a disease caused by the death of the cells that secrete insulin, as a result from the body's own immune system attacking and destroying the cells.
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25
Explain, using insulin as an example, what is meant by negative feedback.
When blood sugar rises,receptors in the body triggers pancreas tosecrete insulin into the blood effectively lowering blood.Once blood sugar levels reach homeost
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15
___________ are coiled tubes that secrete sweat through a sweat duct.
Sweat glands
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10
A part of the brain called __________ is at the centre on the control mechanism that keeps internal temperature constant.
hypothalamus
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15
This is the insoluble form of carbohydrates that is stored in the liver.
glycogen
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20
The condition of having high glucose concentration in the blood.
hyperglycemia
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25
If your body temperature falls below 37 degree C, nerve impulses from the hypothalamus cause the following things to happen like _______________________ (hairs) and _________________________((arterioles).
hairs erect to trap a layer of warm air which insulate it and arterioles constrict so not much blood flows through them, thus conserving heat
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thief
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baam
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25
Explain the difference between vasoconstriction and vasodilation.
Vasoconstriction is the constriction/ contraction of smooth muscles in the arteriole walls. It decreases in size, reducing blood flow.
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20
What is found beneath the skin layer that serves as insulation and padding?
adipose tissue/ fats
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25
What is homeostasis?
The active process of keeping the internal environment constant.
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25
How does the central nervous system and the thermoreceptors coordinate in coping with heat gain?
When the external temperature rises above normal levels, thermoreceptors within the skin send signals to the hypothalamus in the brain. The hypothalamus is
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heart
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fairy
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gift
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15
Not eating carbohydrate for a long time will cause hypoglycemia and the person feels
Very tired, confused and shows irrational behavior. Eventually, the person becomes unconscious.