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Chapter 9 Muscular System
18 cards·by Group 3
What are the 3 energy sources for contraction?
Fatty acids, Creatine phosphate, Glucose
What are the 3 ways muscles use energy?
aerobic, anaerobic and the break down of creatine phosphate
What does ATP stand for?
adenosine trisphosphate
What is used for a small burst of energy?
Phosphocreatine
What provides a slight boost for short-term performance?
Anaerobic Endurance
What is stored Glucose to make ATP without oxygen?
Glycogen
When does oxygen debt occur?
When skeletal muscles are used for more than 1-2 minutes
What is oxygen debt?
The amount of oxygen owed to the body to recover
What does Aponeurosis attach to?
Other muscles
How does muscle fatigue occur?
if blood supply to a muscle is stopped
What are the 3 groups muscles are classified in?
Antagonist, Agonist, Synergist
What are two attachments of skeletal muscles?
Origin and insertion
What is origin?
The attachment to the bone that is more fixed
What is antagonist?
a muscle that counteracts the action of another muscle
What two things function together as a motor unit?
Muscles and nerves
What is the loss of muscle mass and strength?
Atrophy
What is Atrophy caused by?
bed rest and immobility
What is extreme weakness and fatigue associated with?
Atrophic muscle groups