Hormones and Glands Flashcards

(13 cards)

1
Q

What is the endocrine system?

A

System of glands that secrete hormones to send signals to effectors, transported via blood (Slower than nervous system)

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2
Q

What is the pituitary gland?

A

“Master” Gland, sends signals to other glands
Location: Head

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3
Q

What controls growth, metabolism etc

A

Thyroid Gland

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4
Q

What gland secretes insulin, glucagon and controls blood sugar levels

A

Pancreas

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5
Q

What gland releases adrenaline

A

Adrenal Gland

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6
Q

What gland releases sperm or eggs

A

Testes

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7
Q

What does the pancreas do if blood glucose levels are too HIGH?

A

Pancreas secretes insulin, which causes glucose to move from bloodstream into cells to be used for respiration
Excess glucose is converted into glycogen as an energy store

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8
Q

What does the pancreas do if blood glucose levels are too LOW?

A

Pancreas secretes glucagon, which causes the livers and muscles to convert glycogen back to glucose
This is an example of negative feedback

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9
Q

What is type 1 diabetes?

A

Pancreas doesn’t produce enough insulin for body
Injections needed

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10
Q

What is type 2 diabetes?

A

Cells no longer absorb glucose
Obesity higher risks

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11
Q

What does the adrenal gland do?

A

The Adrenal glands (Attached on top of kidneys) release adrenaline into your body, which increases blood flow and breathing rate, to prepare you for ‘fight or flight’

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12
Q

What does thyroxine do?

A

Controls metabolic rates in the body

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13
Q

What happens if thyroxine levels are too low?

A

Hypothalamus in brain releases TRH (Thyrotropin releasing hormone) which causes pituitary gland to release TSH
(Thyroid stimulating hormone) which causes thyroid to release more thyroxine
Example of negative feedback

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