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Define the terms insertion and origin, in relation to muscle movement
- 1) Attachment to a moveable bone
- 2) Attachment to an immovable bone
List three functions of muscle
Movement, Heat production, and Posture
Explain muscle fatigue, the oxygen debt, and how the oxygen debt is ''paid''
Oxygen is required to move ATP
Differentiate among the endomysium, perimysuim, and epimysium
- 1) Covering of each individual muscle fiber
- 2) Covers each fasicle
- 3) Covers all fasicle
Define rigor mortis. Why does it occur?
Stiffening of the joints and muscles of a body after death. ATP is no longer produced
What is the difference in tendons and ligaments?
Tendons attach to bones and ligaments attach bone to bone
What is one contractile unit of a muscle?
What are the three jobs at ATP during muscle contraction?
- 1) Energizing the power stroke
- 2) Disconnecting the myosin crossbridge
- 3) Transporting calcium
What are the six molecules involved in a skeletal muscle contraction?
Myson, Actin, Tropomysin, Troponin, ATP, Calcium ions
What is the length of one sarcomere?
Z line to Z line
Where does calcium bind?
What is a cross bridges?
What are the two filaments and the difference in each?
- Myosin (Thick)
- Actin (Thin)
Found in internal organs
Attached to bone
What is a bundle of muscle fibers called?
Each fascicle is surrounded by _____
The whole muscle is covered by ___