Movement & Support
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What does integument include?
Skin & Derivatives
Gives rise to most derivatives of integument
What are derivatives of integument? (4)
Hair, feathers, claws, horns
Function of Integument (5)
- Temperature Regulation
- Sensory Receptors
- Excretory Functions
What is Epidermis composed of?
Stratified squamos epithelium
What is Dermis composed of?
Dense connective tissue
What might the dermis contain?
Bones of dermal origin
What could be found in the dermis?
Chromatophores (pigment cells)
Function of Skeletal Systems (3)
- Provide rigidity to body
- surfaces for muscles attachment
- protection for internal oragans
Hydrostatic Skeleton in invertebrates
Body fluid is used as an internal hyrdrostatic skeleton
Hydrostatic Skeleton in earthworms
Muscles in body wall contract against the coelemic fluids that are incompressible
Provide rigid elements to which muscles attach
Protective skeleton that often must be molted to allow growth
- Echinoderms & Vertebrates
- Vertebrate endoskeleton is composed of bone & cartilage
What animals are composed of cartilage?
Jawless fish & elasmobranches (sharks)
Found on surface of bone joints of adult vertebrates.
Type of connective tissue with calcified extracellular matrix
Function of Bones
- Protection & Support
- Reservoir for calcium
- Blood cell production
Protists & Comb Jellies use it to move fluid for respiration & other functions
Action produces different whip-like movement
Skeletal Muscle Tissue (4)
- Attached to skeleton
What is each skeletal muscle composed of?
Each fosicle is a bundle of skeletal-
Skeletal Muscle Fibers (3)
- Extremely Long
What does each muscle fiber contain a bundle of?
What is the membrane that surrounds each myofibril?
Two filaments of Myofibrils
- Thin filament composed of actin
- Thick filament composed of myasin
Unit of the myofibril whose function is contractile
Where are the sarcomere found?
Found in a series along the myofibril
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