Chapter 3.1-3.3

Question 0

Describe the purpose and components of the meninges

Answer 0

1) duramater
2) arachnoid
3) piamater

Protect the CNS

Question 1

Describe the difference between afferent and efferent nerves

Answer 1

Afferent- carry sensory signals to the CNS

Efferent- carry motor signals from the CNS

Question 2

List the ventricles in the brain. What is contained within the ventricles?

Answer 2

Lateral ventricles (2)
Third ventricle
Fourth ventricle

Cerebrospinal fluid flows throughout the ventricles

Question 3

Describe the origin and route of cerebrospinal fluid.

Answer 3

Manufactured by the chroid pleuses

Capillary networks that protrude into ventricles

Circulate through the ventricle system of central canal of the brain subarachnoid space spinal cord

It is absorbed into large channels (sinuses) in the duramater and then into the blood stream

Question 4

What is the difference between tracts and nerves?

Answer 4

Tracts= CNS bundles of axons

Nerves= PNS bundles of axons

Question 5

The metabolic center of the neuron is called

Answer 5

Cell body or soma

Question 6

Which part of the neuron contains DNA?

Answer 6

Nucleus

Question 7

Define dendrite

Answer 7

The short processes emanating from the cell body, which receives most of the synaptic contacts from other neurons.

Question 8

Define axon

Answer 8

The long, narrow process that projects from the cell body.

Question 9

Define buttons

Answer 9

The button like endings of the axon branches, which release chemicals signals are transmitted.

Question 10

Define synapse

Answer 10

The gaps between adjacent neurons across which chemicals signals are transmitted.