Question

what is glands ? How many type of gland?
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Answer 1

a gland is a group of cells or a “secreting organ” that excretes a chemical substance. This substance can take the form of hormones, sweat, saliva, mucus, or acids (i.e. HCl acid in gastric glands). Glands are tasked with helping create the substance that they then secrete for further use or total elimination from the body.

types of glands

1. endocrine gland

• Thyroid gland
• Pituitary gland
• Pancreas
• Pineal gland
• Adrenal gland
• Thymus
• Testes (in males)
• Ovaries (in females)

     2. exocrine glands:

• Salivary glands (contains amylase to help soften our food)
• Bile-making glands of liver
• Part of the pancreas that secretes pancreatic enzymes into the duodenum of the small intestine
• Prostate gland (helps propel seminal fluid during ejaculation)
• Gastric glands (digests our food)
• Sweat glands (removes heat from the body)

Answer 2

A gland is a group of cells or a “secreting organ” that excretes a chemical substance. This substance can take the form of hormones, sweat, saliva, mucus, or acids.

Endocrine glands excrete chemicals, such as hormones, through the basal lamina of cells that travel through the blood stream. Examples of endocrine glands are the thyroid glands and pituitary glands.

Exocrine glands, on the other hand, use ducts to expel their material onto an epithelial surface rather than the bloodstream. This external surface can be our skin or even our GI tract. The material is always expelled onto the apical (“top”) surface of our cells.