Muscular System Flashcards
What is the first function of the muscular system?
- Produces movement
What is the second function of the muscular system?
- Stabilizes joints
What is the third function of the muscular system?
- Stabilizes posture
What is the fourth function of the muscular system?
- Produces heat
What is the fifth function of the muscular system?
- Moving of substances in the body
What is the sixth function of the muscular system?
- Stabilizes body position
What are the 3 e’s and the one c (the things the muscle tissue must do)?
- Contractility (must contract + expand)
- Extensibility
- Excitability
- Elasticity
What is the first layer of the muscle constructed of?
Whole
What is the second layer of the muscle constructed of?
Fascicle
What is the third layer of the muscle constructed of?
Fiber
What does myofibril contain?
Sarcomere
What does sarcomere contain?
Myosin and actin; two chemical structures that latch onto one another
What is the Sliding Filament Theory?
The way myosin and actin latch in waves