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;
12 Cards in this Set
- Front
- Back
|
Muscle Special Characteristics |
1. Contractility 2. Excitability 2. Extensibility 3. Elasticity |
|
|
Myofilaments |
- specific types of microfilaments that are responsible for the shortening of muscle cells - Two types: Actin and Myosin generate contractile forces |
|
|
Functions of Muscle Tissue |
1. Produce movement 2. Open and close body passageways 3. Maintain posture and stabilize joints 4. Generate heat |
|
|
Three type of muscle tissue? Each type can be characterized by two distinctive features: |
- Skeletal, Smooth, and Cardiac muscle (1) Does it have striations? (2) whether control of contraction is voluntary or involuntary |
|
|
Skeletal Muscle |
- are striated - voluntary contraction - makes up 40% of your body weight - are discrete organs that attach to and move the skeleton |
|
|
Cardiac Muscle |
- tissue occurs only in the wall of the heart - are striated - involuntary contraction |
|
|
Smooth Muscle |
- found in the walls of hollow internal organs other than the heart - no striations - involuntary contraction |
|
|
Epimysium |
an outer layer of dense irregular connective tissue surrounds the whole skeletal muscle |
|
|
Perimysium |
a layer of fibrous connective tissue surrounding each fascicle |
|
|
Fascicle |
a group of muscle fibers |
|
|
Endomysium |
within a fascicle, each muscle fiber is surrounded by a fine sheath of loose connective tissue consisting of mostly reticular fibers |
|
|
Tendon |
all three sheaths (epi-, peri-, and endomysium) converge to form the tendon, the connective tissue structure that joins skeletal muscles to bones |
