Terminology 1- Neuromuscular System
The general name of a chemical messenger.
Neurotransmitter
The thick protein filament that makes up the sarcomere.
Myosin
The general term given to an energy pathway that does not require the use of oxygen.
anaerobic
Calcium “docks” on troponin. What comes next?
Tropomyosin moves away, revealing the binding sites.
The name of the receiving portion of a neuron.
Dendrites
The space between the motor neuron axon terminals and the muscle membrane.
Neuromuscular junction (synaptic cleft ½ points)
The term given to the binding between actin and myosin.
Cross-bridge
Another name given to the intermediate metabolic pathway for ATP resynthesis- glycolysis.
anaerobic lactic
Contents of the vesicles are “spit” out in the space between the motor neuron and the muscle membrane. What comes next?
Ach received into the muscle receptors on the sarcolemma, stimulating the release of calcium
The role of ATP in the sliding filament theory.
Power stroke and detaching the myosin head
The full name of the chemical responsible for signalling muscle contraction.
Acetylcholine
Protein responsible for binding calcium.
Troponin
The process of converting waste product like lactic acid into usable glucose.
Cori Cycle
A phosphate group from an ATP molecule is broken off. What comes next?
Energy release, resulting in ADP
The yield of ATP resynthesis as a result of cellular respiration (aerobic system)
36ATP
The term given to the motor neuron and the muscles that it innervates.
Motor unit
The limiting factor in muscle contraction would be…
No more Ach being sent, therefore no calcium.
The oxygen storing unit in muscles.
Myoglobin
After approximately 30 seconds of exercise the body’s ATP-PC stores are used up. What comes next?
Glycolysis takes over, uses glucose as the primary source of ATP re-synthesis.
The structural change to the sarcomere because of muscle contraction
Sarcomere shortens, z-lines get closer together because actin moves towards the M-line
The portion of the neuron responsible for quick transmission of an electrical signal down the axon.
Myelin Sheath
The portion of the sarcomere that gets darker during contraction.
H-zone
The muscle fibre type that is associated with quick, forceful muscle contraction
Type IIB Fast-Glycolytic
Lactic acid builds up in the blood abruptly above resting levels. What comes next?
Lactate threshold is reached, ventilation increases.
The order of nutrient utilization by the body.
Carbohydrates then fats then proteins