C03 - The Nervous System

Question 1

The basic component of the Nervous System is a cell called?

Answer 1

A Neuron.

Question 2

Define an Axon?

Answer 2

The means of carrying signals to a distant cell.

Question 3

What are the two types of Neurons?

Answer 3

• Motor Neuron.

- Sensory Neuron.

Question 4

‘____’ carry signals from the brain?

Answer 4

Motor Neurons.

Question 5

‘____’ carry signals from various parts of the body?

Answer 5

Sensory Neurons.

Question 6

Neurons transmit ‘____’ as a series of ‘____’ travelling along the length of the ‘____’ (3)?

Answer 6

• Signals.
• Electrical Pulses/Waves.
• Axon.

Question 7

What kind of process is Nerve Signalling?

Answer 7

Electro-Chemical.

Question 8

What’s the speed of transmission in Neurons?

Answer 8

0.5 metres per second.

Question 9

What’s the speed of transmission in Long Motor Neurons?

Answer 9

100 metres per second.

Question 10

Name the two parts of the Nervous System?

Answer 10

• Central Nervous System.

- Peripheral Nervous System.

Question 11

What does the CNS comprise of?

Answer 11

Brain and Spinal Chord.

Question 12

Name the fluid which fills the spaces between the Skull and Brain and the Spinal Chord and its purpose (2)?

Answer 12

• Cerebrospinal Fluid.

- Supports and protects the Brain from shocks.

Question 13

Name the three divisions of the PNS?

Answer 13

• Somatic Nervous System.
• Autonomic Nervous System.
• Enteric Nervous System.

Question 14

What is the Somatic Nervous System responsible for?

Answer 14

Body movement and sensing the external stimuli.

Question 15

What is the Autonomic Nervous System responsible for?

Answer 15

Operations of internal organs and control of blood supply.

Question 16

Name the two divisions in the Autonomic Nervous System?

Answer 16

• Sympathetic Division.

- Parasympathetic Division.

Question 17

What are the responsibilities of the Sympathetic and Parasympathetic Divisions (2)?

Answer 17

• Sympathetic is responsible for preparing the body for action.
• Parasympathetic is responsible for returning the body back to normal.

Question 18

What is the Enteric Nervous System responsible for?

Answer 18

Controls the activities and functions of the gut.

Question 19

Where are Proprioceptors located?

Answer 19

Inside the muscles.

Question 20

Where are the Mechanoreceptors located?

Answer 20

Inside the tendons.

Question 21

What are Pressure Receptors?

Answer 21

Sense how much pressure is being exerted on the surface of the body.

Question 22

What is the Endocrine System?

Answer 22

A chemical messenger system which is secreted into the blood stream.