Chapter 14: Intro to the nervous system

Question 1

The two main structural divisions of the nervous system are?

Answer 1

1. Central
2. Peripheral

Question 2

The Central Nervous system (CNS) includes…

Answer 2

• Brain
• Brainstem
• Spinal cord

Question 3

Peripheral Nervous system (PNS) includes…

Answer 3

• Crainal nerves (attached to the brain/brainstem)
• Spinal nerves (attached to spinal cord)

take note that these are the ones that carry informaton too and from the CNS.

Question 4

The sensory nervous system serves what purpose?

Answer 4

Transmits information from receptors to the CNS

Question 5

The motor nervous system serves what prupose?

Answer 5

Transmits information from CNS to the rest of the body.

Question 6

The sensory nervous system can be further broken down into…

Answer 6

• Somatic Sensory
• Visceral Sensory

Question 7

The somatic sensory serves what purpose?

Answer 7

Receptors that recieve information from the skin, fascia, joints, skeletal muscles, and special tissues.

Question 8

The function of the visceral sensory is to…

Answer 8

recieve sensory information from the viscera (organs).

Question 9

The function of the somatic motor neurons is to..

Answer 9

Voluntary nervous signals sent out to the skeletal muscles.

Question 10

Autonomic nervous system function is…

Answer 10

“Involuntary” nervous system which innervates cardiac muscle, smooth muscle, glands.

Question 11

The two main classifications of cells are…

Answer 11

1. Neurons
2. Glial Cells

Question 12

Neurons serve to…

Answer 12

Generate and carry electricla signals

Question 13

Glial cells serve to…

Answer 13

Perform various supportive functions such as…

• protect neurons
• Regulat ionic balance in tissue
• Immune functions

Question 14

Dendrites serve what functional purpose?

Answer 14

Dendrites serve as the “recieving end” of the neuron in that they make connections with and recieve signals from other neurons and from receptors.

Question 15

Function purpose of the soma

Answer 15

This is where the signal is interpreted/integrated along with other cellular functions.

Question 16

Axon serves the purpose of…

Answer 16

Signal transmission; this means that it is the axon in which the signal travels down and passes the signal on to other cells.

Question 17

Axons communicate with other neurons, muscles, glands, etc., by releasing compounds known as..

Answer 17

Neurotransmitters

Question 18

Number 3 in this picture are neurons found in the CNS and lie either in-between two neurons such as sensory-motor, etc.

Answer 18

Internerons

Question 19

Identify number 1 in this photo

Answer 19

Dendrites

Question 20

Identify number 2 in this photo

Answer 20

Axon Hillock

Question 21

Number 3 is the…

Answer 21

Soma (Cell Body)

Question 22

Number 4 in this photo is the region which tramsits the electrical signal towards the terminals

Answer 22

Axon

Question 23

Number 5 serves as the final point in the transduction of the propogation of the neural electrical signal and is where neurotransmitter chemicals are released from

Answer 23

Synaptic Terminals

Question 24

Structurally, this is known as a…

Answer 24

Bipolar neuron

Question 25

Structurally, this is known as what type of neuron…?

Answer 25

Unipolar

Question 26

Structurally this is what type of neuron?

Answer 26

Multipolar