Muscle Structure Flashcards
What is the cell membrane of a sarcomere called?
Sarcolemma
What are muscle fibres bound in?
Endomysium
What is the collective term for a bundle of muscle fibres?
A muscle Fascicle
What is a Muscle Fascicle bound in?
Perimysium
What is muscle bound in?
Epimysium
Which part of a muscle is found between Z lines histologically?
Sarcomere
What are the three types of muscle fibre?
Type I, Intermediate, and Type II
What are the properties of Type I muscle fibres?
Slow oxidative, fatigue resistant
What are the properties of Intermediate muscle fibres?
Fast Oxidative Glycolytic
What are the properties of Type II muscle fibres?
Fast Glycolytic, Fatiguable
What is a T Tubule?
Invaginations of sarcolemma
What is the main function of the Sarcoplasmic Reticulum?
Storing Calcium
Which ion mediates muscle contraction?
Ca2+
What is the functional unit of contraction in muscle called?
Sarcomere
