Chapter 32, Problem 7A

Summary Introduction

Introduction:

Dermis is a very thick layer present beneath the epidermis and above the subcutaneous layer of skin. It and is made up of fibrous and elastic tissue that helps in providing strength and flexibility to the skin.

Answer to Problem 7A

Correct answer:

The correct answer is option (a) muscles.

Explanation of Solution

Explanation/justification for the correct answer:

Option (a) muscles are not found in the dermis part as the dermis is made up of fibrous and elastic tissue that provides strength and flexibility to it.

Explanation for incorrect answer:

Option (b) sweat and oil glands are present in dermis. They are very important as they help in recovering the skin damage. Regeneration of epithelium cells occurs with the help of sebaceous glands and sweat glands. The sweat gland regulates the body temperature and removes waste onto the skin surface.

Option (c) hypodermis contains a protective layer of fat cells and adipose tissue. The fat acts as an insulator to the body and also helps in the conservation of heat. The layer that lies between the epidermis and the hypodermis is dermis.

Option (d) dermis contains many cells that are found within the connective tissue. There are three nerves found in the skin which are named as meissner, Pacinian corpuscles and Ruffini at the end. They respond to pain, light, touch, pressure, temperature and vibrational changes.

Conclusion

Muscles are the part from the given options that are not found in the dermis of the skin.