Senses And The Nervous System

Question 0

What is stimulus?

Answer 0

A stimulus is something that causes a response e.g.

Question 1

What is sensitivity?

Answer 1

Detecting and responding to a stimulus

Question 2

Lens

Answer 2

Focuses the light onto the retina

Question 3

What is the function of the iris in the eye?

Answer 3

Controls the amount of light entering the eye

Question 4

Cornea

Answer 4

Allows light through

Question 5

Pupil

Answer 5

The hole that allows light through

Question 6

Nervous system

Answer 6

Brain, spinal cord, all the nerves

Question 7

Sensory nerve

Answer 7

Sends a message to the brain from the sense organ

Question 8

Motor nerve

Answer 8

Sends a message from the brain to a muscle

Question 9

Ciliary muscle

Answer 9

Changes the shape of the lens for focusing

Question 10

Retina

Answer 10

Contains the light sensitive cells

Question 11

Optic nerve

Answer 11

Carries messages to the brain

Question 12

What is the sense and stimulus in the eye?

Answer 12

Sense:sight stimulus: light

Question 13

Messages

Answer 13

Are sent along nerves as pulses of electricity

Question 14

The eye contains

Answer 14

The cornea, iris , lens, pupil, retina, optic nerve

Question 15

Sense and stimulus of ears

Answer 15

Sense:hear Stimulus:sound

Question 16

Sense and stimulus of nose

Answer 16

Sense: smell
Stimulus: chemicals

Question 17

Sense and stimulus of tongue

Answer 17

Sense:taste
Stimulus:chemical

Question 18

Sense and stimulus of skin

Answer 18

Sense: feel
Stimulus:pressure

Question 19

Peripheral nervous system

Answer 19

Nerves in arms and legs that connects to central nervous system