Nervous System

Question 1

What are the functions of the Nervous system? (4)

Answer 1

Receive stimuli, and produce a co-ordinated response
Convey electrical impulses from the brain to stimulate or depress activity
Unifies many different functions carried out by organs, tissues, and cells.
Maintains voluntary and Involuntary activities

Question 2

What are the components of the Central Nervous System (2)

Answer 2

Brain and Spinal Cord

Question 3

What 3 components make up the Peripheral Nervous System?

Answer 3

Somatic Nervous system
Autonomic Nervous system
Enteric Nervous system

Question 4

What are the functions of the Central Nervous System (5)

Answer 4

Integrates & correlates sensory information
Generates thoughts & emotions
Forms & stores memories
Initiates impulses for muscle contraction
Initiates impulses for gland secretion

Question 5

What is the role of the Somatic Nervous System (1)

Answer 5

Sends voluntary impulses to the Skeletal Muscle

Question 6

What is the role of the Autonomic Nervous System (1)

Answer 6

Involuntarily sends impulses to smooth muscle, cardiac muscle and glands.

Question 7

What is the role of the Enteric Nervous System

Answer 7

Involuntarily sends impulses to the Gastro-Intestinal Tract

Question 8

How does the nervous system respond to a stimulus?

Answer 8

Receptor detects a stimulus- change in the environment
Sensory neurone sends signal to relay neurone
Motor neurone sends signal to effector (E.G. Muscle)
Effector produces a response

Question 9

How many pairs of cranial nerves emerge from the brain?

Answer 9

12

Question 10

What 3 areas are regulated by the autonomic nervous system?

Answer 10

Smooth Muscle
Cardiac Muscle
Activities of Glands

Autonomic Nervous System is usually operated without conscious control and is regulated by control centres within the brain