Divisions of the Nervous System and Parts of the Brain Flashcards Preview

Human Biology Unit 3 > Divisions of the Nervous System and Parts of the Brain > Flashcards

Flashcards in Divisions of the Nervous System and Parts of the Brain Deck (17)
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1

What is the Central Nervous System (CNS) made up of?

The brain and the spinal cord.

2

What does the Peripheral Nervous System (PNS) consist of?

The peripheral nerves, the somatic nervous system (SNS) and the autonomic nervous system (ANS).

3

What does the SNS control?

Voluntary actions by skeletal muscles.

4

What does the ANS control?

Involuntary actions by glands, smooth muscle and cardiac muscle.

5

What does the autonomic nervous system (ANS) consist of?

Sympathetic and parasympathetic nervous systems which have fibres that are antagonistic to each other.

6

What do sympathetic fibres do?

Speed heart and breathing rates but slow digestive processes such as the secretion of digestive juices and peristalsis.

7

What do parasympathetic fibres do?

Slow heart and breathing rates but speed up digestive processes such as the secretion of digestive juices and peristalsis.

8

What does the cerebellum do?

The cerebellum has centres that control balance and coordination.

9

What is the role of the medulla?

The medulla has centres which control breathing, heart rate and peristalsis.

10

What is the role of the limbic System?

The limbic System has a role in long-term memory, emotion and behaviour.

11

How is the cerebrum divided?

The cerebrum is divided into the left and right hemispheres.

Information from one side of the body is processed by the cerebral hemisphere that is located on the other side.

12

How is the cerebral cortex divided?

The cerebral cortex is divided into localised regions including sensory, motor and association areas.

13

What is the role of the cerebral cortex?

The cerebral cortex receives sensory information, is involved with decision making in light of experience and coordinates voluntary movement.

14

What does the sensory area of the brain do?

The sensory are receives impulses from the skin, organs and muscle.

15

What does the motor area do?

The motor area send impulses to the skeletal muscles.

16

What are the functions of the association areas of the brain?

There are association areas concerned with language, personality, imagination and intelligence.

17

What is the role of the corpus callosum?

The corpus callosum transfers information between the two cerebral hemispheres.