Which endocrine gland is known as the 'master gland'? MCQ with Answer and Explanation

Which endocrine gland is known as the 'master gland'?
A. Adrenal
B. Pituitary
C. Pancreas
D. Thyroid
Answer: Option B
Solution (By JKExamLibrary)
The pituitary gland, located at the base of the brain, controls other endocrine glands through its hormones (e.g., TSH, ACTH, FSH, LH). Hence, it is called the master gland. The hypothalamus regulates the pituitary via releasing and inhibiting hormones. Thyroid secretes thyroxine, adrenal secretes adrenaline, pancreas (endocrine part) secretes insulin and glucagon. The pituitary has two lobes: anterior and posterior.

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The junction between two neurons where neurotransmitters are released is the:
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B. Synapse
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Correct Answer: Option B


Explanation:
A synapse is a specialized junction where the axon terminal of one neuron communicates with the dendrite or cell body of another neuron via neurotransmitters. The axon hillock is where action potential initiates, nodes of Ranvier are gaps in myelin sheath, dendrites receive signals.

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Correct Answer: Option A


Explanation:
Secondary structure refers to local folding patterns like α-helices and β-sheets. Primary is amino acid sequence; tertiary is 3D folding; disulfide bonds are tertiary/quaternary; denaturation disrupts non-covalent bonds, not peptide bonds.

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Correct Answer: Option C


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