Unit 3 - Integumentary System: Vocab Flashcards
Apocrine sweat gland
Secretes a viscous fluid into a hair follicle.
- Armpit hair
- single layer of columnar cells
- Deeper in the dermis; larger than eccrine
Arrector pili
Produces the appearance of goose bumps
- Smooth muscle at the base of each hair.
- in the dermis
Basal cell
Innermost cells of the deeper epidermis of the skin.
- Produces keratinocytes
Cortex
Superficial part of an organ or bodily structure.
Dermal papilla
Resides in the hair follicle and regulates hair growth.
- Finger-like projection
- superficial portion of dermis
Dermis
layer of skin or tissue, under the epidermis
Eccrine sweat gland
Produces sweat all over the body for thermoregulation
- hands, feet, forehead
- upper layer of dermis
Elastin fibers
Allows flexibility and elasticity of the skin.
- Reticular layer
Epidermis
Surface epithelium of the skin, over the dermis
- Stratified squamous epithelium
Hypodermis
Tissue beneath the epidermis
- Adipose and loose areolar connective tissue
Keratin
Protein in epithelial cells and tissues that are resistant to degradation.
- Composes hair, skin, and nails.
Langerhans cell
Cell in the epidermis, interspersed between keratinocytes
- In the stratum spinosum
- Macrophage
Meissner corpuscle
Responds to light touch
Melanin
Pigments in skin, hair, and eyes that are produced by melanocytes.
Merkel cell
In the stratum basale
- Sensory and touch receptors
- Abundant in hands and feet
