Muscle Tissue Flashcards
1
Q
Fiber
A
Long cylindrical cells that make up skeletal muscle (10-100 micrometers)
Multinucleate
2
Q
Actin
A
Thin filament; contractile proteins; actin and myosin slide past each other during muscle activity to bring about contracting and shortening of muscle cells
3
Q
Myosin
A
Thick filament; contractile proteins; actin and myosin slide past each other during muscle activity to bring about contracting and shortening of muscle cells
4
Q
Myofilament
A
Small threadlike structures that make up the myofibrils; composed of two contractile proteins: actin and myosin
5
Q
Sarcolemma
A
Plasma membrane of the muscle fiber
6
Q
Role of NMJ in muscle function
A
Motor neurons stimulate voluntary skeletal muscles with nerve impulses
