B5- Homeostasis Flashcards

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1
Q

what is homeostasis?

A

regulation of the internal conditions of a cell or organism to maintain optimum conditions for functions in response to internal and external changes.

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2
Q

what are 3 controlled conditions?

A

temperature, water, glucose level

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3
Q

3 components of automatic control?

A

receptors, coordination centre, effectors

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4
Q

what organs can be found apart of the coordination centre?

A

brain, spine, pancreas

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5
Q

what is organs are apart of the central nervous system?

A

brain, spine

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6
Q

what is organs are apart of peripheral nervous system?

A

all nervous other than brain + spine

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7
Q

what stimulus can activate homeostasis?

A

light, smell, taste, sound, temperature, pressure

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8
Q

what are the 3 main parts of homeo stasis?

A

receptors, coordination centre, effectors

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9
Q

what are the 2 types of effectors?

A

sweat glands, muscles

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10
Q

what are adaptations of a nerve cell?

A

Mylein, branched connections, long body

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11
Q

what is mylein?

A

An insulator to insulate axon so electrical impulses can be transmitted rapidly

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12
Q

what are branched connections?

A

connect to other nerve cells & form network

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13
Q

what is the adaptation of having a long body?

A

cover more distance

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14
Q

what are the 3 types of neurons?

A

sensory neuron, relay neuron, motor neuron

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15
Q

where is the sensory neuron found?

A

from the receptor to the coordination centre

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16
Q

where can the relay neurons be found?

A

inside the coordination centre

17
Q

where can the motor neurons be found?

A

from the coordination centre to the effectors

18
Q

what is a synapse?

A

a gap or junction where there is a connection between neurons ( separated by synaptic clasp)

19
Q

how do neurons get across the synapse?

A

electrical signal is transformed into chemical transmitters which is diffused across

20
Q

what is homeostasis diagram?

A

STIMULUS–>RECEPTOR—(sensory neuron)—>synapseCORDINATION–(relay neuron)–CENTREsynapse—(motor neuron)—>EFFECTORS—> RESPONCE