6.1: The peripheral nervous system (PNS)

Question 1

The PNS extends beyond the CNS and does what?

Answer 1

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa

Question 2

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
What is the peripheral nervous system (PNS) divided into?

Answer 2

The peripheral nervous system (PNS) is divided into:

1. The somatic nervous system
2. The autonomic nervous system

Question 3

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
What does the somatic nervous system do?

Answer 3

The somatic nervous system controls muscle movement and receives information from sensory receptors

Question 4

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
The somatic nervous system controls muscle movement and receives information from sensory receptors, like what?

Answer 4

The somatic nervous system controls muscle movement and receives information from sensory receptors, like:

1. Visual information from the eyes
2. Auditory information from the ears

Question 5

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
What does the autonomic nervous system do?

Answer 5

The autonomic nervous system governs vital functions in the body

Question 6

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system governs vital functions in the body, such as what?

Answer 6

The autonomic nervous system governs vital functions in the body, such as:

1. Breathing
2. Heart rate
3. Digestion
4. Sexual arousal
5. Stress responses

Question 7

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system governs vital functions in the body, such as breathing, heart rate, digestion, sexual arousal and stress responses.
The autonomic nervous system transmits information to and from internal bodily organs.
Why is it ‘autonomic’?

Answer 7

It is ‘autonomic,’ because the system operates involuntarily (it is automatic)

Question 8

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system governs vital functions in the body, such as breathing, heart rate, digestion, sexual arousal and stress responses.
The autonomic nervous system transmits information to and from internal bodily organs.
It is ‘autonomic,’ because the system operates involuntarily (it is automatic).
What is the autonomic nervous system further divided into?

Answer 8

The autonomic nervous system is further divided into:

1. The sympathetic nervous system
2. The parasympathetic system

Question 9

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system governs vital functions in the body, such as breathing, heart rate, digestion, sexual arousal and stress responses.
The autonomic nervous system transmits information to and from internal bodily organs.
It is ‘autonomic,’ because the system operates involuntarily (it is automatic).
The autonomic nervous system is further divided into the sympathetic nervous system and the parasympathetic system.
What does the sympathetic nervous system do?

Answer 9

The sympathetic nervous system generally increases bodily activities

Question 10

The PNS extends beyond the CNS and transmits messages, via millions of neurons (nerve cells), to the whole body from the brain and vice versa.
The peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system governs vital functions in the body, such as breathing, heart rate, digestion, sexual arousal and stress responses.
The autonomic nervous system transmits information to and from internal bodily organs.
It is ‘autonomic,’ because the system operates involuntarily (it is automatic).
The autonomic nervous system is further divided into the sympathetic nervous system and the parasympathetic system.
What does the parasympathetic nervous system do?

Answer 10

The parasympathetic nervous system conserves the body’s natural activity levels by decreasing activity or maintaining it

Question 11

What neurons are involved in the autonomic nervous system?

Answer 11

Motor neurons are involved in the autonomic nervous system

Question 12

Motor neurons are involved in the autonomic nervous system.

Why are only one type of neuron involved in the autonomic nervous system?

Answer 12

Only one type of neuron are involved in the autonomic nervous system, because it is involuntary as it is an automatic response

Question 13

Motor neurons are involved in the autonomic nervous system.
Only one type of neuron are involved in the autonomic nervous system, because it is involuntary as it is an automatic response.

What neurons are involved in the somatic nervous system?

Answer 13

Sensory and motor neurons are involved in the somatic nervous system

Question 14

Motor neurons are involved in the autonomic nervous system.
Only one type of neuron are involved in the autonomic nervous system, because it is involuntary as it is an automatic response.

Sensory and motor neurons are involved in the somatic nervous system.
Why are two types of neurons involved in the somatic nervous system?

Answer 14

Two types of neurons are involved in the somatic nervous system, because it receives, but also sends information

Question 15

Sensory neurons receive information from the what?

Answer 15

Sensory neurons receive information from the senses

Question 16

Sensory neurons receive information from the senses.

Example

Answer 16

For example, a pin prick on your finger is felt by your sensory neurons first