Muscle Vocabulary from Notes

January 20, 2011

Vocabulary to learn…

• Myofibrils• Myosin• Actin• Sarcomere• I bands• Z lines• A bands• H zone• Sarcoplasmic reticulum• Thin filaments• Thick filaments• Transverse tubules (T tubules)

Vocabulary to learn, cont.• Motor neurons• Synapse• Motor end plate• Neuromuscular junction• Motor unit• Troponin and tropomyosin ( T & T)• Sliding filament theory/model• Oxygen debt• Muscle fatigue• Threshold stimulus• Latent period• Twitch• Origin & Insertion of a muscle• Agonist, synergist, and antagonist muscle functions

Vocabulary to learn, cont.• Contracture• Convulsion• Fibrillation• Fibrosis• Myalgia• Myokymia• Myology• Myoma• Myopathy• Myotomy• Paresis• Torticollis• Muscular dystrophies• Myasthenia gravis

Concepts to learn

• What is the relationship between cellular respiration and heat production?

• How are lactic acid, oxygen debt, and muscle fatigue related?

• Compare/contrast ATP production in aerobic respiration and anaerobic respiration

Thinking Critically

• An Olympic sprinter typically has more than 80% fast twitch muscle fibers.

• An Olympic marathoner typically has more than 90% slow twitch muscles.

• An average person has about half fast twitch and half slow twitch muscles.

• ** Explain the reasoning behind these statistics.