Heat is transferred by conduction, convection and radiation. When a person is submerged in cold water, their body temperature can drop very quickly. This process of heat transfer is called ________.
conduction
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25
How do hormones travel the body?
Hormones travel throughout the body, either in the blood stream or in the fluid around cells, looking for target cells.
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15
This is the insoluble form of carbohydrates that is stored in the liver.
glycogen
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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.
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10
Adipose tissue is a layer of _____________.
fat
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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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25
What is homeostasis?
The active process of keeping the internal environment constant.
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25
How does glucagon work?
Glucagon's role in the body is to prevent blood glucose levels dropping too low. To do this, it acts on the liver in several ways: It stimulates the conversion
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15
these groups of cells are scattered through the pancreas to make two hormones.
islets of Langerhans
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15
___________ are coiled tubes that secrete sweat through a sweat duct.
Sweat glands
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lifesaver
Give 25 points!
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seesaw
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shark
Other team loses 25 points!
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thief
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20
____________________ is the relaxation of smooth muscles in the arteriole walls. It increases the diameter of the blood vessels, increasing blood flow.
vasodilation
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20
The condition of having high glucose concentration in the blood.
hyperglycemia
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15
The top layer of our skin is made up of dead cells called cornified layer. Some parts of epidermis contain a dark brown pigment, called _______ which absorbs the harmful ultraviolet rays in sunlight.