Coordination and response Flashcards

1
Q

stimuli,receptor,effector

A

All organisms are able to sense changes in their environment, called stimuli, and respond to them. The part of the body that senses the stimulus is a receptor, and the part that responds is an effector.

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2
Q

neurons

A

The human nervous system contains specialized cells called neurons.

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3
Q

CNS

A

The brain and spinal cord make up the central nervous system (CNS), which coordinates responses to stimuli.

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4
Q

reflex actions

A

Reflex actions are fast, automatic responses to a stimulus. They involve a series of neurons making up a reflex arc. A sensory neurone takes the impulse to the CNS and a motor neurone takes it from the CNS to an effector.

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5
Q

Receptors are generally found within

A

sense organs.

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6
Q

Two types of action controlled by the human nervous system are:

A

voluntary and involuntary actions. The peripheral nerves transmit both of them.

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7
Q

The human nervous system is made up of two parts:

A

Central nervous system (CNS) - brain and spinal cord: role of coordination
Peripheral nervous system - nerves: connect all parts of the body to the CNS.
Together, they coordinate and regulate body functions.
Sense organs are linked to the peripheral nervous system.

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8
Q

Sensory neurone

A

sense organs à CNS

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9
Q

Motor neurone

A

CNS à effectors

muscles or glands

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10
Q

Motor and sensory neurones are covered with a

A

myelin sheath, which insulates the neurone to make transmission of the impulse more efficient.

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