Science Chapter 6

Front 1

Stimulus

Back 1

Any change or signal in the environment that can make an organism react in some way.

Front 2

Response

Back 2

What your body does in reaction to a stimulus.

Front 3

Neurons

Back 3

Cells that carry information through the nervous system.

Front 4

Nerve Impulse

Back 4

The message carried by a neuron.

Front 5

Dendrites

Back 5

Threadlike extentions of neurons that carry nerve impluses toward the cell body. A neuron has many of these.

Front 6

Axons

Back 6

A threadlike extention of a neuron that carries impulses away from the cell body. A neuron only has one.

Front 7

Nerve

Back 7

Bundle of nerve fibers.

Front 8

Sensory Neuron

Back 8

Picks up stimuli from the internal or external environment and converts each stimulus into a nerve impulse.

Front 9

Interneuron

Back 9

Neuron that carries nerve impulses from one neuron to another. These neurons are in the brain.

Front 10

Motor Neuron

Back 10

Sends an impulse to a muscle or gland, causing the muscle or gland to react in response.

Front 11

Synapse

Back 11

Junction where one neuron can transfer from an impulse to the next structure.

Front 12

Central Nervous System

Back 12

Control center of the body. Consists of the brain and spinal cord.

Front 13

Peripheral Nervous System

Back 13

Includes all the nerves.

Front 14

Brain

Back 14

The part of the central nervous system that is located in the skull and controls most functions in the body.

Front 15

Spinal Cord

Back 15

The thick column of nervous tissue that links the brain to most of the nerves in the peripheral nervous system.

Front 16

Cerebrum

Back 16

The part of the brain that interprets input from the senses, controls movement, and carries out learning, remembering, and making judgements.

Front 17

Cerebellum

Back 17

Teh part of the brain that coordinates the actions of the muscles and helps maintain balance.

Front 18

Brain stem

Back 18

Part of the brain that lies between the cerebellum and spinal cord and controls involuntary actions such as breathing and heart rate.

Front 19

What are the 3 jobs of the nervous system?

Back 19

1. Receives information about what is happening inside/outside body.

2. Directs the way your body responds.

3. It helps maintain homeostasis.

Front 20

What are the two places from which the nervous system receives information?

Back 20

Inside and outside body

Front 21

Homeostasis

Back 21

The process by which an organism's internal enviornment is kept stable in spite of changes in the external environment.

Front 22

Somatic Nervous System

Back 22

The group of nerves in the peripheral nervous system that controls voluntary actions.

Front 23

Autonomic Nervous System

Back 23

The group of nerves in the peripheral nervous system that controls involuntary actions.

Front 24

Reflex

Back 24

An automatic response that occurs rapidly and without conscious control.

Front 25

Consussion

Back 25

A bruiselike injury of the brain that occurs when the soft tissue of the brain collides against the skull.

Front 26

What are the 3 types of neurons found in the body?

Back 26

sensory, interneuron, and motor

Front 27

What are the 3 things a neuron's cell body contains?

Back 27

Nucleus, dendrites, and an axon.

Front 28

What helps protect the brain from injury?

Back 28

Skull, connective tissue, and watery fluid

Front 29

What protects the spinal cord?

Back 29

Vertebral column, connective tissue, and watery fluid.

Front 30

Which half of the cerebrum is associated with creativity and artistic ability?

Back 30

Right

Front 31

What are the 3 main parts of the brain?

Back 31

cerebrum, cerebellum, and brain stem

Front 32

What is the largest part of the brain?

Back 32

Cerebrum

Front 33

What is the link between the brain and the peripheral nervous system?

Back 33

The spinal cord

Front 34

What do you call an automated response that can help protect you from getting hurt?

Back 34

Reflecx

Front 35

Do nerve impulses travel to the spinal cord or the brain faster?

Back 35

Spinal cord

Front 36

Does the reflex action (pulling your hand away from a sharp object) occur before or after you feel the pain?

Back 36

After.

By the time you feel pain, you have already moved your hand away. It takes longer for the pain impulses to get to the brain and be interpreted than it does for the reflex action to occur.