Lost energy
Maintaining heat (temperature)
A bundle of muscle cells
Fascicle
The contractile unit of a muscle cell
Sarcomere
The neurotransmitter that starts the process.
Acetylcholine (ACh)
The energy storage compound that provides energy for muscle contraction
ATP
A muscle that helps stabilize a joint is called a ...
Fixator
Sphincter
Guarding entrances
The covering of an individual muscle cell
Endomysium
Muscle cell membrane
Sarcolemma
The action potential is created by the movement of which two ions?
Na+ and K+
Cellular respiration breaks down ___________________ to release energy for the cell to use
Glucose
The muscle that has the opposite action to a given muscle
antagonist
The function of Biceps brachii when picking up a baby penguin
Movement
The covering of a bundle of muscles cells
Perimysium
The two "main" proteins of muscle contraction.
Actin and myosin
Ca2+ is released from the ________________________ and binds to ___________________
Sarcoplasmic reticulum, troponin
The quickest way to make ATP
Creatine phosphate (Phosphocreatine)
The end of the muscle that is attached to the bone that will move
Insertion
They make sure your shoulder doesn't pop out when picking up a baby elephant
Stabilizing joints
The outer covering of a muscle
Epimysium
A muscle cell (myofiber) is composed of many smaller "fibers" called ...
myofibrils
What binds to a myosin head to "prime" it for grabbing the actin and moving the actin fiber?
ATP
Anaerobic respiration in muscles is also known as
Lactic acid fermentation or glcolysis
Sprinters rely on which muscle fiber type
Fast twitch (type II)
Stand to attention
Maintaining Posture
The tissue that tendons are made of
Dense regular connective tissue
The infolding (invaginations) of the membrane that carry the action potential deep within the cell.
T-tubules
What does this image show?
The binding sites of actin being exposed when calcium ions bond to troponin, pulling tropomyosin out of the way.
The slowest way to make ATP in the muscles is by the breakdown of what?
Fatty acids
Type of contraction involved in a plank rather than a push-up.
isometric