HLTC22H3 Chapter 5: chapter 5

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carminesnail178

14 Feb 2012

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Is critical in temperature maintenance and helps in homoostasis. Aging of the skin is one of the most obvious clues to age. It"s the largest and most visible organ of the body: outermost layer = epidermis, second layer = dermis, third layer = subcutaneous fat. Epidermis: consists mostly of keratinocytes that protect the skin from outside harm. Langerhans cells (make up 1% of the cells in the epidermis) respond to toxic allergic stimuli. Dermis: consists mostly of collagen and elastin tissue, cells in the dermis layer are responsible for the skin"s ability to respond to allergens. Subcutaneous fat: consists mostly of adipocytes (fat cells) It gives shape and form to the body and provides protection and insulation. The loss of sweat glands in the skin affects thermal regulation, decreasing the ability to sweat. The greatest risk factor for its development is sun exposure.

Related Questions

1. Although melanocytes are the cells that produce melanin, the cell that actually concentrate the melanin in the apical region of the cell to protect the cell nucleus are _______?

2. Match the definition

__A cell located in the epidermis that produce melanin

__ an epithelial cell composing the majority of the epidermis

__ a fold of the epidermis that interdigitates with dermal papillae

___ a "nipplelike" extension of the dermis into the epidermis

A. dermal papilla

B. epidermal ridge

C. kerantinocyte

D. Melanocyte

3. The _________(papillary/reticular) layer of the dermis is the thickest layer of the dermis.

sangriaraccoon992

Short answers( Just few words) Basic bio, answer them all and I will rate you

1-What type of tissue is the epidermis? What germ layer is it derived from?

2-What does it mean that the epidermis is avascular? Virtually all cells of the human body are within 20 Âµm of a capillary. Do some of the cells of the epidermis fly in the face of this general rule?

3-Epidermal ridges and dermal papillae increase the surface area for attachment of the epidermis to the dermis. What are the structures that lag the epidermis down to the dermis?

4-What is the most apical stratum of the epidermis? Visceral? Which layer is not present in thick skin?

5-Thick skin has five strata and thin has four, but this is not the primary reason why thick skin is so much thicker than thin skin. What is the primary reason?

6-What is the most abundant cell in the epidermis of your skin? What other cells are located in the epidermis? In which stratum are the cells you identified located?

7-How long does it take a keratinocyte produced in the stratum germinativum to be sloughed off the surface of the epidermis?

short answers( Just few words) Basic bio, answer them all and I will rate you

1-What is the most apical stratum of the epidermis? Visceral? Which layer is not present in thick skin?

2-Thick skin has five strata and thin has four, but this is not the primary reason why thick skin is so much thicker than thin skin. What is the primary reason?

3-What is the most abundant cell in the epidermis of your skin? What other cells are located in the epidermis? In which stratum are the cells you identified located?

4-How long does it take a keratinocyte produced in the stratum germinativum to be sloughed off the surface of the epidermis?

5-What does it mean that the epidermis is avascular? Virtually all cells of the human body are within 20 Âµm of a capillary. Do some of the cells of the epidermis fly in the face of this general rule?

HLTC22H3 Chapter 5: chapter 5

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