Question

Which is the largest endocrine gland?
A. Thyroid
B. Liver
C. Pituitary
D. Thymus

Answer 1

Hint: Endocrine glands play vital roles in the body functions. Thyroid is the endocrine gland present in the neck portion. It is larger in size. Liver is the largest gland in the body. Pituitary gland is located in the brain which appears the same as kidney beans. Thymus is the primary lymphoid organ.

Complete answer:
Endocrine glands are those glands which do not have ducts. They directly secrete the hormones into the bloodstream. These glands include: hypothalamus, pineal, pituitary, thyroid, thymus, pancreas, adrenal glands, etc. These glands all together are responsible for the proper functioning of the body.
Thyroid gland which is positioned on the neck just below the larynx is considered as one of the largest endocrine glands in the body. Thyroxine and triiodothyronine hormone are produced by this gland. They both regulate the metabolic activity of the body’s cells. It can also produce the hormone calcitonin that helps in the regulation of blood calcium levels. It decreases the concentration of calcium in the blood, where most of it is stored in the bones.
The largest gland in the body is known as liver. It stores its waste bile in Gallbladder. It is released into the duodenum and helps in digestion of fats.
Pituitary gland is also called a master gland which lies in the brain. The size and shape of the gland is similar to the kidney beans.
Thymus is the primary lymphoid organ in which T cells mature. It helps to provide immunity to the body.
From the above information we have found that thyroid is the largest endocrine gland.

Hence, the correct answer is option (A).

Note: Thyroxine activates in the presence of iodine. Deficiency of thyroxine can cause goiter. Liver secretes bile juice which does not have any enzymes in it. Pancreas is mainly divided into two parts: anterior pituitary and the posterior pituitary gland. Pancreas helps to maintain the blood sugar levels. It is also considered to be a part of the gastrointestinal system.