THE NERVOUS SYSTEM

Question 1

What does the nervous system divide into?

Answer 1

Peripheral Nervous system and Central Nervous system

Question 2

What does the peripheral nervous system branch into?

Answer 2

Somatic nerves & Autonomic nerves

Question 3

What does the Central Nervous System branch into?

Answer 3

Brain and spinal cord

Question 4

What do the autonomic nerves branch into?

Answer 4

Sympathetic & Parasympathetic.

Question 5

What do somatic cells branch into?

Answer 5

Sensory and Motor

Question 6

Are sympathetic & Parasympathetic
voluntary or involuntary?

Answer 6

involuntary

Question 7

Are motor and sensory involuntary or voluntary?

Answer 7

Voluntary

Question 8

What is the Central Nervous System (CNS)?

Answer 8

Coordinating centre for incoming and outgoing info

Question 9

What is the Peripheral Nervous System (PNS)?

Answer 9

Nerves that carry info between organs
and the CNS (Central nervous system)

Question 10

What does the Central Nervous System consist of?

Answer 10

the brain and spinal
cord

Question 11

What does the central nervous system do?

Answer 11

integrates and processes
information sent by nerves

Question 12

In the Peripheral Nervous System, what are somatic cells and what do they do?

Answer 12

Voluntary - Sensory receptors in the head and the nerves that carry the sensory information to the CNS.

Question 13

What are one of the things that somatic cells control?

Answer 13

Controls skeletal muscle

Question 14

In the Peripheral Nervous System, what do Autonomic nerves contain?

Answer 14

They contain special motor nerves that control internal organs

Question 15

What does Sensory do in the Peripheral Nervous System?

Answer 15

They relay info about
environment to CNS

Question 16

What does motor do in the Peripheral Nervous system

Answer 16

They initiate an
appropriate response to
sensory information

Question 17

What do the autonomic nerves in peripheral nervous system do?

Answer 17

involuntary - controls
glandular secretions and the functioning of smooth and cardiac muscles

Question 18

What is Sympathetic in peripheral nervous system?

Answer 18

It prepares the body for stress

Question 19

What is Parasympathetic in peripheral nervous system?

Answer 19

It restores normal balance

Question 20

Sympathetic and Parasympathetic are in _____________ of one
another.

Answer 20

opposition

Question 21

What are the two types of cells in Nervous System?

Answer 21

Glial Cells & Neurons

Question 22

What are Glial Cells also known as?

Answer 22

Aka neuroglial cells

Question 23

What are glial cells in the nervous system?

Answer 23

Non-conducting cells, that supports neurons by nourishing, removing
wastes, and defending against infection.

Question 24

Why are glial cells important in the nervous system?

Answer 24

Important for structural support and metabolism of nerve cells.

Question 25

What are neurons in the nervous system?

Answer 25

Functional unit of nervous system.

Question 26

What do neurons do?

Answer 26

They respond to physical and chemical stimuli, conduct electrochemical signals, and release chemicals that regulate various body processes.

Question 27

Each neuron consists of ....

Answer 27

A nucleus, cell body, dendrites, and axons.

Question 28

Some neurons contain _______ cells that create myelin sheath.

Answer 28

schwann

Question 29

What are the three groups of neurons?

Answer 29

3 groups: sensory, interneurons, motor

Question 31

What does myelin sheath give the axons?

Answer 31

A white appearance that functions to protect the axon and increases the rate of nerve impulse transmission.

Question 32

Neurons can be classified by ....

Answer 32

the number of processes that extend of the cell body.

Question 33

What are the 3 CLASSIFICATIONS of neurons?

Answer 33

Multipolar neuron, bipolar neuron, and unipolar neuron

Question 34

How many attachments does multipolar neuron have?

Answer 34

More than 2 attachments

Question 35

How many attachments does bipolar neuron have?

Answer 35

2 attachments

Question 36

How many attachments does unipolar neuron have?

Answer 36

One attachment

Question 37

What are Sensory Neurons?

Answer 37

Afferent neurons (input) Neurons that send signals from the senses, such as skin, muscles and internal organs to the CENTRAL NERVOUS SYSTEM.

Question 38

Where are sensory neurons located?

Answer 38

Located in clusters called GANGLIA outside of the spinal cord

Question 39

What are Interneurons?

Answer 39

Association neurons Link neurons within body. Integrate and interpret sensory info and connect neurons to outgoing motor neurons.

Question 40

Where are interneurons mostly found?

Answer 40

Mostly found in brain and spinal cord (CNS).

Question 41

What are Motor Neurons?

Answer 41

efferent neurons (output) Neurons that transmit command from the CNS to the muscles, glands and organs.

Question 42

Why do motor neurons relay info to muscles, organs and glands?

Answer 42

Because they produce responses

Question 43

What is Reflex Arc?

Answer 43

Simple connections of neurons that explain the reflexive (quick, without thought) behaviors. involuntary and unconscious

Question 44

Reflex arc can can happen as fast as __ ms

Answer 44

50

Question 45

Example of reflex arc

Answer 45

A person would feel the burn after he or she has already pulled their hand away the brain is sent information after the reflex arc has completed

Question 46

5 Parts of reflex arc?

Answer 46

Receptor Effector Sensory neuron Interneuron in spinal cord Motor neuron R.E.S.I.M lol!

Question 47

Nerves versus Neurons?

Answer 47

Neurons are individual nerve cells, Nerves are made from many neurons.

Question 48

Are motor neurons, afferent or efferent?

Answer 48

Efferent

Question 49

Are sensory neurons afferent or efferent?

Answer 49

Afferent

Question 50

Are sensory neurons, multipolar or unipolar?

Answer 50

Unipolar

Question 51

Are motor neurons unipolar or multipolar?

Answer 51

Multipolar

Question 52

Slide 10,11,15, 16,17,19 for diagram

Answer 52

period