Multiple Choice
The posterior lobe of the pituitary gland is not a true endocrine gland because ________.
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43. Endocrine System
Endocrine System
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Which of the following hormones is secreted by the thymus gland?
A
Aldosterone
B
Thymosin
C
Insulin
D
Cortisol
Verified step by step guidance1
Step 1: Understand the role of the thymus gland. The thymus gland is primarily involved in the immune system and plays a crucial role in the development and maturation of T-cells (a type of white blood cell). It secretes hormones that regulate immune function.
Step 2: Review the hormones listed in the options and their functions. Aldosterone is secreted by the adrenal glands and regulates sodium and potassium balance. Insulin is secreted by the pancreas and regulates blood sugar levels. Cortisol is secreted by the adrenal glands and helps manage stress and metabolism. Thymosin is associated with the thymus gland and aids in T-cell development.
Step 3: Match the hormone to the gland. Since thymosin is directly involved in immune system regulation and is secreted by the thymus gland, it is the correct answer.
Step 4: Eliminate the incorrect options. Aldosterone, insulin, and cortisol are secreted by other glands (adrenal glands and pancreas) and are not related to the thymus gland.
Step 5: Conclude that thymosin is the hormone secreted by the thymus gland, as it aligns with the gland's function in immune system development.
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