Endocrine and Exocrine Glands

The pancreas is a glandular organ in the digestive system and endocrine system of vertebrates. It is both an endocrine gland producing several important hormones and a digestive organ secreting pancreatic juice containing digestive enzymes that assist the absorption of nutrients, and the digestion in the small intestine. 

The thymus gland, located behind your sternum and between your lungs, is only active until puberty. After puberty, the thymus starts to slowly shrink and become replaced by fat.

The hypothalamus is the body's thermoregulatory center, often called the 'thermostat.' It maintains core body temperature around 37°C through mechanisms like sweating, shivering, and blood flow regulation. The pineal gland (A) regulates sleep-wake cycles via melatonin, pituitary (B) is the 'master gland' for hormones, and thyroid (C) controls metabolic rate.

 Suckling by the baby stimulates the paraventricular nuclei and supraoptic nucleus in the hypothalamus, which signals to the posterior pituitary gland to produce oxytocin. Oxytocin stimulates contraction of the myoepithelial cells surrounding the alveoli, which already hold milk. The increased pressure causes milk to flow through the duct system and be released through the nipple.

This is the correct option. The parotid glands are located in the cheek. The sub-maxillary glands are located in the lower jaw. The sub-lingual glands are located below the tongue.

Zinc is found mainly in pancreas and may have an important role in the storage of insulin in the glands.

It is a ductless gland.

The changes take place in human body and they show their capability to reproduce.

The ovary is an endocrine gland. There are two ovaries in a female body. Each ovary has the shape and a size almost that of an almond.

The other name for the pituitary gland is hypophysis cerebri.

The sublingual gland is the smallest of the three glands. It is situated beneath the mucous membrane of the floor of the mouth at the side of the fraenulum, in contact with the sublingual depression on the inner surface of the mandible. It is narrow, flattened, shaped somewhat like an almond and weighs nearly 2 gm.

Endocrine glands are ductless glands that secrete hormones directly into the bloodstream through extracellular fluid (ECF). This contrasts with exocrine glands, which secrete into ducts (e.g., sweat glands, salivary glands). The key distinction is that endocrine secretions enter blood circulation, not ducts.

The thyroid gland is the largest endocrine gland in the human body, weighing approximately 20-25 grams in adults. The pituitary is smaller (pea-sized), adrenal glands are also smaller, and the pineal gland is tiny compared to the thyroid.

This is the correct option as both the adrenal glands are located on top of each kidney.

Pituitary gland is the master gland of the body.