Laboratory Report 1 O INTEGUMENTARY SYSTEM Responds to body

Laboratory Report 1 O INTEGUMENTARY SYSTEM Responds to body 9 Gland that secresns an oily whwuance Cell division and deepest layer of epidermis 13. Tubetike part that contains root of hair 4. Causes hair wand and goose bumps to appear Complete the following bande How does the skin otyour palm diner troon that on the back powenon ofyour Describe the diferences you observed in the type and distribution ofhair on the trom and back posterior of your forearm. 4. What cells produce the pigment in

Solution

Answer :

Apocrine sweat gland

Become active at puberty

Arrector pili

Smooth muscle attached to follicle, Responsible for \"goose bumps\"

Dermis

General layer of outermost superficial layer of skin

Eccrine sweat glands

Responds to elevated body temperature

Epidermis

Beds skin to underlying organs

Hair follicle

Tube like part that contains root of the hair

Keratin

Hard protein of skin and hair option 10

Melanin

Epidermal pigment

Melanocyte

Pigment producing cell

Sebaceous gland

Gland that secretes oily substance

Seratum baselle

Cell division and deepest layer of epidermis

Seratum corneum

Outermost layer of epidermis

Subcutaneous layer

Inner layer of skin

Sebum

An oily secretion that helps to waterproof body surface

Q.1: The palm doesnt have hair follicles, and and it has an extra skin layer for protection. Skin on the palm is thick and has got no appendages where as the skin on the back of the hand is thin and has appendages and pigment secreting cells called melanocytes the presence of melanocytes and their secretion make the skin on hand appear dark comapred to palm.

Q2. Anterior has more hair because it has a thicker layer of skin. Posterior has less & thinner layers than he anterior; so less hair. Forearm is a lot softer and there is hardly any. The back is courser and there is more of it.

Q 4. Melanin is the specialized pigment produced by melanocytes. They position themselves at the openings on the skin\'s surface through which hair grows (follicles).

Apocrine sweat gland	Become active at puberty
Arrector pili	Smooth muscle attached to follicle, Responsible for \"goose bumps\"
Dermis	General layer of outermost superficial layer of skin
Eccrine sweat glands	Responds to elevated body temperature
Epidermis	Beds skin to underlying organs
Hair follicle	Tube like part that contains root of the hair
Keratin	Hard protein of skin and hair option 10
Melanin	Epidermal pigment
Melanocyte	Pigment producing cell
Sebaceous gland	Gland that secretes oily substance
Seratum baselle	Cell division and deepest layer of epidermis
Seratum corneum	Outermost layer of epidermis
Subcutaneous layer	Inner layer of skin
Sebum	An oily secretion that helps to waterproof body surface