Lesson 1: The nervous system

Question 1

What does the nervous system consist of?

Answer 1

Central nervous system (CNS)
Peripheral nervous system (PNS)

Question 2

What does the central nervous system consist of? (CNS)

Answer 2

BRAIN + SPINAL CORD

Question 3

What are the two main functions of the CNS

Answer 3

1) CONTROL of BEHAVIOUR

2) REGULATION of the body’s PHYSIOLOGICAL processes

Question 4

How does the CNS regulate physiological processes?

Answer 4

brains receives information from SENSORY RECEPTORS and sends the information to EFFECTORS (muscles, glands)=carry out response

Question 5

What are the 4 main areas of the brain
(Corbyn Can Dunk Better)

Answer 5

Cerebrum
Cerebellum
Diencephalon
Brain stem

Question 6

Describe the cerebrum

Answer 6

-largest part of the brain
-consists of 4 lobes
- is split into two halves-> right hemisphere and left hemisphere

Question 7

Describe the cerebellum
(sarah loves motor)

Answer 7

-responsible for motor skills
-balance+ co-ordination of muscles to allow precise movements

Question 8

Describe the dincephalon

Answer 8

-contains the thalamus (which regulates consciousness, sleep + alertness)

-contains the HYPOTHALAMUS (regulates body temp, stress, hunger + thirst response)

Question 9

Describe the brain stem

Answer 9

regulates breathing + heart rate

Question 10

What is the main function of the spinal cord

Answer 10

relays information FROM the BRAIN to the rest of the body-> allowing the brain to regulate bodily processes e.g digestion + breathing

Question 11

How is the spinal cord connected to different parts of the body

Answer 11

via spinal nerves which connect to specific muscles + glands

Question 12

What happens if the spinal cord is damaged

Answer 12

the muscle and glands connected to the spinal cord via the spinal nerve will stop functioning

Question 13

What is the peripheral nervous system? (PNS)

Answer 13

the NETWORK of NERVES throughout the rest of the body

Question 14

What are the two divisions of the PNS

Answer 14

1) Somatic nervous system
2) Autonomic nervous system

Question 14

What is the function of the PNS

Answer 14

transmits messages via neurons TO and FROM the CNS (brain+ spinal cord)

Question 15

What does the Somatic nervous System control?

Answer 15

Voluntary movements

Question 16

Is the somatic nervous system under conscious control or UNconscious control

Answer 16

CONSCIOUS control

Question 17

What type of muscles does the somatic nervous system control

Answer 17

SKELETAL muscles

Question 17

What type of pathways does the somatic nervous system have?

Answer 17

SENSORY and MOTOR

Question 18

What is the SNS controlled by

Answer 18

MOTOR cortex

Question 18

What type of movement is the AUTONOMIC nervous system responsible for?

Answer 18

INVOLUNTARY movement

Question 18

What type of control is the Autonomic nervous system under?

Answer 18

UNconscious control

Question 19

What type of muscle does the ANS control

Answer 19

SMOOTH muscle

Question 19

What are the pathways involved in the Autonomic nervous system

Answer 19

MOTOR pathways (ONLY)

Question 20

What are the two divisions of the ANS

Answer 20

SYMPATHETIC nervous system
PARASYMPATHETIC nervous system

Question 21

What is the SYMPATHEIC nervous system responsible for?

Answer 21

FIGHT or FLIGHT
(increased heart rate, pupils dilate, digestion stops)

Question 22

What is the PARASYMPATHETIC nervous system responsible for?

Answer 22

REST and DIGEST
(heart rate + breathing rate REDUCE, digestion starts, pupils constrict)