ability of nervous system to SENSE CHANGES in EXTERNAL/INTERNAL environment
4
Q
Integrative function of NS?
A
- ability of NS to ANALYZE&INTERPRET sensory information to allow for proper decision making (ouch! hot!)
5
Q
Motor function of NS?
A
- NEUROMUSCULAR response to sensory information.
6
Q
Neuron? (3) types?
A
- FUNCTIONAL UNIT of NS
- SENSORY/AFFERENT, INTERNEURONS, MOTOR/EFFERENT
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.
8
Q
CNS?
A
- central nervous system: brain + spinal cord
9
Q
PNS?
A
- peripheral nervous system - CRANIAL/SPINAL nerves
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…
11
Q
Muscle spindle?
A
- type of MECHANORECEPTOR.
- sensitive to change in LENGTH of the muscle and the RATE of that CHANGE.
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
13
Q
Joint receptors? Responds to (3)?
A
- receptors around joint that respond to PRESSURE, ACCELERATION and DECELERATION of the joint.
14
Q
What must be linked together in order to produce movement?
A
- the NERVOUS, SKELETAL and MUSCULAR SYSTEMS.
