Organization of the Nervous System

Question 1

What is the sensory function of the nervous system?

Answer 1

Detecting stimuli (internal or external)

Question 2

What is the integration function of the nervous system?

Answer 2

Processing
Decision Making

Question 3

What is the motor function of the nervous system?

Answer 3

Contractions
Gland Secretion

Question 4

What are the three functional systems of the nervous system?

Answer 4

Sensory (afferent)
Integrative (interneuron)
Motor (efferent)

Question 5

What are 4 motor signals

Answer 5

Somatic
Autonomic

Question 6

What are the three types of autonomic signals?

Answer 6

Sympathetic
Parasympathetic
Enteric

Question 7

What does the somatic signal do?

Answer 7

Voluntary control
ex) moving your skeletal muscle

Question 8

What do the autonomic signals do?

Answer 8

These are automatic movements or unvoluntary

Question 9

What does the sympathetic signal do?

Answer 9

fight or flight response

Question 10

What does the parasympathetic signal do?

Answer 10

Resting functions
Ex) Reproductive responses

Question 11

What does the enteric signal do?

Answer 11

Specifically the digestive system

Question 12

What does the central nervous system consist of?

Answer 12

Brain and spinal cord.
Performs integration

Question 13

What does the peripheral nervous system consist of?

Answer 13

Ganglion and nerves

Question 14

What two kinds of systems for the peripheral nervous system consist of?

Answer 14

Sensory system
Motor system

Question 15

What are the two cells types in the nervous tissue?

Answer 15

Neruons
Neuroglia

Question 16

What does the cell body in the neurons consist of?

Answer 16

Organelles
Nucleus
Cytoplasm

Question 17

What do the dendrites in the neurons perform?

Answer 17

They receive input signals

Question 18

What do the axons in the neurons perform?

Answer 18

They are the long, singular branches for output

Question 19

What does the synapse in the neurons do?

Answer 19

It is the site of communication between neurons/cells

Question 20

What are the three structural classifications of neurons?

Answer 20

Unipolar neuron
Bipolar neuron
Multipolar neuron

Question 21

What is the myelin sheath?

Answer 21

The lipid/protein covering an axon

Question 22

What else does the myelin sheath provide for the nerves?

Answer 22

Insulates
Speeds up nerve impulses

Question 23

What are the two types of myelination?

Answer 23

Grey matter
White matter

Question 24

What does the grey matter consist of?

Answer 24

Primarily cell bodies
Processing or slow signaling

Question 25

What does the white matter consist of?

Answer 25

Contains primarily axons (myelinated)
Fast signaling

Question 26

What is the neuroglia?

Answer 26

They are support cells
These are 10-25x more abundant than neurons

Question 27

What are the roles of astrocytes/satellite cells?

Answer 27

Support
Blood-Brain barrier
Nutrient passage

Question 28

What are the roles of oligodendrocytes/Schwann cells?

Answer 28

Form myelin sheath (support)

Question 29

What is the role of microglia cells?

Answer 29

Surveillance for infection/damage

Question 30

What is the role of ependymal cells?

Answer 30

Line ventricles
Filter blood to produce cerebrospinal fluid
Ciliated