Integumentary System Flashcards
Where are eccrine glands found?
All over the body
What do eccrine glands produce? And what does it consist of
Sweat
It is a clear secretion that is primarily water but has some salts, vitamin C, metabolic wastes (ammonia urea, and uric acid), and lactic acid
What does sebum do for the skin?
It contains a chemical that helps kill bacteria and prevents the bacteria on the skin surface from invading deeper regions
Whitehead
If a sebaceous gland becomes blocked with sebum
Blackhead
If the accumulated material of the whitehead oxidizes and dries, it darkens
What does hair do? (head, nose, eyes)
Guards the head against bumps, eyelashes shield the eyes, nose hairs help keep foreign particles out of the respiratory tracts
What does brown toned skin have?
A lot of melanin
What do light skinned people have?
Less melanin, the crimson color of oxygen rich hemoglobin in the dermal blood supply flushes through the transparent cell layers above (gives the skin a rosy glow)
What do eccrine glands contain?
Ducts
What is important about eccrine glands?
It is a part of the body’s heat regulating equipment
What are the eccrine glands supplied with?
Nerve endings, it causes them to secrete sweat when the external temperature or body temperature is high
Where are the appocrine glands?
Mostly in the axillary (armpit) and genital areas
Are eccrine or appocrine glands larger?
appocrine
Where do the appocrine glands empty into?
The hair follicles
What do appocrine gland secretions contain?
Fatty acids, proteins, salts, vitamin C, metabolic wastes (ammonia urea, and uric acid), and lactic acid
What color are appocrine gland secretions?
Milky or yellowish
How do appocrine glands create odor?
It is odorless until bacteria that live on the skin use its proteins and fats as a source of nutrition for their growth, then taking on a musky unpleasant odor
What is hair?
A flexible epithelial structure
What is hair produced by?
The hair follicle
What is the hair root?
The part enclosed in the follicle
What is the hair shaft?
The part projecting from the surface of the scalp or skin
What is the nail?
A scale like modification of the epidermis that corresponds to the hoof or claw of other animals
What is the free edge?
The end white part of the nail
What is the nail body?
The visible attached portion (underneath is the basale)
What is the nail bed?
The part by the cuticle that is embedded in the skin
What is the nail matrix responsible for?
Nail growth
How do nails grow?
As the nail cells are produced by the matrix they become heavily keratinized and die. Like hair, the nails are mostly non living material
What are are sweat glands called?
Sudoriferous glands
What does sudor mean?
Sweat
Where are sweat glands?
Widely distributed in the skin
How many sweat glands does a person have?
More than 2.5 million
What are the two types of sweat glands?
Eccrine glands and apocrine glands
What do the sebaceous glands create?
Sebum
What prefix means grease?
Seb