Question

Which layer of the skin does not contain blood vessels?
A. Epidermis
B. Hypodermis
C. Dermis
D. All of the above

Answer 1

Hint: Blood vessels are the components of the circulatory system. Blood vessels transport blood throughout the body. These vessels transport oxygen, nutrients, minerals along with blood to the different cells throughout the body.

Complete Answer:
Layers of the skin: Skin has 3 main layers. That are-
1. Epidermis
2. Hypodermis
3. Dermis

1. Epidermis: It is the top layer of the skin, which we see.
- Epidermis is too thin in some parts of the body like in eyelids and it is too thick in some parts of the body like the bottom of feet.
- The epidermis makes a pigment which is called melanin which is responsible for the colour of the skin. It provides a waterproof barrier.
- As epidermis is the top layer of skin, it does not contain any blood vessels.

2. Dermis: Dermis is a skin layer which is present beneath the epidermis.
- The dermis layer contains tough connective tissues, hair follicles and sweat glands which are responsible for making sweat.
- Dermis also contains the sebaceous gland which is also called as oil producing gland.

3. Hypodermis: Hypodermis is a deep subcutaneous layer.
- This layer is made up of fat and connective tissue. It is the bottom layer of the skin.
- The function of hypodermis is to attach the dermis to the muscles and bones.
- Subcutaneous layer helps in regulating the temperature as it helps in keeping the body from getting too warm or too cold.

Hence, option A is the correct option for this question.

Note: Skin is the largest organ of the body. Skin is the first protective barrier of the human body. It prevents the entry of microbes and the foreign particles into the body. It permits the sensation of heat, cold and touch. The skin is the organ which performs many functions like protection, sensation, thermoregulation, water resistance, storage and synthesis, etc.