Muscular System #1
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How many muscles are in the body?
650
2 functions of the muscular system
• Movement • Heat production • Control of the body’s openings and passages • Body form and shape to maintain posture • ) Stability
What type of muscle is attached to bones by tendons?
Skeletal
What type of muscles produces atrial and ventricular contractions which pump blood from the heart?
Cardiac
What type of muscles is found on organ walls?
Smooth muscles
What are valve-like structures formed by muscles that help control the movement of substances in and out of passages?
Sphincters
What is the anatomical name for the muscle fibers?
Myocytes
What is the anatomical name for the cytoplasm of the cell?
Sacroplasm
What characteristic of muscle can receive and respond to stimulation?
Excitability
What characteristic of muscle can shorten and thicken?
Contractility
What characteristic of muscle means to lengthen?
Extensibility
What is the anatomical term that means after contracting or lengthening, tissues always want to return to their resting state?
Elasticity
What type of control is skeletal muscle under?
Under conscious
What type of control is smooth muscle under?
Not under conscious
What type of control is cardiac muscle under?
In the heart only
What type of muscle tissue produces body movements and facial expressions?
Skeletal
What type of muscle tissue pumps blood through the heart?w
Cardiac
What type of muscle tissue moves contents through internal organs?>
Smooth
What is the anatomical name of the cell membrane?
Sacrolemma
The prefix myo- means?
Muscles
Myofibrils
Long structures in the sarcoplasm