Which of the following glands is called the Master Gland?

MP CHO -2021 (Shift 1st)

Applied Anatomy

Easy

Appeared in: MP CHO -2021 (Shift 1st)

Explanation

The pituitary gland is known as the 'Master Gland' because it synthesizes and secretes tropic hormones.
Tropic hormones are hormones that have other endocrine glands as their target.
It controls the functions of several other glands, including the thyroid, adrenal glands, and gonads.
The pituitary gland is located at the base of the brain and is controlled by the hypothalamus.

Option A: The pancreas primarily regulates blood glucose levels through the secretion of insulin and glucagon; it does not regulate other endocrine glands.
Option C: The thyroid gland's primary function is to regulate metabolism. Its activity is controlled by the Thyroid-Stimulating Hormone (TSH) released from the pituitary gland, making it a target gland, not the master gland.
Option D: The adrenal glands are responsible for the 'fight or flight' response and regulating salt/water balance. They are controlled by the Adrenocorticotropic Hormone (ACTH) from the pituitary gland.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain The role and function of the pituitary gland within the endocrine system as background academic context rather than a clinical decision trigger.
Understanding the pituitary's role is crucial for nurses, as dysfunction can lead to widespread systemic effects. For example, a pituitary adenoma (tumor) can cause overproduction or underproduction of hormones, leading to conditions like acromegaly (excess GH) or Cushing's disease (excess ACTH).
Nurses must monitor for signs of pituitary dysfunction, such as changes in vision (due to the gland's proximity to the optic chiasm), electrolyte imbalances, and abnormal growth patterns.
What if? If a patient has a tumor that destroys the anterior pituitary (hypopituitarism), the nurse would anticipate the need for lifelong hormone replacement therapy for thyroid, adrenal, and gonadal hormones, as the 'master' signal is lost.

How to Approach the Question

First, identify the core concept of the question, which is to name the 'Master Gland'.
This is a direct factual recall question based on knowledge of the endocrine system.
Recall the functions of the major endocrine glands listed in the options.
Remember that the pituitary gland secretes multiple 'tropic' hormones that control other glands.
Compare the function of the pituitary to the other options. The pancreas, thyroid, and adrenal glands have specific functions but are either not involved in controlling other glands (pancreas) or are themselves controlled by the pituitary (thyroid, adrenal).
Therefore, select the pituitary gland as the correct answer.

Concept Tested & Keywords

Concept Tested: The role and function of the pituitary gland within the endocrine system.
Stem keywords: gland, Master Gland
Lead-in keywords: Which
Negative lead-in flag: false

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