Unit 10: Muscular System + Quiz

Weber State HTHS 2110

Perimysium

Tissue that surrounds fascile

Epimysium

Tissue that surrounds entire muscle

Endomysium

Tissue that surrounds a muscle fiber

The functional (and smallest) unit of skeletal muscle is the sarcomere T or F?

True

The ________ are rope-like connections between muscles and bones and result from the fusion of periosteum with the connective tissue of muscle. 

tendon

Origin

the place where a muscle ‘begins’, typically on the bone that is less moveable and proximal

Insertion

the place where a muscle ‘ends’, typically a moveable part– Usually this is distal

Action

what the muscle does when it contracts

Concentric Muscle Contraction

Muscle shortens while contracting

Eccentric muscle contraction

Muscle lengthens while contracting

Isometric

Muscle length does not change while contracting

Agonist Muscle Relationship

Muscle that does most of the work for a certain movement

Antagonist Muscle relationship

Muscle that opposes agonist movement

Synergist

Assists agonist with movement

Fixator

Stabilizes the muscle origin