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Senses/Nervous Syste

Junior Cert Science

QuestionAnswer
What are the five senses Sight, Hearing, Smell, Taste and Touch
What are the five sense organs Eye, Ear, Nose, Tongue and Skin
What is a stimulus Something that creates a reaction
What does the nervous system consist of Brain and Spinal Cord and nerves form spinal cord
What do you call a nerve that carries a message to the brain Sensory nerve
What do you call a nerve that carries a message away from the brain Motor
What do you call a quick action that happens when a message is sent to the spinal cord and a response is sent from there to the muscle and then the brain Reflex action
What is the function of the cornea To bend the light rays inwards
What is the function of the lens To focus light on the retina
What is the function of the ciliary muscle To contract and relax so to change the shape of the lens during focusing
What is the function of the retina It contains light sensitive cells
What is the function of the optic nerve Carries messages to the brain
What is the function of the iris Its the coloured part that controls the amount of light entering the eye
What do you call the dark hole in the eye Pupil
Why does the hole appear black Because no light is reflected out, it is all absorbed
Created by: gcu science
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