NSCA Chapter 1
Three types of muscle - answer Smooth, Cardiac, Skeletal
(Skeletal attaches to bone)
Epimysium - answer Connective tissue surrounding the skeletal muscle
Muscle is divided into? - answer Muscle fibres
What is a bundle of muscle fibres called? - answerFascicle
What are fascicle surrounded by? - answerPerimysium
What is muscle fibre separated by? - answerEndomysium
Each muscle fibre is surrounded by what plasma membrane? - answerSarcolemma
What do sarcolemma do? - answerEnclose content of cell
Regulate materials
Conducts action potential
What does the sarcoplasm in muscle contain? - answerWatery solution, contains cell's
energy sources (ATP), Phosphocreatine, glycogen, and fat droplets
What organelles are contained within sarcoplasm? - answerMitochondria, Sarcoplasmic
reticulum
What does the sarcoplasmic reticulum do? - answerStores calcium and regulates
muscle action
Releases calcium into sarcoplasm
Myofibril - answerColumnar protein structure running parallel to length of muscle fibre
Myofilaments - answerBundle of myofibril
Myofilaments are composed of? - answerMyosin (thick) and Actin (thin) filaments
How are myosin molecules structured - answerHead, neck, and tail
How does myosin function?
Head
Neck
Tail - answerHead = Attaching to and pulling on actin filament
Three types of muscle - answer Smooth, Cardiac, Skeletal
(Skeletal attaches to bone)
Epimysium - answer Connective tissue surrounding the skeletal muscle
Muscle is divided into? - answer Muscle fibres
What is a bundle of muscle fibres called? - answerFascicle
What are fascicle surrounded by? - answerPerimysium
What is muscle fibre separated by? - answerEndomysium
Each muscle fibre is surrounded by what plasma membrane? - answerSarcolemma
What do sarcolemma do? - answerEnclose content of cell
Regulate materials
Conducts action potential
What does the sarcoplasm in muscle contain? - answerWatery solution, contains cell's
energy sources (ATP), Phosphocreatine, glycogen, and fat droplets
What organelles are contained within sarcoplasm? - answerMitochondria, Sarcoplasmic
reticulum
What does the sarcoplasmic reticulum do? - answerStores calcium and regulates
muscle action
Releases calcium into sarcoplasm
Myofibril - answerColumnar protein structure running parallel to length of muscle fibre
Myofilaments - answerBundle of myofibril
Myofilaments are composed of? - answerMyosin (thick) and Actin (thin) filaments
How are myosin molecules structured - answerHead, neck, and tail
How does myosin function?
Head
Neck
Tail - answerHead = Attaching to and pulling on actin filament
