Fundamentals of Anatomy & Physiology: Muscle Tissue Flashcards
Muscle tissue consists of cells that are highly specialized for ________________.
Functions of Skeletal Muscle
- produce movement
-maintain body temperature
-guard body entrances and exits
-support soft tissue
At the end of the muscle, the collagen fibers of the epimysium, and each perimysium and endomysium, come together to form a _____________.
-dense layer of connective tissue that surrounds an entire skeletal muscle
Nerves and blood vessels that service a muscle fiber are located in the connective tissue of its _____________.
-a group of muscle fibers that are encased in the perimysium
-delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together
-bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone.
*ATTACHES MUSCLE TO BONE
Put the following structures in order from superficial to deep:
1. muscle fiber
Interactions between actin and myosin filaments of the sarcomere are responsible for __________________.
In a sarcomere, thick filaments are linked laterally by proteins of the ___________.
The advantage of having many nuclei in a skeletal muscle fiber is_________________.
the ability to produce nutrients for muscle contraction
Skeletal muscle fibers are formed from embryonic cells called _________________.
-the repeating unit of a skeletal muscle fiber
-repeating unit of striated myofibrils
-the plasma membrane of a skeletal muscle fiber
-have many nuclei
-storage and release site for calcium ions
-thin filaments are anchored here
-region of the sarcomere containing thick filaments
-the skeletal muscle complex consists of a transverse tubule and two terminal cisternae
Cross-bridges are portions of_______________.
-the area in the center of the A band that contains no thin filaments