Nervous System

Question 1

What are the two divisions of the nervous system

Answer 1

Central nervous system
Peripheral nervous system

Question 2

Central nervous system

Answer 2

Brain and spinal chord
“Headquarters”
Constantly receives input
Decides what the response should be

Question 3

Peripheral nervous system

Answer 3

Sensory and motor neurons
Outside CNS
Signals CNS
Senses info and causes the response

Question 4

What is a neuron

Answer 4

Nerve cell
Transmits info throughout the body chemically and electrically

Question 5

The three parts of the neuron

Answer 5

Dendrites, cell body, axon

Question 6

Multiple sclerosis

Answer 6

A progressive disease that damages nylon sheaths
Slows down nerve signals

Question 7

Types of neurons

Answer 7

Sensory neurons PNS
Interneurons CNS
Motor neurons PNS

Question 8

Sensory neurons

Answer 8

Located in the PNS
Gather info from sensory receptors, send to the CNS

Question 9

Interneurons

Answer 9

Located in the CNS
Process and integrate info
Give back to motor neurons

Question 10

Motor neurons

Answer 10

Located in the PNS
Transmits info to muscles, glands and other organs

Question 11

Reflex arc

Answer 11

Controlled by the spinal chord
1. Sensory receptors
2. Sensory neurons (afférent)
3. Interneuron
4. Motor neuron ( efferent)
5. Effector ( muscles)