Lecture 3 - Structure of the nervous system

Question 1

What does the CNS consist of?

Answer 1

Brain and spinal cord

Question 2

What does the PNS consist of?

Answer 2

Nerves carrying information to and from the body, controlling muscles and organs

Question 3

What is a nerve?

Answer 3

Several axons running together

Question 4

What is the somatic nervous system?

Answer 4

Interacts with the external environment

Question 5

efferent nerves

Answer 5

carry motor signals from CNS to muscles

Question 6

afferent nerves

Answer 6

Carry sensory signals from sense organs

Question 7

What is the autonomic nervous system?

Answer 7

regulates the body’s internal environment

Question 8

What does the ANS consist of?

Answer 8

Sympathetic (activation) and Parasympathetic (resting) systems

Question 9

What does the spinal cord do?

Answer 9

Transmits information to and from the brain

• Simple and more complex reflexes

Question 10

What are the protective membranes in the brain?

Answer 10

Dura mater
Arachnoid layer
Pia mater

Question 11

What connects the 3rd and 4th ventricles?

Answer 11

Cerebral aqueduct

Question 12

What is the role of the medulla

Answer 12

Controls essential life functions

Question 13

What is the Pons

Answer 13

‘bridges’ the bump due to fibres crossing over from one side to the other

Question 14

What is the cerebellum

Answer 14

Co-ordination of movement

Question 15

What is the role of the tectum

Answer 15

produces orientating movements to sensory inputs

Question 16

What is the tegmentum

Answer 16

Groups of neurons with movement related functions

Question 17

What areas are found in the forebrain?

Answer 17

Diencephalon
Thalamus
Hypothalamus
Limbic system
Basal ganglia
cortex