Question

1. Recognize the hormones that act on the skin and its functions.
2. Recognize the structures that form part of the subcutaneous layer or hipodermis and its functions.

Answer 1

1. hair follicles and sebaceous glands are the targets for androgen steroids. This results in androgenic hair growth which is part of secondary sexual characteristics.
Growth hormone acts on the skin and helps in cell repair, regeneration and reproduction which is proper development of skin.

vitamin D inhibits the cell proliferation and differentiation of skin which helps to prevent uncontrolled cell growth and cancer.
Vitamin D also helps in stimulating innate reponse in skin and acts as antimicrobial.

Glucocorticoids also act on skin to reduce inflammation.
2. Hypodermis forms the last layer of skin. It is a subcutaneous tissue layer made up of fibroblast, adipose tissue and macrophages. It also contains blood vessels and nerves.
The main function of hypodermis os storage of fat in the form of adipose tissue.