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29 Cards in this Set

  • Front
  • Back
Three Types of Muscle Tissues
Skeletal, Cardiac, & Smooth
Describe skeletal and smooth muscles cells
elongated; muscle fiber
muscle contraction depends on what?
two kinds of myofilaments
The longest muscle cell?
skeletal muscle fibers
_____________ is package into the skeletal muscles, organs that attach to a cover the bony skeleton.
Skeletal muscle tissue
What are the obvious strips you can see on skeletal muscle fibers?
striations
how is skeletal muscle controlled?
voluntary
skeletal muscle is responsible for what?
overall body mobility
It can contract _______ and _______ easily.
Rapidly & tired
Where is cardiac muscle tissue found?
Only The Heart
Are cardiac muscles striated?
Yes
Is cardiac muscle voluntary or involuntary?
involuntary
How does cardiac muscle contract?
at a fairly steady rate set by the hearts pacemaker
Where is smooth muscle tissue found?
In the walls of hollow visceral organs
The role of smooth muscle?
Force fluid and other substances through internal body channels.
Does smooth muscle have striations?
No
Is smooth muscle voluntary or involuntary control?
involuntary
Contractions of smooth muscle are ?
Smooth and sustained
The ability to receive and respond to a stimulus, that is, any change in the environment whether inside or outside the body.
Excitability; Responsiveness; Irritability
In the case of muscle, the stimulus is usually?
Chemical
The ability to shorten forcibly when adequately stimulated.
Contractility
The ability to be stretched or extended .
Extensibility
The ability of a muscle fiber to recoil and resume its resting length after being stretched
Elasticity
Four important functions of muscle
1.Produces movement
2. maintains posture
3. stabilizes joints
4. generates heat
skeletal;
consist of hundreds to thousands of muscle cells, plus connective tissue wrappings, blood vessels, and nerve fibers
muscle
discrete bundle of muscle cells, segregated from the rest of the muscle by a connective tissue sheath.
fascicle
elongated multinucleate cell; has banded (striated) appearance
muscle fiber
rodlike contractile element; occupy most of the muscle cell volume; composed of sarcomeres arranged end to end; appear banded, and bands of adjacent_____ are aligned.
myofibril
the contractile unit, composed of myofilaments made up of contractile proteins
sarcomere