NERVOUS SYSTEM

Question 1

Nervous System

Answer 1

communication network within the body

Question 2

Central Nervous System

Answer 2

Brain & Spinal Cord; controls and interperets information

Question 3

Peripheral Nervous System (PNS)

Answer 3

Nerves connecting the CNS to the rest of the body/environment.

Question 4

PNS subdivisions

Answer 4

1. Somatic: Outer areas body and skeletal muscle; voluntary
2. Autonomic: involuntary systems (heart, digestion)

Autonomic Subdivisions:

Parasympathetic: decreases activation during rest & recovery.

Sympathetic: increases activation to prep for activity

Question 5

Neuron

Answer 5

functional unit of the nervous system

Question 6

Motor neurons (efferent)

Answer 6

Transmits nerve impulses from CNS to effector sites

Question 7

Sensory neurons (afferent)

Answer 7

Responds to stimuli; transmit nerve impulses from effector sites to CNS

Question 8

Mechanoreceptors

Answer 8

sense distortion in body tissues

Question 9

Joint Receptors

Answer 9

Respond to pressure, acceleration and deceleration of joints

Question 10

Golgi Tendon Organs

Answer 10

Sense changes in muscular tension

Question 11

Muscle Spindles

Answer 11

sense changes in muscle length