The diagram shows a vertical section through human skin - Leaving Cert Biology - Question 6 - 2015
Question 6
The diagram shows a vertical section through human skin.
(a) Place an X on the adipose tissue.
(b) Name A and B.
A.
B.
(c) Define each of the following words ... show full transcript
Worked Solution & Example Answer:The diagram shows a vertical section through human skin - Leaving Cert Biology - Question 6 - 2015
Step 1
Place an X on the adipose tissue.
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Answer
An X should be placed on the region of the diagram that represents the adipose tissue, which is located beneath the dermis and is responsible for storing fat.
Step 2
Name A.
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Answer
A is the erector muscle, which is responsible for causing hair to stand upright.
Step 3
Name B.
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B is the sweat gland, which plays a significant role in regulating body temperature.
Step 4
Define and explain Piloerection.
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Answer
Piloerection occurs when the erector muscles contract, causing hair to stand upright. This process traps a layer of air close to the skin, which acts as an insulator, reducing heat loss and helping to keep the body warm.
Step 5
Define and explain Vasoconstriction.
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Answer
Vasoconstriction is the process by which blood vessels, specifically small arteries or arterioles, narrow in diameter. This narrowing reduces blood flow to the skin, which minimizes heat loss to the environment, thereby helping to maintain body temperature.
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