Test Two Nervous Tissue

Question 1

The central nervous system consists of

Answer 1

Brain and spinal cord

Question 2

Why called central nervous system

Answer 2

In the central axis of the body

Question 3

The central nervous system is the part of the nervous system that…

Answer 3

Controls our body

Question 4

Peripheral nervous system is made up of

Answer 4

Plexus of the body and main nerves of the body

Question 5

The peripheral nervous system originates from where

Answer 5

Brain and spinal cord

Question 6

What is a plexus

Answer 6

Groups of nerves

Question 7

How many cranial nerves

Answer 7

12

Question 8

Cranial nerves originate where and innervate where

Answer 8

From brain and innervate the head and neck

Question 9

How many pair of spinal nerves

Answer 9

33

Question 10

The spinal nerves attach where and innervate what

Answer 10

Originate from the spinal cord and innervate the body

Question 11

What are sensory nerves

Answer 11

Carry information towards the CNS

Question 12

What are motor nerves

Answer 12

Carry information away from CNS

Question 13

What are mixed nerves

Answer 13

Nerves that are motor and sensory

Question 14

Autonomic system innervates what

Answer 14

To the involuntary muscles of the body

Question 15

Specifically what muscles does the autonomic nervous system innervates

Answer 15

Smooth and cardiac muscle

Question 16

What are the two subsections of the autonomic nervous system

Answer 16

Sympathetic and parasympathetic

Question 17

The sympathetic is used for

Answer 17

Flight or flight, survival

Question 18

The parasympathetic is used for

Answer 18

Rest and digest, returns the body back to resting state after sympathetic response

Question 19

Function of glial cells

Answer 19

Support cells of the nervous system

Question 20

How many glial cells per neuron

Answer 20

10 glial cells

Question 21

What are the three things astrocytes do

Answer 21

Storage, scavengers and support

Question 22

How are astrocytes storage cells

Answer 22

Store metabolites such as sugar and deliver them to neuron

Question 23

How are astrocytes work as scavengers

Answer 23

Responsible for cleaning up the environment of the neuron

Question 24

How do astrocytes work as support

Answer 24

Physical support for neurons, form scaffolding

Question 25

What are microvilli

Answer 25

Used for protection against pathogens by attacking and destroying foreign molecules

Question 26

What nerve cell is the macrophage of the CNS

Answer 26

Microglia

Question 27

What are oligrodendrocytes

Answer 27

Secretion and maintenance of myelin

Question 28

If you increase myelin, what happens to conduction velocity

Answer 28

Increase

Question 29

What are ependymal cells

Answer 29

Make cerebral spinal fluid

Question 30

What is cerebral spinal fluid

Answer 30

Modified blood plasma

Question 31

A nerve cell is also known as

Answer 31

Neuron

Question 32

What are neurons

Answer 32

Functional cells of the nervous system

Question 33

What is the function of neurons

Answer 33

Conduct action potentials

Question 34

Nervous system works on a rate of what

Answer 34

Action potentials

Question 35

What is the binary code of the nervous system

Answer 35

Either the neuron fires or it doesn’t

Question 36

What are the three parts of the neuron

Answer 36

Cell body, dendrites and axons

Question 37

What is the largest part of the neuron

Answer 37

Cell body

Question 38

Where do most of the cellular processes take place in the neuron

Answer 38

Cell body

Question 39

What is found in the cell body of the neuron

Answer 39

Nucleus, Nissl bodies, protein synthesis organelles, mitochondria, lysosomes, ER and golgi

Question 40

What are Nissl bodies made of

Answer 40

RER, ribosomes and polysomes

Question 41

Function of dendrites

Answer 41

Carry action potential toward cell body

Question 42

How many dendrites per neuron

Answer 42

0 to 16

Question 43

What is the primary dendrite

Answer 43

Process that connects to the body

Question 44

Dendrites begin to branch when

Answer 44

They move away from the body forming the dendritic tree

Question 45

The purpose of branching the dendrites

Answer 45

Increase surface area for synaptic contact

Question 46

What are inside dendrites

Answer 46

Will contain all the same organelles as the cell body but the nucleus

Question 47

Function of axon

Answer 47

Process that carries action potential away from the cell body

Question 48

How many axons per neuron

Answer 48

One

Question 49

Purpose of myelin sheath

Answer 49

Increase conduction velocity

Question 50

What are the nodes of ranvier

Answer 50

Point in myelin sheath that has break points

Question 51

How does the action potential move down the axon

Answer 51

AP jumps from node to node

Question 52

Purpose of myelin and nodes of ranvier

Answer 52

Myelin helps by not having the membrane depolarize throughout just at the nodes

Question 53

What are telodendria

Answer 53

Area of axon beginning to flare out

Question 54

Purpose of telondendria

Answer 54

Increases surface are and allows for multiple terminal boutons

Question 55

What are terminal boutons

Answer 55

End of the axon terminals where synapses occur

Question 56

More terminal boutons mean what

Answer 56

More efficient the nervous system

Question 57

You can classify neurons based on what

Answer 57

Number of processes

Question 58

What neuron does not exist in human nervous system

Answer 58

Unipolar

Question 59

What are unipolar neurons

Answer 59

Has one axon and no dendrites at the body, simplest neuron

Question 60

Where does synapse occur at the unipolar neuron

Answer 60

At the body

Question 61

What are pseudounipolar neuron

Answer 61

Two processes attach to the cell body but it looks like one under light microscope

Question 62

Where do you see pseudounipolar in the body

Answer 62

General sensory systems such as pain, temp or touch

Question 63

What are bipolar neurons

Answer 63

Cell body with axon and dendrites but the processes are on opposite sides of the body

Question 64

Where are bipolar neurons found

Answer 64

In special senses such as retina of eye, auditory system or vestibular system

Question 65

What are multipolar neurons

Answer 65

Cell body and axon with more than one dendrite

Question 66

Where do you find multipolar neurons

Answer 66

Motor systems such as ventral horn of spinal cord

Question 67

What is the most numerous neurons in the human

Answer 67

Multipolar neuron due to the complexity of the nervous system