Energy
It is the molecule of energy that is used by muscles for contraction.
What is ATP?
The neurotransmitter that tells the muscles to contract
What is Acetylcholine?
These are the contractile units of the muscle fibers.
What are sarcomeres?
The muscle fibers that have multiple nuclei
What are skeletal fibers?
This collagen fiber holds muscles to bone. In flat muscles it may be replaced by an aponeurosis.
What is a tendon?
The pathway that is used for endurance activity.
What is aerobic respiration?
This myosin head will bind to the actin to form this.
What is a cross bridge?
This is the surrounding to a muscle bundle.
What is the perimysium?
This protein is found in high concentrations in slow twitch muscles which gives them their red appearance.
When you stop using your muscles, this will occur.
What is atrophy?
This causes a decrease in cellular pH and an increase in muscle heaviness.
What is lactic acid?
As the action potential reaches the muscle fiber, these open up and release Calcium into the sarcoplasm.
What are cisternae?
This muscle bundle contains blood vessels and is surrounded by a membrane.
What is a fascicle?
These fibers have characteristics of both of the other types of muscle cells, but are the only ones that are branched.
What are cardiac muscles?
A constant state of muscle tension, even at rest.
What is muscle tone?
This is the first step in aerobic respiration, but it is an anaerobic process that produces 2 Net ATP.
What is Glycolysis?
Calcium binds with this to pull the tropomyosin off of the active sites so contractions can occur.
What is Troponin?
Each muscle fiber (cell) contains these which contain several myosin and actin filaments.
What are myofibrils?
These two types of muscle fibers appear striated meaning striped.
What are cardiac and skeletal?
This is where the muscle attaches to the bone, usually at the proximal end of the bone at a point that does not move when the muscle contracts.
What is muscle origin?
Creatine is an energy storage molecule that holds onto this from the ATP molecule.
What is acetycholinesterase?
A triad is made of these three things.
What are two cisternae and a transverse tubule?
These muscle fibers would be present in the digestive tract to help move food through peristalsis
What are smooth fibers?
When the muscle tension increases and the muscle length shortens during a muscle movement you are doing this type of exercise.
What is an isotonic exercise?