Muscular System Flashcards
The ability for a muscle to shorten or contract when it receives adequate stimulation?
Contractility
A muscle’s ability to stretch or lengthen when FORCE is APPLIED
extensibility
Elasticity of a muscle is able to… ?
recoil or return to a normal resting length when stretch or shortening force is REMOVED.
When a muscle is able to respond to stimulus, this is called…?
Irritability
Sarcomeres contain?
Thick and thin myosin filaments
Type 1 fibers are responsible for…?
Fast twitch, endurance, and aerobic exercise
Slow twitch fibers are called?
Type 2
Muscle and tendon connection is called ____
musculotendinous junction
Name 3 parallel muscle fibers and the main function that they do
- Strap
- Fusiform
- Triangular
They are used for ROM
Unipennate, Bipennate, and Multipennate are an example of what kind of muscle fiber?
Oblique muscles. They are used more for Force
The hamstring muscles are 2 joint muscles on the posterior thigh that can extend the hip and flex the knee. When there is sufficient tension to perform either hip extension or knee flexion, but it cannot be done at the same time. This causes the muscle to have insufficient power. This is an example of what?
Active insufficiency that occurs ONLY on the agonist
The hamstring is long enough to be stretched over each joint individually. ___ occurs to the antagonist.
Passive insufficiency
Isometric contraction
The muscle contracts, producing NO change in force without changing the length of the muscle
Isotonic Contraction
when a muscle contracts and the muscle length and joint angle changes
Concentric contraction
muscle shortening
origin and insertion move toward another
