Ch. 21

Any internal or external change that brings about a response

• CNS

• PNS

• stimuli

• rods

Tags

NGSS.MS-LS1-8

What is the balance of things in the body

• Dendrite

• Homeothasis

• Cochlea

• Hormone

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Dendrite

• Fatty layer around the axon

• nickname of nerve cells

• carry impulses away from the cell body

• receive impulses from other neurons and send them to the cell body

Tags

NGSS.MS-LS1-2

Axon

• Fatty layer around the axon

• nickname of nerve cells

• carry impulses away from the cell body

• receive impulses from other neurons and send them to the cell body

Myelin Sheath

• Fatty layer around the axon

• nickname of nerve cells

• carry impulses away from the cell body

• receive impulses from other neurons and send them to the cell body

Tags

NGSS.MS-LS1-2

Sensory neurons

• relay these impulses

• Motor neurons then conduct impulses from the brain or spinal cord to muscles or glands throughout your body

• receive information and send impulses to the brain or spinal cord

Tags

NGSS.MS-LS1-3

Motor neurons

• relay these impulses

• conduct impulses from the brain or spinal cord to muscles or glands throughout your body

• receive information and send impulses to the brain or spinal cord

Interneurons

• relay these impulses

• conduct impulses from the brain or spinal cord to muscles or glands throughout your body

• receive information and send impulses to the brain or spinal cord

Three main parts of eye

• cornea

  lens

  retina

• cochlea

  spine

  brain

• nasal passage

  throat

  brain stem

• optical nerve

  rods

  cones

Responds to bright light and color

• rods

• cones

Tags

NGSS.MS-LS1-8