Nervous system: Structure & Function

Question 1

What are the 2 types of cells in the nervous system?

Answer 1

Neurons and Neuroglial cells

Question 2

What are the 3 components of a neuron?

Answer 2

Dendrite, Cell Body, and Axon

Question 3

Name 3 structural functions of neuroglial cells

Answer 3

Support, nourish, and insulate

Question 4

Explain Conduction Velocity

Answer 4

The rate at which neurons transmit a message from one end of the neuron, to the other

Question 5

How are messages transmitted between neurons?

Answer 5

Neurotransmitters

Question 6

What is a Synapse?

Answer 6

The connection between 2 neurons where transmission occurs

Question 7

What is Action Potential?

Answer 7

Transmission from one end of the neuron, to the other end

Question 8

What are the components of the CNS?

Answer 8

Brain and Spinal Cord

Question 9

Your peripheral nervous system consists of…

Answer 9

Cranial Nerves and Spinal Nerves

Question 10

How many pairs of cranial nerves are there?

Answer 10

12

Question 11

How many pairs of spinal nerves are there?

Answer 11

31

Question 12

What are the 4 main divisions of the Brain?

Answer 12

Cerebrum, Diencephalon, Cerebellum, and Brainstem

Question 13

What consists of the Cerebrum?

Answer 13

Cerebral Hemispheres and Basal Ganglia

Question 14

What consists of the Dienchephalon?

Answer 14

Thalamus and Hypothalamus

Question 15

What are the 3 components of the Brainstem?

Answer 15

Midbrain, Pons, and Medulla

Question 16

Where do PNS Spinal Nerves meet with the CNS?

Answer 16

Spinal Cord

Question 17

Where do PNS Cranial Nerves meet with the CNS?

Answer 17

Brainstem

Question 18

What are the 2 subdivisions of the PNS?

Answer 18

Autonomic and Somatic

Question 19

What is the purpose of the efferent Somatic Nervous System?

Answer 19

Transmits motor neurons to innervate muscles

Question 20

What is the purpose of the afferent Somatic Nervous System

Answer 20

Sensory neurons that carry information back to the CNS.

Question 21

What are the 2 subdivisions of the Autonomic Nervous System?

Answer 21

Sympathetic and Parasympathetic

Question 22

What is the function of the Sympathetic Nervous System?

Answer 22

Fight or flight - prepares body for physical activity or stress related situations.

Question 23

What is the function of the Parasympathetic Nervous System?

Answer 23

Rest and digest - conserves bodies energy/