Question

Given below are four terms in each set. In each set is an odd term. Identify the odd term and name the category to which remaining three belong.

Adrenal gland, Liver, Thyroid gland, Pituitary

Answer 1

Adrenal gland:

1. Adrenal glands are a pair of triangular - shaped endorine glands.
2. Surface of adrenal gland is known as adrenal cortex and just beneath the adrenal cortex adrenal medulla region is present.

LIver:

1. The liver is the largest gland (exocrine gland) of the body.
2. It produces bile, which remains stored within the gall bladder before entering the bile duct.

Thyroid gland:

1. The thyroid gland is a bilobed endocrine gland which is situated in the upper part of trachea in the neck region.
2. It secretes thyroxin $\left(T_4\right)$, Triiodothyronine $\left(T_3\right)$ and calcitonin hormones.

Pituitary:

1. The pituitary is the most important endocrine gland of the human body.
2. Secretion of the pituitary regulates the secretion of other glands which is why it is known as the master gland.
3. It secretes many hormones such as - TSH, TSH, GH, GTH, ACTH, PRL, oxitocin etc.

Hence, the odd term is liver (it is an exocrine gland ) and the rest of these are endocrine glands.