LAYERS OF THE SKIN
What are the layers of the skin in order?
1. Epidermis
2. Dermis
What are the two main types of glands?
1. Sweat glands
2. Sebaceous glands
What the three zones along the length of a hair?
1. Hair bulb
2. Root
3. Shaft
What are enzymes?
A biological catalyst that speeds up specific chemical reactions
Is the subcutaneous (hypodermis) layer apart of the integumentary system?
No
What are the two types of sweat glands?
1. Merocrine
2. Apocrine
Which region contains living epithelial cells? (Hair Matrix)
Hair bulb
What the difference of Uncatalyzed and Catalyzed enzymes?
Uncatalyzed - No enzyme present
Catalyzed - Enzyme present
What are the two layers of the dermis?
1. Papillary
2. Reticular
What is Sebum?
An oily secretion produced from the sebaceous glands that aid in lubricating the skin/hair
What are Dermal Papillae?
Finger like projections of the dermis, strengthens hair structure, supply nutrients, and contain sensory nerves
What is a "decomposition reaction"?
An initial large molecule broken down into smaller structures (Catabolic Reactions)
AB -> A+B
What are the 5 layers of skin in the epidermis in order?
C ome
L ets
G et
S ome
B urgers
C Corneum
L Lucidum
G Granulosum
S Spinosum
B Basale
What are the two exocrine glands of the skin?
1. Ceruminous glands
2. Mammary glands
What is the Arrector Pili?
Thin ribbons of smooth muscle that extend from the hair follicle to dermal papillae. Causes "goosebumps"
What is a "synthesis reaction?"
Two or more structures combined to form a larger structure (Anabolic Reaction)
A+B -> AB
What are the specialized cells of the epidermis?
1. Dendritic (Langerhans) Cells
2. Tactile (Merkel) Cells
3. Melanocytes