Question

An example of a serous gland is
A. Pancreas
B. Goblet cell
C. Sweat gland
D. Sebaceous gland

Answer 1

Hint: There are mainly two types of glands: the endocrine gland that secretes its substances mainly hormones in the bloodstream and the exocrine gland that secretes its substances through a duct to the target surface. Serous glands secrete watery, mainly containing enzymes, and are protein-rich with the serum present.

Step by step answer:Option A) Pancreas has both endocrine and exocrine secretions. The islet of Langerhans secrete hormones like insulin, glucagon, and somatostatin. The exocrine part of the pancreas consists of acinar cells and ducts that secrete the serous secretions through the gut to the digestive tract that helps in digestion. Pancreatic lipase, amylase, and proteases are secreted from acinar cells and ductal cells secrete bicarbonate and water.
Option B) Goblet cells are goblet in shape that secrete mucus mainly containing mucins that are rich in glycoproteins. Mucus is a viscous fluid secreted for the protection of the respiratory and digestive lining and even has bicarbonate as one of their constituents. Goblet cells are present in the stomach that protects the stomach epithelial lining. Foveolar cells also produce mucus secretions. They are also present in the trachea and bronchi of the respiratory lining.
Option C) Sweat glands or sudoriferous glands have tubular structured cells that secrete sweat from the skin to maintain the body temperature homeostasis. It is an exocrine gland mainly of two types: Eccrine sweat glands present mainly on the palms of hands, sole of the foot, head, and on extremities. Apocrine sweat glands are mainly present in the armpits and perianal areas.
Option D) Sebaceous gland mainly produces lipids, oily or waxy material from the hair follicles, present on the skin. They are mainly holocrine types of glands. They are present on the face, head, palms, soles, and feet. Two main types of sebaceous glands are present: Fordyce spots mainly present on the mouth, face, and genitals. Meibomian glands secrete meibum in the eyelids.
Hence, the correct answer is option (A)

Note: Serous glands are yellow pale in color due to the presence of the serum and watery substance along with proteins. They are also present in the salivary glands.