Muscular System Flashcards
What are 3 function of the muscular system
Movement- voluntary and involuntarily
Support and maintenance of muscle tone- good posture
Production of heat to keep body warm via contraction
What are the 3 types of muscle
Smooth- internal, intestine walls
Cardiac- heart wall
Skeletal bones and move limbs, muscle fibres
What are tendons
White chords, flexible and strong
What is the orgin
Where the muscle is attached to the stationary bone
What is the insertion
Where the muscle is attached to the moving bone
What is the antagonist
The relaxing muscle
What is the agonist
The working muscle
What is concentric contraction
Muscles getting shorter and fatter
What is eccentric contraction
Involves the muscle getting longer and thinner
What is isometric contraction
No movement of body parts
Isotonic contraction
Movement of body parts
What are slow twitch muscles
Contract slowly Produce little force Red in colour Don’t tire easily Endurance
What are fast twitch muscles
Contract quickly and relax quickly
Produce more force (10x that of slow twitch)
Tire easier
Strength and power
What is anaerobic energy
Glucose = energy + lactic acid
High intensity
What is aerobic exercise
Not as intense
Glucose + 02 = energy + c02
