SELF-DEFENCE: Learning Intention 1 Flashcards by Perla Melhem

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Q

What is a stimulus

A

a change in the environment that is detected by sensory receptors

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Q

What is a receptor

A

a sepcialised cell that detects the stimulus and converts it into an electrical signal

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Q

Four types of receptors

A

Photoreceptor
Mechanoreceptor
Chemoreceptor
Thermoreceptor

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Q

What is a sensory neuron

A

a nerve cell that transmits an electrical signal from the receptor to the CNS

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Q

What is a response

A

an action taken by the effector

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Q

What is a motor neuron

A

a nerve cell that transmits signals from the CNS to the effectors

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Q

What is an effector

A

a muscle or gland that carries out a response

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Q

Process of a stimulus response pathway

A

sensory recpetor detects the stimulus
sensory neuron sends a message to the CNS
CNS processes the information and decides on a response
motor neuron carries the commans from the CNS to the effector (muscle or gland)
the effector reacts

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