Neurons Flashcards

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1
Q

How do neurones work?

A

1) Electrical impulse is sent from a nerve receptor and travels along the axon
2) At nerve ending there is a gap called the synapse. It works as the electrical impulse and triggers the release of neurotransmitters.

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2
Q

What’s a reflex arc?

A

Nerve pathway which makes a fast automatic response possible

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3
Q

What are the 3 types of neurones?

A

Sensory
Relay
Motor

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4
Q

What are reflex actions?

A

Rapid automatic responses which don’t involve the brain. Important because it helps you avoid danger and helps with coordinating daily functions

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5
Q

What’s a stimulus?

A

Change in an organisms surroundings

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6
Q

What are receptors?

A

Something which detects changes. Converts stimulus energy into electrical impulses.

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7
Q

What’s an effector?

A

Muscle or gland that brings a response to the stimulus

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8
Q

What’s sensitivity?

A

Being able to detect or sense changes in the environment and to be able to make responses

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9
Q

What’s ADH?

A

Too little water in the blood

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10
Q

What’s homeostasis?

A

Maintaining a constant internal environment. Need to be kept steady so cells can function properly

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11
Q

What’s negative feedback?

A

Type of control which homeostasis involves

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12
Q

What is thermoregulation?

A

Control of body temperature to ensure optimum temperature for enzymes

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13
Q

What are electrical impulses passed through?

A

Electrical impulses are passed through the nervous system and back to the effector

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