Unit 3 - Division of the nervous system & neural pathways

Question 1

What is the CNS made up of?

Answer 1

Brain and spinal cord

Question 2

What is the PNS made up of?

Answer 2

Somatic and autonomic nervous systems

Question 3

Somatic nervous system…?

Answer 3

Takes messages from the sense organs along sensory neurons into CNS while motor neurons take impulses from CNS to motor neurons to muscles to glands

Question 4

Autonomic nervous system…?

Answer 4

Contains sympathetic and parasympathetic systems which are antagonistic to each other

Question 5

Sympathetic system…?

Answer 5

Prepares body for action by 1. Increasing HR 2. Increasing breathing rate by expanding bronchioles and decreasing peristalsis and production of intestinal secretions

Question 6

Converging neural pathway…?

Answer 6

Impulses from SEVERAL sources are channelled towards common destination

Question 7

Diverging neural pathway…?

Answer 7

impulses dividing allowing info to be transmitted to several destinations

Question 8

Reverberating neural pathway…?

Answer 8

neurons later in pathway form synapses with neurons earlier in pathway forming loop enabling it to be cycled