14.4 - Reflexes Flashcards

What a reflex arc is The stages of a reflex arc The importance of reflex arcs

1
Q

What is a reflex arc?

A

Neural pathway causing involuntary reaction to stimulus

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2
Q

What is a withdrawal reflex?

A

Reflex action moving away from danger

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3
Q

What are reflex arcs typically composed of?

A

Three types of neurone

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4
Q

Where are many reflex arcs controlled?

A

Spinal cord

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5
Q

What are the stages of a reflex arc?

A

Stimulus

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6
Q

What is the role of the receptor?

A

Detects stimulus

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7
Q

What is the role of the sensory neurone?

A

Transmits impulses to relay neurone

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8
Q

What is the role of the relay neurone?

A

Connects sensory to motor neurones

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9
Q

What is the role of the motor neurone?

A

Transfers impulses to effector

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10
Q

What is the role of the effector?

A

Muscle or gland carrying out response

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11
Q

What are the key features of reflex arcs?

A

Involuntary

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12
Q

Why are reflex arcs important?

A

Bodily protection and function

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