Muscle Contractions Flashcards
What is the function of tropomyosin
To prevent actin and mission from creating a crossbridge and generating unwanted contractions
How does tropomyosin block interactions between myosin and actin
It wraps around myosin
What does the sarcoplasmic reticulum produce
Calcium
What is the endomysium
The loose connective tissue that covers each muscle fibre
What is the name of the neurotransmitter that binds at the motor end plate to start depolarisation
Acetylcholine
What is the thick filament in the sliding filament theory
Myosin
What is the thin filament in the sliding filament theory
Actin
What breaks down ATP to release energy
Head of myosin
What band shortens during contraction
I band
Where does muscle cell shortening take place
Sarcomere
What happen a to a cell in a hypertonic solution
The cell will shrivel as water moves out of it
Which muscle fibres fatigue quicker
Fast twitch
What is the 3 muscle tissues
Skeletal, cardiac and smooth
Which 2 muscle tissue is striated
Skeletal and cardiac
