Exam 3 Prep

Question 1

List the function of nervous system:

Answer 1

Controls Center
Communication
Sensing
Effector Responce
Movement

Question 2

What does the Control Center do?

Answer 2

-Integrates and interprets information

-Generates appropriate response for particular stimuli

Question 3

What does the Communication function of the nervous system do?

Answer 3

One of two systems the body uses for long-distance communication (the other is endocrine)

Question 4

What does sensing of the nervous system do?

Answer 4

The nervous system is responsible for all sensing of the internal and external environment.

Question 5

Effector responses

Answer 5

Stimulates and coordinates effector responses

Question 6

Movement

Answer 6

Initiates and coordinates voluntary and involuntary muscle movement.

Question 7

Organization of the nervous system

First two:

Answer 7

Central Nervous System and Peripheral Nervous system

Question 8

Organization of the nervous system

Central Nervous System

Answer 8

Brain and Spinal Cord

Question 9

Organization of the Nervous Systme

Peripheral Nervous Systme

Answer 9

Sensory division (afferent) and Motor Division (Efferent)

Question 10

Organization of the Nervous System

Sensory Division (afferent)

Answer 10

-Somatic sensory division

-Visceral sensory division (autonomic)

Question 11

Organization of the nervous system

Motor Division (Efferent)

Answer 11

-Somatic Sensory Division
-Visceral Motor Division (autonomic)

Question 12

Organization of the Nervous System

Visceral Motor Division (Autonomic)

Answer 12

-Sympathetic System (Active)
-Parasympathetic System (Resting)

-Enteric Nervous System

Question 13

Definition

Central Nervous System (CNS)

Answer 13

Primary integration center; consists of brain and spinal cord

Question 14

Definition

Peripheral Nervous System (PNS)

Answer 14

Anything that isn’t CNS

Question 15

Definition

Sensory Division

Answer 15

Brings signals from peripheral tissue to CNS

Question 16

Definition

Visceral Sensory Division (autonomic)

Answer 16

Brings signals from glands, internal organs, and blood vessels to CNS

Question 17

Definition

Motor Division

Answer 17

Brings signal from CNS to peripheral tissues

Question 18

Definition

Visceral Motor Division (Autonomic)

Answer 18

Brings signal from CNS to glands, smooth muscle, and cardiac muscle

-Sympathetic System: Activated in moments of stress; controls heart rate, digestive functions, urinary output, and more
-Parasympathetic System: Opposite of sympathetic system; active during rest

Question 19

Definition

Somatic Motor Division

Answer 19

Brings voluntary signals from CNS to skeletal muscle

Question 20

Definition

Enteric Nervous System

Answer 20

Involuntary; semi-autonomous; regulates digestive functions; receives some input from visceral sensory division.

Question 21

1

Answer 21

Dendrites: Projections that extrude from the cell body; site of signal input

Question 22

2

Answer 22

Soma: Cell body; contains nucleus, organelles and majority of cytoplasm.

Question 23

3

Answer 23

Axon: Long process extruding from soma; where action potential travels. May or May not be myelinated.

Question 24

4

Answer 24

Node or Ranvier

Question 25

5

Answer 25

Axon Terminal: Distal end of the Axon; site of signal output.

Question 26

7

Answer 26

Myelin Sheath

-CNS: Oligodendrocytes
-PNS: Schwann Cell

Question 27

Cell type, Location, and function

Answer 27

Ependymal Cell

CNS

-Line spinal Cord and brain ventricles
-Produce cerebrospinal fluid (CSF)
-Use cilia to circulate CSF
-compose the Blood-CSF-Barrier

Question 28

Cell Type, Location, and Function

Answer 28

Oligodendrocytes

CNS

-Myelin Forming Cell of the CNS

Question 29

Cell Type, Location, and Function

Answer 29

Astrocytes

CNS

-Link neurons to blood supply
-Form blood brain barrier
-“Housekeepers” that take care of neurons

Question 30

Cell Type, Location, and Function

Answer 30

Microglia

CNS

-Immune defense of the CNS
-Scavenge damaged cells