Function
Responsible for locomotion, facial expressions, posture, and respiratory movements, other types of body movement
Skeletal Muscle Tissue
A long, cylindrical, multinucleated cell that contains bundles of protein filaments called myofibrils
Skeletal Muscle Cell
The two muscle cell types which are striated
Skeletal and Cardiac
Attached to bones
Skeletal Muscle Cells
The skeletal muscle cell is formed after the
fusion of multiple precursor cells, called
____, a process that is called ______.
Myoblasts, Myogenesis
A major source of the movement of blood and autorhythmic
Cardiac Muscle Tissue
Spindle-shaped (fusiform) with a single, central nucleus and lack striations because their actin and myosin filaments are not arranged in sarcomeres
Smooth Muscle Cells
Has voluntary and involuntary reflexes
Skeletal Muscle Cells
Heart
Cardiac Muscle Cells
Rank the muscle tissue sheaths from most external to most internal
1. Epimysium – surrounds the entire muscle
2. Perimysium – surrounds each fascicle
3. Endomysium – surrounds each muscle fiber (cell)
Propel urine, mix food in the digestive tract,
dilating/constricting pupils, regulating blood flow
– In some locations, autorhythmic (generates its own rhythm)
Smooth Muscle Tissue
Striated, branched cells with a single, centrally located nucleus and many mitochondria
Cardiac Muscle Cells
Both muscle cell types that have involuntary reflexes
Smooth and Cardiac Muscle Cells
Walls of hollow organs, blood vessels,
eyes, glands, and skin
Smooth Muscle Cells
List the organization of skeletal muscular tissue from largest to smallest
Muscle, Fascicle, Muscle fiber (cell) , Myofibril, Sarcomere, Myofilaments