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biology > Homeostasis > Flashcards

Homeostasis Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

define homeostasis

A

The regulation of conditions in your body to maintain a stable environment.

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2
Q

What two systems control homeostasis?

A

The nervous system
The endocrine system (hormones)

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3
Q

How does information travel in the nervous system?

A

as electrical impulses

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4
Q

What are the specialised cells in nerves called?

A

neurons

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5
Q

What is the function of nerves?

A

transmit information to and from the brain/spinal cord

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6
Q

What is the release of hormones called?

A

secretion

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7
Q

what do receptors do?

A

detect changes to the internal conditions in the body

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8
Q

what are effectors?

A

muscles or glands that bring about changes to maintain a stable environment.

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9
Q

what is the function of a neuron?

A

carry electrical impulses from one part of the body to another

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10
Q

give 2 adaptations of neurons

A

extended shape (to carry nerve impulses from one part of the body to another)
Fine branches at their tips (to communicate with other neurons)

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11
Q
A
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12
Q

What are the 3 types of neurons?

A

sensory
motor
relay

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13
Q

What is a synapse?

A

the connection between2 nerves.

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14
Q

What does the sensory neuron do?

A

carry signals from receptors to the nervous system (brain+spinal cord)

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15
Q

What does the motor neuron do?

A

Carry signals from the CNS (brain+spinal cord) to the effectors

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16
Q

what does the relay neuron do?

A

Pass signals from the sensory neuron to the motor neuron

17
Q

What do hormones do?

A

carry infromation between organs via blood.

18
Q

Name the 3 main parts of the brain

A

cerebal cortex
medulla
cerebellum

19
Q

what does the cerebal cortex control?

A

consciousness, intelligence and memory

20
Q

what does the medulla control?

A

unconscious activities e.g heart beat and breathing

21
Q

what does the cerebellum control?

A

co-ordination of musclar activity

biology (10 decks)

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