The diagram shows a section through human skin - Leaving Cert Biology - Question 6 - 2008
Question 6
The diagram shows a section through human skin.
(a) Name parts A and B.
A ____________________
B ____________________
(b) Place X on the diagram to show where sw... show full transcript
Worked Solution & Example Answer:The diagram shows a section through human skin - Leaving Cert Biology - Question 6 - 2008
Step 1
Name parts A and B.
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Answer
A = hair
B = muscle
Step 2
Place X on the diagram to show where sweat reaches the skin surface.
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Answer
Location of X is the opening of sweat duct.
Step 3
Apart from water, name one other substance which is found in sweat.
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Answer
Urea, salt, lipid, or hormones.
Step 4
Describe briefly one way by which the skin helps to retain heat in cold conditions.
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Answer
The skin helps retain heat by having hair stand erect, trapping air, which acts as an insulator. Additionally, blood vessels (arterioles) can constrict to reduce blood flow to the surface, minimizing heat loss.
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