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Questions and Answers
Which factor contributes to the faster breakdown and replenishment of ATP in type II muscle fibers?
Which factor contributes to the faster breakdown and replenishment of ATP in type II muscle fibers?
- Greater mitochondrial size
- More myosin ATPase activity (correct)
- Larger myelin sheaths
- Increased myoglobin concentration
What is the main process involved in replenishing ATP once phosphocreatine runs out?
What is the main process involved in replenishing ATP once phosphocreatine runs out?
- Glycolysis (correct)
- Krebs cycle
- Anaerobic respiration
- Oxidative phosphorylation
What contributes to the fatigue resistance of muscle fibers?
What contributes to the fatigue resistance of muscle fibers?
- Mitochondrial size and number (correct)
- Myelin sheath thickness
- Glycolytic enzyme activity
- Creatine kinase activity
What is the primary function of myelin sheaths in nerve axons?
What is the primary function of myelin sheaths in nerve axons?
What is the main source of ATP production in the presence of oxygen?
What is the main source of ATP production in the presence of oxygen?
Which muscle fiber type is more metabolically powerful with respect to fast twitch fibers?
Which muscle fiber type is more metabolically powerful with respect to fast twitch fibers?
What is the role of phosphocreatine in ATP replenishment?
What is the role of phosphocreatine in ATP replenishment?
What is the primary factor determining the conduction velocity of nerve axons?
What is the primary factor determining the conduction velocity of nerve axons?
Which process allows action potentials to 'leap' from one node to another in nerve axons?
Which process allows action potentials to 'leap' from one node to another in nerve axons?
What is the main function of myoglobin in muscle fibers?
What is the main function of myoglobin in muscle fibers?
Which type of muscle fiber mainly performs oxidative phosphorylation?
Which type of muscle fiber mainly performs oxidative phosphorylation?
What is the primary function of Nodes of Ranvier in nerve axons?
What is the primary function of Nodes of Ranvier in nerve axons?
What is the primary function of myoglobin in muscle fibers?
What is the primary function of myoglobin in muscle fibers?
What is the role of Nodes of Ranvier in nerve axons?
What is the role of Nodes of Ranvier in nerve axons?
What contributes to the faster breakdown and replenishment of ATP in type II muscle fibers?
What contributes to the faster breakdown and replenishment of ATP in type II muscle fibers?
What is the main source of ATP production in the presence of oxygen?
What is the main source of ATP production in the presence of oxygen?
What is the primary function of myelin sheaths in nerve axons?
What is the primary function of myelin sheaths in nerve axons?
Which factor contributes to the fatigue resistance of muscle fibers?
Which factor contributes to the fatigue resistance of muscle fibers?
What is the main function of motor units recruitment in muscle fibers?
What is the main function of motor units recruitment in muscle fibers?
What is the primary factor determining the conduction velocity of nerve axons?
What is the primary factor determining the conduction velocity of nerve axons?
What is the main process involved in replenishing ATP once phosphocreatine runs out?
What is the main process involved in replenishing ATP once phosphocreatine runs out?
What is the primary function of phosphocreatine in ATP replenishment?
What is the primary function of phosphocreatine in ATP replenishment?
What is the main function of muscle fiber diameter and capillarization in oxygen delivery?
What is the main function of muscle fiber diameter and capillarization in oxygen delivery?
What is the main function of motor units in muscle fibers?
What is the main function of motor units in muscle fibers?
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