Nervous System

Question 0

Peripheral nervous system

Answer 0

Neural tissue outside the CNS (nerves)
Delivers sensory information to the CNS
Carly’s motor commands to peripheral tissues

Question 1

Central nervous system

Answer 1

Brain and spinal cord

Responsible for integrating, processing, coordinating

Question 2

Afferent division

Answer 2

Sensory information to the CNS from receptors in the PNS

Question 3

Efferent Division

Answer 3

Motor commands from the CNS to PNS
2-sub divisions:
Somatic: voluntary control of the body
Autonomic: automatic, involuntary

Question 4

Soma

Answer 4

Cell body

Directs neuron activities

Question 5

Dendrites

Answer 5

Sensitive processes
Extends from soma
Receive neural impulses

Question 6

Axon

Answer 6

Starts from bottom of soma to axon terminal
Long cytoplasmic process
Transmit neural impulses away from cell body

Question 7

Synaptic terminal

Answer 7

Presynaptic cell

Sends a message to another neuron

Question 8

Myelin sheath

Answer 8

Protects and insulates axon, aids movement of impulses

Question 9

Sensory neurons

Answer 9

Afferent division

Deliver information from sensory receptors to the CNS

Question 10

Motor neuron

Answer 10

Efferent division

Carry instructions from CNS to peripheral effectors

Question 11

Synapse

Answer 11

Site of intercellular communication

2 cells: presynaptic cell (sends message), post synaptic cell (receives message)

Question 12

Neuroeffector junction

Answer 12

Synapse between a neuron and another cell type

Neuromuscular junction: neuron and muscle

Question 13

Neurotransmitters

Answer 13

Facilitate neural communication

Chemical released by synaptic terminal

Question 14

Neural chains

Answer 14

Several neurons linked together to transmit messages over long distances

Question 15

Proprioception

Answer 15

Awareness of the position of bones, joints, muscles

Question 16

Reflexes

Answer 16

Rapid, automatic response to stimuli

Question 17

Neural reflexes

Answer 17

Involves sensory and motor neurons

Pathway that bypasses the brain to produce a quick response

Question 18

Reflex arc

Answer 18

Stimulus activates a sensory neuron, sends message to spinal cord (interneuron) which sends message to motor neuron to respond to stimuli

Question 19

Functions

Answer 19

Sensory nerves gather information and send it to the CNS
This is then processed and interpreted
Motor nerves convey information from the CNS to the muscles and glands

Question 20

Anatomical divisions

Answer 20

Central nervous system

Peripheral nervous system

Question 21

Functional divisions

Answer 21

Afferent division

Efferent division

Question 22

Types of neurons

Answer 22

Sensory
Motor
Interneurons