coordination and control Flashcards

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1
Q

where is insulin released and function

A

released: pancreas
function: lowers blood glucose levels

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2
Q

where is ADH released and function

A

released: pituitary gland
function: reduced amount of water loss in urine

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3
Q

where is oestrogen released and function

A

released: ovaries
function: stimulates uterus lining to develop and development of secondary sexual female characteristics

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4
Q

where is progesterone released and function

A

released: ovaries
function: maintains uterus lining and controls the development of secondary sexual female characteristics

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5
Q

where is testosterone released and function

A

released: testes
function: stimulates development of male secondary sexual characteristics

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6
Q

where is adrenaline released and function

A

released: adrenal gland
function: increases heart and breathing rate for fight, fright or flight

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7
Q

where is FSH released and function

A

released: pituitary gland
function: stimulates an egg to mature in ovaries

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8
Q

where is LH released and function

A

released: pituitary gland
function: stimulates the release of an egg from the ovary (ovulation)

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9
Q

3 things that happen when you are too hot

A
  • vasodilation
  • sweating
  • hairs lay flat
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10
Q

3 things that happen when you are too cold

A
  • vasoconstriction
  • shivering
  • hairs stand on end
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11
Q

define homeostasis

A

the maintenance of a constant internal environment

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12
Q

what is osmoregulation

A

regulation of water levels within the body

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13
Q

what monitors the concentration of water in the blood

A

hypothalamus

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14
Q

what are tropisms

A

growth of a plant toward a directional stimulus

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15
Q

what is a positive phototropism

A

plants growing toward light

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16
Q

what controls the growth of tropisms

A

auxin

17
Q

what is a positive geotropism

A

growth toward gravity

18
Q

characteristics of endocrine system

A
  • slow release (except adrenaline)
  • chemical message
  • transported via blood
  • targets cells but sent over the whole body
  • controls long term processes
19
Q

characteristics of nervous system

A
  • fast release
  • electrical impulses
  • sent across neurones
  • message sent directly to muscle/gland
  • used when a fast response is needed
20
Q

define a hormone

A

chemical response to a stimulus

21
Q

role of the cornea

A

a curved transparent disc at the front of the eye. does most of the focusing

22
Q

role of the pupil

A

a circular opening whose size is controlled by the iris

23
Q

role of the iris

A

a ring of muscles with a hole in the middle - controls how much light enters the eye

24
Q

role of the lens

A

changes shape to fine tune the focusing of light onto the retina

25
Q
A