Nervous System Organization

Question 1

What Nervous System structure do Cnidarians contain?

Answer 1

Nerve Net (interconnected Neurons)

CNN - News

Question 2

What Nervous System structure do Echinoderms contain?

Answer 2

Nerve Ring

Question 3

What nervous system structure do Platyhelminthes contain?

Answer 3

Ladder-like structure

Question 4

These two species contain Ganglia - segmented cluster of neurons

Answer 4

1.) Annelida

2.) Arthropods

Question 5

The Central Nervous System corresponds to the _____ and ____ ___

Answer 5

Brain & Spinal Cord

(CBS)

Question 6

The Poriferal Nervous System corresponds to the ____ and ____

Answer 6

Nerves & Ganglia

(PNG)

Question 7

What are the three types of Glial Cells?

Answer 7

1.) Astrocytes

2.) Microglia

3.) Ependymal Cells

Question 8

Astrocytes regulate ____ ____

Answer 8

Extracellular fluids

Question 9

Microgalia get rid of ______ ___

Answer 9

Dead Cells

Question 10

Ependymal Cells are involved in the production of ____ ____

Answer 10

Cerebrospinal Fluids

Question 11

All three glial cells maintain _____ ______

Answer 11

Central Nervous System (CNS) homeostasis

Question 12

What is Mylenation?

Answer 12

Neurons surrounded by layers of fat

Question 13

In the Central Nervous System, what cells wrap around neurons?

Answer 13

Oligodendrocyte cells

Question 14

In the Peripheral Nervous System, what cells wrap around the Neurons?

Answer 14

Schwann Cells

Question 15

List 4 components of the Brain

Answer 15

Gray Matter (Outside)
White Matter (Inside)
Ventricles
Cerebrospinal Fluid

Question 16

The Spinal Cord Links the brain to the rest of the NErvous System and has opposite brain mater orientation to the brain, menaing that gray matter is on the _____ and white matter is on the _____ in the SPINAL CORD.

Answer 16

Inside

Outside

Question 17

What are the two main types of Nerves (bundles of Axons)

Answer 17

1.) Cranial Nerves - originate from brain

2.) Spinal Nerves - Originate in spinal cord

Question 18

Two functional components of the Peripheral Nervous System are _____ (sensory) & _____ (motor)

Answer 18

• Affruent (Sensory)
• Effruent (Motor)

Question 19

Describe the two main types of Senses: Visceral & Somatic

Answer 19

Visceral - Not aware of (blood pH, etc)

Somatic - We are aware of (ex. smell, taste, touch, etc)

Question 20

Efferent contains two components, the _____ _____ and ______ ____ ____

Answer 20

Motor System (Voluntary movement and Reflexes)

Autonomic Nervous System (Movement we do not control - heart, glands, etc)

Question 21

List the 3 divisions of Autonomic Nervous System

Answer 21

1.) Sympathic Division (Flight or Fight)

2.) Parasympathic Division (rest and digest)

3.) Enteric Division (digestive tract, pancreas, and gall bladder)

Question 22

Neural tube in the anterior will become a __A.__, while the rest in the posterior will form the __B.___

Answer 22

A. Brain

B. Spinal Cord

Question 23

CC Components of the Brain: What is the function of the Cerebrum?

Answer 23

Frontal lobe

• decision making, emotions, voluntary movement, memory, perception

Question 24

What is the function of the Callosum in the brain?

Answer 24

Connects the Left and Right halves of the brain

Question 25

The cerebellum in the brain is responsible for:

Answer 25

- Movement, balance, motor skills, coordination

Question 26

Describe the Diencephelon components

Answer 26

1.) Below Hypothalamus - Regulates Pituitary, involved with the 4 F's ( Feeding, Fleeting, Fighting, Mating) 2.) Hypothalamus - Main input center for sensory information to the cerebrum

Question 27

The Brainstem contains 3 Parts, what are they?

Answer 27

1.) Midbrain 2.) Pons 3.) Medulla

Question 28

In the Brainstem, what does the midbrain do?

Answer 28

Receives Sensory Input

Question 29

IN the Brainstem, what is the role of the Pons?

Answer 29

Deals with Respiratory and Sleep centers

Question 30

In the Brainstem, what is the role of the MEdulla

Answer 30

Continuous with the Spinal Cord (Heartbeat, Respiration, Blood pressure, etc)