Identify EACH of the following:
(a) The gland that secretes hormone A - NSC Life Sciences - Question 1 - 2018 - Paper 1
Question 1
Identify EACH of the following:
(a) The gland that secretes hormone A.
(b) Hormone B.
1.5.2 Name the mechanism in the diagram that regulates the level of hormone ... show full transcript
Worked Solution & Example Answer:Identify EACH of the following:
(a) The gland that secretes hormone A - NSC Life Sciences - Question 1 - 2018 - Paper 1
Step 1
(a) The gland that secretes hormone A.
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Answer
The gland that secretes hormone A is the pituitary gland (also known as the hypophysis). This gland plays a crucial role in regulating various hormonal functions in the body.
Step 2
(b) Hormone B.
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Answer
Hormone B is thyroxin (also known as T4). It is produced by the thyroid gland and is involved in regulating metabolism.
Step 3
1.5.2 Name the mechanism in the diagram that regulates the level of hormone B.
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Answer
The mechanism regulating the level of hormone B in the diagram is known as the negative feedback mechanism. This process helps maintain hormone levels within a desired range.
Step 4
1.5.3 State TWO possible effects that this would have on the secretion of the hormones referred to in the diagram above.
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Answer
With the removal of half of gland X, less hormone B (thyroxin) will be secreted, leading to decreased metabolic rates.
Consequently, more hormone A (TSH) will be secreted from the pituitary gland in an attempt to stimulate thyroid function, but this may not be sufficient without adequate gland function.
