1. The main purpose of a melanocyte in the epithelial layers of the skin is to a
ID: 3510720 • Letter: 1
Question
1. The main purpose of a melanocyte in the epithelial layers of the skin is toa. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
2. The main purpose of a Langerhan's cell in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
3. The purpose of a keratinocyte in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage 1. The main purpose of a melanocyte in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
2. The main purpose of a Langerhan's cell in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
3. The purpose of a keratinocyte in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage 1. The main purpose of a melanocyte in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
2. The main purpose of a Langerhan's cell in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
3. The purpose of a keratinocyte in the epithelial layers of the skin is to
a. Waterproof the skin
b. Relaying sensory information
c. Trap foreign particles
d. Prevent DNA damage
Explanation / Answer
Answer-1 (d) Prevent DNA damage.
Explanation-
Melanocytes are melanin producing cells located in various regions such as bottom layer of skin epidermis, middle layer of eye, the inner ear. Through a process called as melanogenesis, melanin is produced. This melanogenesis helps to protect the layer under the skin from the UV-B light that may damage it( DNA photodamage).
Answer-2 (c) Trap foreign particles.
Explanation-
Langerhan's cells are the dendritic cells of the skin and mucosa. These are found in all layers of the skin specially stratum spinosum. During skin infections, the Langerhan's cell take up and start to process the microbial agents to become fully functional. These cells are similar in morphology and function to the macrophages.
Answer-3 (a) Waterproof the skin
Explanation-
The predominant cell type in the epidermis is the keratinicytes. There primary function is to act as a barrier against the various environmental damage such as the pathogeneic bacteria, heat, water loss.
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