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What is the largest organ of the body?
The outermost protective layer of dead karatinized epithelial cells.
The underlying layer of of connective tissue, with blood vessels, nerve endings, and the associated skin structures.
Sits underneath the dermis.Connects skin with superficial muscles, contains large deposits of fat.
Layers of the epidermis
- Stratum Corneum
- Stratum Lucidum
- Stratum Granulosum
- Stratum Spinosum*
- Stratum Basale*
Stratum Spinosum & Basale are part of the Stratum Germinativum (where Mitosis occurs)
Where does mitosis take place in the epidermal layers?
- Stratum Spinosum & Basale
- or Strarum Germinativum
What is Melanin and what does it do?
Melanin is a protein pigment found in the epidermal cells that protects against radiation from the sun.
What is the Dermis composed of?
Fibrous connective tissue, blood vessels, sensory nerve endings, hair follicles, and glands.
What function does sweat serve?
It regulates body temperature
Sweat glands that are most widely distributed along the body are known to be ______. They are the ones that produce sweat to regulate body temp.
Sweat glands mainly in the armpit and groin areas are known to be _______.
Why does sweat that comes from the apocrine sweat glands cause body odor?
because the sweat secretions contain bits of cytoplasm from the secreting cell attracting bacteria causing B.O
What does a sebaceous gland release?
Oil secretions (Sebum)
What is the purpose of Sebum or oil secretions?
To lubricate the skin
Oil is produced by _________ secretion , in which whole cells of the glands are part of the secretion. These glands are susceptible to becoming clogged and attracting bacteria, particularly during ___________.
Hair & Nails are composed of a Protein called _________.