2.1 responding to change Flashcards

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1
Q

How do humans know what is going on in their environment?

A

The nervous system has receptors to detect stimuli

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2
Q

Where are receptors found? Give the general name and 5 specific ones.

A

In the sense organs, eye, ear, nose tongue and skin

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3
Q

Give examples of types of stimmuli

A

Light, sound, chemicals, temperature, touch and pain

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4
Q

What coordinates responses to stimuli?

A

The brain

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5
Q

What system are the brain and the spinal cord part of?

A

The central nervous system (CNS)

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6
Q

What makes up the central nervous system (CNS)

A

The brain and the spinal cord

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7
Q

What are neurons? what do they carry?

A

Nerve cells which are found in nerves. They carry electrical impulses

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8
Q

What are the two types of neuron and what do they do?

A

Sensory neurons carry impulses from the receptors to the CNS

Motor neurons carry impulses from the CNS to the effector organs.

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9
Q

What are effector organs? What do they do if they are stimulated?

A

Muscles respond by contracting

Glands respond by secreting (releasing) chemicals.

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10
Q

How do impulses pass from the receptor to the CNS?

A

An electrical impulse along a sensory neuron

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