Lesson 1 - The Nervous System

Question 1

What is the nervous system broken down into?

Answer 1

The Central Nervous System
The Peripheral Nervous System

Question 2

What is the Central Nervous System?

Answer 2

Receives, processes and responds to sensory information

Made up of:

• The brain
• Spinal cord

Question 3

What is the Peripheral Nervous System?

Answer 3

Transmits messages via neurons to and from the CNS

Made up of:

• The Autonomic System
• The Somantic Nervous System

Question 4

What is the Autonomic Nervous System?

Answer 4

Governs vital functions like breathing, heart rate, digestion, sexual arousal and stress responses (involuntary actions)

Question 5

What is the Somantic Nervous System?

Answer 5

Facilitates communication between the CNS and the outside world. Made up of sensory receptors that carry information

Made up of 12 pairs of cranial nerves and 31 pairs of spinal nerves.

Responsible for voluntary movements

Question 6

What is the Autonomic Nervous System split into?

Answer 6

The Sympathetic Nervous System
The Parasympathetic Nervous System

Question 7

What is the Sympathetic Nervous System?

Answer 7

Helps us deal with emergencies such as the fight or flight response. Nerves from this system travel to almost every organ and gland in the body.

Question 8

What is the Parasympathetic Nervous System?

Answer 8

After an emergency response has been issued and the emergency is resolved, the parasympathetic nervous system calms the body back down again. Your body returns to its normal state

Question 9

The Cerebellum

Answer 9

• Sits at the back of the cerebrum
• Controls motor skills and balance

Question 10

The Cerebrum

Answer 10

• Largest part of the brain

Divided into four lobes:

• Parietal Lobe
• Frontal Lobe
• Temporal Lobe
• Occipital Lobe

Split into two hemispheres that communicate via the corpus callosum

Question 11

The Diencephalon

Answer 11

• Sits just above the brain stem

Made up of:

• Thalamus
• Hypothalamus
• Epithalamus
• Subthalamus
• Involved in coordinating the endocrine system, releasing hormones, relaying sensory and motor signals
• It also regulates circadian rhythms

Question 12

The brain stem

Answer 12

• Responsible for regulating automatic functions, like breathing, heartbeat and swallowing. Motor and sensory neurons travel through the brain stem and allow impulses to pass between the brain and spinal cord