Myology Flashcards
Striated cardiac muscle
Stacked end to end
Involuntary muscle
Found in the heart
Too specialized to divide
Non-striated (smooth muscle)
Short, spindle -shaped cells
Involuntary muscle-no control
Cells can divide
Found in organs
Striated skeletal muscle
One multinucleated cell
Voluntary muscle
Cannot repair itself
Function of muscle tissue
Movement
Support and maintain posture
Heat production
Muscle belly
Vascular, reddish or meat-like appearance,
Lots of blood and cells,
Tendons
Avascular, tough, white, college fibers muscle to bone
Attachments
Origin-fixed end: least mobile during muscle contraction. Closer to midline
Shoulder
Insertion- mobile end: more movement during muscle contraction, further from the midline
Muscle cells myofibril
Striated skeletal myocyte- muscle cell or fiber
Endomysium
Loose connective tissue
Wrapping around Twinkie
Perimysium
Dense irregular connective tissue
Box
Epimysium
Dense irregular connective tissue
Crate
Facia
Dense irregular connective tissue
Big strong wrapping paper
The predominant structural feature of the muscle fiber is the presence of numerous ______
Myofibrils
Thick filament
Molecular motors
Myosin
Thin filament
Binding sites
Actin