Homeostasis Flashcards

1
Q

define physiology?

A

study of normal function of living organisms

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2
Q

what is the respiratory system?

A

provides oxygen needed for oxidation and energy

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3
Q

cardiovascular system

A

pumps blood, delivers oxygen, nutients, removes waste in form of co2

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4
Q

gastrointestinal tract function

A

breaks down nutrients and passes them to the liver via portal vein

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5
Q

endocrine and nervous system function

A

coordination organ activity by normones or electrical activity

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6
Q

muscloskleltal system

A

locomotoon, maintenance of posture, brething, protection

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7
Q

define homeostasis

A

control o stabilisation of internal environments

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8
Q

what is an conformer?

A

restricted by environment

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9
Q

what is a regulator?

A

can control themselves

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10
Q

what is the internal envrionment?

A

extracellular fluid

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11
Q

what is the extracellular fluid?

A

interstitial fluid
plasma
transcellular fluid

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12
Q

which of the extracellular fluids are key in homeostsis?

A

interstitial fluid and plasma

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13
Q

what drives changes in intercellular fluid, ICF?

A

osmotic balances

secondary changes

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14
Q

what can changes in the ECF lead to?

A

il health, threaten survival due to the failure of regulation

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15
Q

what is negative feedback?

A

effector system that opposes the initiating stimuli

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16
Q

what is positive feedback?

A

effector system reinforcing or amplifying the initiating stimuli
keeps increasing it up and p

17
Q

negative feedback characteristics

A

set point and parameter
sensor to monitor variable
can detect error in the sensor using a comparator
effector for compensatory change