co-ordination and control Flashcards

1
Q

stimulus

A

anything we respond to which is detected by a receptor

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2
Q

effector

A

something that produces a response e.g a muscle or a gland

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3
Q

CNS

A

made up of your brain and spinal cord

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4
Q

sensory neurones

A

carry electrical impulses in from the receptor to the CNS

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5
Q

motor neurones

A

carry electrical impulses out from the CNS to an effector which makes the response

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6
Q

voluntary action

A

we choose to do this, they involve using the brain

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7
Q

reflex actions

A

these do not involve thinking they are much faster

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8
Q

synapses

A

gaps between the neurones

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9
Q

hormones

A

chemical messengers that are produced by glands and travel in the blood to a target organ

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10
Q

homeostasis

A

blood glucose
osmoregulation

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11
Q

insulin

A

produced by the pancreas
stops blood glucose levels becoming too high

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12
Q

type one diabetes

A

childhood when pancreas stops producing insulin
the diabetic has to inject insulin

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13
Q

type two diabetes

A

bad lifestyle e.g obesity
controlled by diet and by taking tablets

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14
Q

sugar too low

A

drink a sugary drink

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15
Q

sugar too high

A

inject more insulin

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16
Q

long term effects of diabetes

A

eye damage
heart disease
strokes
kidney damage

17
Q

osmoregulation

A

controls the water in the body and is controlled by the brain,kidneys and hormones (ADA)

18
Q

ADH

A

anti diuretic hormone is produced by the brain when water levels in the blood are two low

19
Q

reabsorbed dilute

A

levels of ADH decrease so less water is reabsorbed in the kidney this leads to large volumes of dilute urine

20
Q

where is ADH produced

A

pituary gland

21
Q

phototropism auxins

A

a hormone lead response that a plant grows towards stimulus

22
Q

where is auxin made

A

in the stem tip
more auxin is made on the side away from the light causing the cells to grow more and elongate more