L6 Skin I - Skin the integumentary system 15% body weight...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Skin – the integumentary system
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
15% body weight Functions: protection synthesis (vit D) secretion camouflage regulate body temp immune function communication wound healing complex ecosystem
Background image of page 2
Basic structure of skin
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Epidermis – 4 layers stratum germinativum (stem cells) stratum spinosum - keratinocytes stratum granulosum stratum corneum – dead cells full of keratin
Background image of page 4
Other cells in epidermis: Langerhans cells – antigen presenting cells allergic and inflammatory conditions melanocytes – pigment fairly constant number, melanosomes passed to epidermal cells Merkel cells – sensory receptors No blood in epidermis except in some fishes and salamanders that have cutaneous respiration
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
At the junction between epidermis and dermis is the basal lamina
Background image of page 6
Dermis – 2 layers Fibroblasts, collagen, elastin, proteoglycans, fat cells, macrophages, blood, smooth muscle stratum laxum stratum compactum
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Other structures: GLANDS EXOCRINE = DUCTED GLANDS
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 25

L6 Skin I - Skin the integumentary system 15% body weight...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online