40 terms

Skin & Skin's Accessory Structures

Review terms related to the skin and its accessory organs
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pore
any small opening in the skin or outer surface of an animal
hair shaft
the part of the hair that projects up from the skin's surface and is visible above the surface of the skin
hair root
the part of the hair contained within the follicle, below the surface of the skin
hair follicle
a tubelike pocket of epidermal cells that extends into the dermis and in which a hair develops; composed of epidermal cells
dermal papillae
fingerlike projections of the dermis into epidermis that account for the unique fingerprints.
sudoriferous glands
glands in the skin that secrete watery secretions (sweat), which contain salts and nitrogenous wastes
eccrine glands
secrete watery secretions for thermoregulation; ducts empty secretions directly into pores and onto outer surface of epidermis
epidermis
outer layer of skin that consists stratified squamous epithelium
dermis
the deep vascular inner layer of the skin that consists of dense fibrous irregular connective tissue
arrector pili
a smooth muscle attached to hair follicles that causes "goose bumps" to appear on the skin when contracted
hypodermis
a layer beneath the skin, which contains adipose tissue and loose areolar connective tissue; binds skin to underlying muscles
sebaceous glands
glands that secrete an oily secretion into the hair follicle that lubricates the hair and skin and discourages the growth of bacteria on the skin
ceruminous glands
Modified sweat glands of the external ear canal that secrete ear wax
mammary glands
modified sweat glands that produce milk to feed the young in response to certain hormones after childbirth
apocrine glands
glands that secrete their sticky odorous secretions into hair follicles; they become active at puberty
eponychium
The thick proximal nail fold that lies over the nail root.
nail bed
portion of the skin on which the nail body rests
hyponychium
thickened stratum corneum of the epidermis that lies underneath the free edge of the nail
nail body
The visible part of the nail that attaches it to the skin.
lunula
the half-moon shaped, whitish area at the base of a nail where there is a thicker germinal layer
free edge
Distal end of nail not in contact with the skin
nail root
the proximal end of a nail lying beneath the skin
nail matrix
Thickened portion of stratum basale proximal to the nail root and is responsible for nail growth
eponychium
What is B?
hyponychium
What is G?
lunula
What is C?
free edge
What is F?
nail body
What is D?
nail root
What is A?
nail matrix
What is E?
3
Which number points to arrector pili?
2
Which number indicates sudoriferous gland (duct)?
9
Which number represents dermis?
1
Which number is used to label stratum corneum?
sebaceous gland
What is number 2?
6
Which number points to the sensory receptor?
hair shaft
What is labeled with number 4?
hair follicle
What is number 8?
10
What number is used to indicate epidermis?
5
Which number points to adipose tissue?