Nervous System

Question 1

Neuron

Answer 1

Basic unit of the nervous system

Carry information through the nervous system in a form called an impulse

3 parts: cell body, dendrites, and axon

Question 2

Dendrites

Answer 2

Receive impulses and bring them to the cell body

Question 3

Cell body

Answer 3

Where the nucleus and most of the organelles are located

Question 4

Axon

Answer 4

Carries impulses away from the cell body towards other neurons, muscles, and glands

Question 5

Myelin sheath

Answer 5

Covers the axon

Allows the impulse to travel faster

Question 6

3 types of neurons

Answer 6

Sensory
Motor
Inter neurons

Question 7

Sensory neurons

Answer 7

Carry messages from your body to your brain or spinal cord

Question 8

Motor neurons

Answer 8

Carry messages from your brain to your body

Question 9

Inter neurons

Answer 9

Carry messages in your brain

Question 10

The nervous system —- and —– incoming information before —————

Answer 10

Sorts
Interprets
Directing a response

Question 11

The myelin sheath allows for impulses to be quickly ———-

Answer 11

Carried over long distances

Question 12

White matter

Answer 12

Matter in the brain covered in myelin sheath

Question 13

Gray matter

Answer 13

Matter in the brain not covered with sheath

Question 14

Do neurons touch?

Answer 14

No but they lie end to end

Question 15

Synapse

Answer 15

Gap between the neurons

Question 16

When an impulse reaches the end of a neuron, the neuron releases ——- which move across the gap between the neurons

Answer 16

Neurotransmitter

Question 17

The neurotransmitters then activate the — of the next neuron

Answer 17

Dendrite

Question 18

Central nervous system

Answer 18

Control center of the nervous system

Coordinates all of your body’s activities

Brain and spine

Question 19

Brain

Answer 19

Control center of the entire nervous system

Question 20

Three parts of the brain

Answer 20

Cerebrum
Cerebellum
Brainstem

Question 21

Cerebrum

Answer 21

Controls your conscious activities including intelligence, memory, language, skeletal muscles movements, and your senses

Question 22

Cerebellum

Answer 22

Controls balance, posture, and coordination

If you injure your cerebellum, your movements become jerky

Question 23

Brainstem

Answer 23

Made up of three parts: medulla oblongata, the pons and midbrain

Question 24

Medulla oblongata

Answer 24

Controls breathing and heart rate

Question 25

Pons and midbrain

Answer 25

Coordinate the brain's messages

Question 26

Spinal cord

Answer 26

Made of neurons and bundles of axons that pass impulses to and from the brain

Question 27

The cerebrum has ---- lobes or sections

Answer 27

4

Question 28

Frontal lobe

Answer 28

Controls reasoning, planning, emotions, problem solving, and smell

Question 29

Parietal lobe

Answer 29

Controls touch, pressure, temperature, pain, and taste

Question 30

Temporal lobe

Answer 30

Controls hearing, memory, and speech Broca's area

Question 31

Occipital lobe

Answer 31

Controls vision

Question 32

Peripheral nervous system

Answer 32

Made up of all of the nerves that carry messages to and from the central nervous system

Question 33

Together, the CNS and the PNS respond to things that..

Answer 33

Happen in the outside environment

Question 34

There are 2 parts to the PNS:

Answer 34

Somatic and autonomic nervous systems

Question 35

Somatic nervous system

Answer 35

Carries information between your skin, the CNS, and your muscles Voluntary Sometimes a stimulus results in an automatic response called a reflex

Question 36

Autonomic Nervous system

Answer 36

Carries impulses from the CNS to your internal organs Involuntary

Question 37

There are 2 parts of the autonomic nervous system:

Answer 37

Sympathetic and parasympathetic

Question 38

Sympathetic nervous system

Answer 38

In control when you are stressed such as when you are running, or when something scares you (fight or flight response)

Question 39

Parasympathetic nervous system

Answer 39

In control when you are resting, such as when you are sleeping or sitting down

Question 40

Both sympathetic and parasympathetic systems send signals to the same --------

Answer 40

Internal organs

Question 41

Nerve

Answer 41

A collection of axons pulled together with blood vessels and connective tissue

Question 42

Sensory nerves

Answer 42

Conduct sensory information from their receptors to the CNS where the information is then processed

Question 43

Motor nerves

Answer 43

Conduct signals from the CNS to muscles

Question 44

Nervous system

Answer 44

Controls us by sending messages and receiving messages to and from the brain