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Chapter 5- Epithelia

Chapter 5- Epithelial

QuestionAnswer
What are the main components of the integumentary system? Skin, hair, nails, glands, and sensory receptors.
What are the two main layers of the skin? Epidermis (outer layer) and dermis (inner layer).
What is the subcutaneous layer (hypodermis)? A layer beneath the dermis composed mainly of fat and connective tissue that helps insulate and anchor the skin.
What is the epidermis made of? Stratified squamous epithelial tissue, mostly keratinocytes.
What protein makes the epidermis tough and waterproof? Keratin.
What are the major cell types in the epidermis? Keratinocytes, melanocytes, dendritic (Langerhans) cells, and tactile (Merkel) cells.
What pigment is produced by melanocytes? Melanin, which protects against UV radiation.
What are the layers (strata) of the epidermis in thick skin (deep to superficial)? Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum.
What is the dermis composed of? Dense connective tissue, blood vessels, nerves, glands, and hair follicles.
What are the functions of the integumentary system? Protection, temperature regulation, sensation, excretion, vitamin D synthesis.
What types of glands are found in the skin? Sebaceous (oil) glands and sweat (sudoriferous) glands.
What is the function of sebaceous glands? Secrete sebum to lubricate and waterproof skin and hair.
What are the two types of sweat glands? Eccrine (for thermoregulation) and apocrine (found in axillary/genital areas, active after puberty).
Created by: bcaudell
 

 



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