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Biol 235 - Chapter 5 with complete verified solutions 2024
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Biol 235 - Chapter 5 with complete verified solutions 2024
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Biol 235 - Chapter 5with complete verified
solutions 2024
integumentary system - answer composed of skin,
hair, oil, sweat glands, nails, sensory receptors
most exposed to disease, infections and injury
integumentary system function - answer maintain
constant body temp, protects the body and
provides sensory information about surrounding
environment, stores blood, excretes and absorbs
substances, synthesis of vit D
serves as barrier against infection and injury
skin (cutaneous membrane) - answer covers
external surface of body, largest organ of the body
in weight
2 main parts of skin - answer epidermis (epithelial
tissue)
,dermis (connective tissue)
skin (cutaneous membrane) function - answer
protect deeper tissues from excessive loss of
minerals, heat, & water
protects body from diseases by providing barrier
epidermis - answer superficial, thinner portion
composed of keratinized stratified squamous
epithelium
AVASCULAR (will bleed if cut)
dermis - answer deeper, thicker connective tissue
portion
vascular = bleeding
subcutaneous layer - answer hypodermis
(hypo=below) deep to the dermis but not part of
the skin
, AREOLAR and ADIPOSE tissue
serves as STORAGE for FAT and contains large
BLOOD VESSELS that supply the skin
contains lamellated corpuscles
lamellated corpuscles (pacinian corpuscles) -
answer nerve endings sensitive to pressure
located in subQ layer and sometimes dermis
4 principle types of cells in epidermis - answer
keratinocytes
melanocytes
intraepidermal macrophages (Langerhans cells)
tactile epithelia cells
keratinocytes - answer 90% of epidermal cells,
arranged in four/five layers and produce keratin
and lamellar granules
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