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12 Cards in this Set

  • Front
  • Back

Muscle Special Characteristics

1. Contractility

2. Excitability

2. Extensibility

3. Elasticity


- 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


an outer layer of dense irregular connective tissue surrounds the whole skeletal muscle


a layer of fibrous connective tissue surrounding each fascicle


a group of muscle fibers


within a fascicle, each muscle fiber is surrounded by a fine sheath of loose connective tissue consisting of mostly reticular fibers


all three sheaths (epi-, peri-, and endomysium) converge to form the tendon, the connective tissue structure that joins skeletal muscles to bones