Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
What are skeletal muscles responsible for |
All the movement for the body and all of its joints |
|
|
How many skeletal muscles are in the human body |
600 |
|
|
How many skeletal muscle pairs are in the human body |
215 |
|
|
Aggregate muscle action |
When muscles work in groups as opposed to independently to achieve a given joint function |
|
|
What determines the name of a muscle |
- distinctive characteristics - visual appearance - anatomical location - function |
|
|
Flat muscle |
thin and broad |
|
|
Fusiform muscles |
spindle-shaped with a central belly that tapers to tendons on each end |
|
|
Strap muscles |
uniform in diameter with all their fibers arranged in a long parallel manner |
|
|
Radiate muscles |
triangular, fan-shaped, convergent |
|
|
Sphincter (circular) muscles |
endless strap muscles that surround openings and function to close the openings upon contraction |
|
|
unipennate muscle fibers |
run obliquely from a tendon on one side only |
|
|
Bipennate muscle fibers |
run obliquely from a central tendon on both sides |
|
|
multipennate muscles |
have multiple tendons with fibers running diagonally between them |
|
|
Irritability/Excitability |
the muscle property of being sensitive or response to chemical, electrical, or mechanical stimuli |
|
|
Contractility |
the ability of a muscle to contract and develop tension or internal force against resistance when stimulated
|
|
|
Extensibility |
Is the ability of muscle to be passively stretched beyond its normal resting length |
|
|
Elasticity |
is the ability of a muscle to return to its original resting length following stretching |
|
|
Gaster |
the central fleshy portion of the muscle |
|
|
Retinaculum |
a fascial tissue that retains tendons close to the body |
|
|
Static contractions |
significant amounts of active tension developed in a muscle to maintain a joint angle in stable position |
|
|
Dynamic contractions |
Active tension in a muscle either change or control the joint angle is caused by external forces |
|
|
Isokentics |
a specific technique that may use any or all of the different types of contractions |
|
|
Primary movers |
when muscles contribute significantly to movement |
|
|
Helping Synergists |
have an action in common but also have actions antagonistic to each other |
|
|
True Synergists |
contract to prevent an undesired action of the agonist |
|
|
Palpation |
way of determining muscle action |
