Basic anatomy- LAB

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Last updated 10:07 PM on 10/16/26
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9 Terms

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6 levels of organization

Chemical >Cellular > Tissue > Organ > System > Organism

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How many organ systems

11

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Lymphatic system

Helps fight infection, balances fluid, helps absorb fats

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Dermis

Accounts for 90% of skin thickness. Have blood vessels, lymph vessels, nerves, hair follicles and sebaceous + sweat glands

Function: Sensation, support, temperature regulation, delivery of nutrients + oxygen

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Hypodermis

Has adipose and connective tissue, contains larger blood vessel and nerve branches.

Functions: Insulation, cushioning, energy storage (fats), allows skin to move.

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Hair

Functions in temperature regulation, protection and sensory

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Nails

Protection

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Sweat glands

Coiled tube structures

Function: Temperature regulation, releasing waste

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4 layers of duodenum

Mucosa (innermost): Has villi and mucous secreting goblet cells - secretion and absorption

Submucosa: Connective tissue with blood and lymph vessels + nerves - secretes mucus that neutralizes chyme from stomach

Muscularis: 2 layers of muscle - generates contractions

Serosa: Loose connective tissue + mesothelium - structural support, anchors duodenum to surrounding structures, protects outer wall.