Anatomy of Muscles
Functions of Muscles
Looking Ahead
Muscle Fiber Components
Misc.
100
A muscle cells is also referred to as this
What is a muscle fiber
100
The three functions of muscles
What is to produce heat, to produce movement and generate force
100
A state of muscle rigidity
What is rigor mortis
100
The thick filaments within a muscle fiber
What is myosin
100
Where the functional unit of a muscle can be found
What is between the two Z-lines
200
The sarcomere
What is the functional unit of a muscle
200
These two structures come closer together during a muscle contraction
What is the two Z-lines
200
Actin being pulled over myosin is given a name for its process. We call this what?
What is the sliding filament theory
200
When myosin binds to actin these have been formed
What is cross-bridges
200
Without this protein muscles would lack stability and there would be paralysis or even death
What is titin
300
The cell membrane of a muscle
What is the sarcolemma
300
The contractile proteins of a cell
What is the myofilaments
300
Without these two "items" there would absolutely be no muscle contraction. (Post AP)
What is ATP and Calcium
300
This protein binds with tropomyosin, on actin, and with calcium
What is troponin
300
The binding of this causes tropomyosin to rotate revealing actin active sites for myosin heads to bind to
What is calcium
400
The plasma portion of a muscle
What is the sarcoplasm
400
The regulatory proteins of a muscle
What is troponin and tropomyosin
400
This molecule binds to myosin heads causing them to be cocked. What site is this?
What is ATP at the ATPase site
400
Tropomyosin blocks this
What is actin active sites
400
Within the sarcoplasmic reticulum these structures are on the outer ends and help store calcium
What is lateral sacs/terminal cisternae
500
Carries the AP through the muscle fiber
What is the transverse tubules
500
The structural protein of muscles
What is titin
500
A molecule that stores ATP to be used as the first source of energy
What is creatine phosphate
500
This actually causes the power stroke
What is ADP and Pi leaving the myosin head
500
The area within the muscle fiber that you can fins both myosin and actin
What is the A-band
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