Exocrine glands differ from endocrine glands in that exocrin

Exocrine glands differ from endocrine glands in that exocrine glands secrete only into the bloodstream. Secrete only local hormones. secrete through ducts or tubes to the body\'s exterior. only secrete salts. Secrete only into the urine.

Solution

42. ANS: C. Secrete through ducts or tubes to the body’s exterior.

Explanation:

Hormones classification based on distance over hormone act:

1. Autocrine Hormones: Such hormones are act on the same cell.

Ex: Inter lukin 2 produced by T lymphocytes.

2. Para crine: These are act nearby region of tissue; it is also known as local mediators. These do not get released into blood.

Ex: Gastro intestinal hormones.

3. Endocrine glands: These are duct less hormones, it act so far from the site where it produced. They control long term of target organs. It directly secretes into blood.

Ex: Thyroid gland.

4. Exocrine glands: It secret their products onto epithelial surfaces through tiny tubes called ducts (exo means \"out\" or \"external\") and it controls short time activity.

Ex: Gastric gland and salivary gland.