Remaining Things needed to learn for SAC Flashcards
What type of muscle contraction occurs when a muscle lengthens under tension?
Eccentric contraction
True or False: Concentric contraction is when a muscle shortens while generating force.
True
Fill in the blank: In isometric contraction, the muscle length __________.
remains the same
Slow twitch Fibre Characteristics:
Red in colour, small in size, Low force production
Fast twitch oxidative Fibre Characteristics:
Pinkish in colour, Medium in size, Medium force production
Fast twitch Glycolytic Fibre Characteristics:
White in colour, Large in size, High force production
Agonist:
Muscle that causes major action
Antagonist:
Relaxes and Lengthens to allow movement to occur. Opposite to Agonist
Recipricol Inhibition:
Process of one muscle contracting (agonist) while the other muscle relaxes (antagonist) to create movement
Which Fibre is designed for mobility and runs the length of the muscle belly?
Fusiform Fibre
Which Fibre is designed to create force and runs at angles to the tendons
Pennate
What is a sarcomere?
A sarcomere is the basic contractile unit of muscle fiber, defined as the segment between two Z lines.
True or False: During muscle contraction, the A band shortens.
False. The A band remains the same length during muscle contraction.
Fill in the blank: The sliding filament theory explains how _____ and _____ filaments interact to produce muscle contraction.
actin, myosin
What happens to the I band during muscle contraction?
The I band decreases in length as the actin filaments slide over the myosin filaments.
Multiple Choice: Which line does not change in length during muscle contraction? A) Z line B) I band C) A band D) H zone
C) A band
Smallest Part of the muscle belly
The Muscle fibre wrapped by endomysium
Medium Sized Part of the muscle belly
The Fasicle Wrapped by perimysium
Largest Part of the muscle belly
The muscle bundle wrapped by epimysium
