Skeletal Muscle System
What delivers oxygen and nutrients to produce ATP
Blood vessels
What is the storage site for calcium in the sarcoplasmic reticulum
Cisternae
Attached to troponin
Contracting fiber
Describe the location of the Z disc
End of a sarcomere
Describe the location of the A band
End to end of the thick filament, overlaps with thin filament
thin connective tissue investing each muscle cell
Endomysium
Just deep to the deep fascia
Epimysium
A discrete bundle of muscle cells
Fascicle
A muscle cell
Fiber
A long, filamentous organelle found within muscle cells that has a banded appearance
Myofibril
Actin-, myosin-, or titin-containing structure
Myofilament
What is the thick filament made up of
Myosin
What happens to thick and thin filaments when muscles contract
Nothing changes between contraction and expansion for the thick and thin filaments
Connective tissue surrounding a fascicle
Perimysium
Bound to sarcoplasmic reticulum pumps
Recovering fiber
Plasma membrane of the muscle cell
Sarcolemma
Contractile unit of muscle
Sarcomere
What is a tubular network that surrounds each myofibril
Sarcoplasmic reticulum
Cordlike extension of connective tissue beyond the muscle, serving to attach it to the bone
Tendon
List the order of the muscular anatomy
Tendon -> muscle -.> fascicle -> muscle fiber -> myofibril -> sarcomere -> thin and thick filament
Describe the location of the M line
The middle of the sarcomere
Why is there a limit to the amount of shortening that can occur in a sarcomere during muscle contraction
The thick filament can't go through the thin filament
Describe the location of the H zone
The thick filament, with no overlap of thin and thick filament
Describe the location of the I band
The thin filament, with no overlap of thin and thick filament
What coats the thin filament while it is resting and what holds it in place
Tropomyosin which is held in place by troponin
What is the thin filament made up of
Twisted actin molecules
In terminal cisternae
Unsimulated fiber
