Terms in this set (50)
How many muscles are in the body?
How much % is muscle of body weight?
The study of muscles
What can muscles only do?
What do muscles work in?
What are the 3 functions of muscles?
Movement of skeleton, maintenance of posture, generation of heat
Involuntary, found in hallow internal organs
Muscle found in heart
Muscle attached to skeleton
Muscles are arranged in bundles called....
Connective tissue around each fiber in a fascicle is called the...
Connective tissue around each fascicle is the...
The entire muscle is covered with...
All connective tissue merges to form what?
Connects muscle to a bone
Performs the movement (generally flex)
Produces opposite movement (extend)
Steady body parts and assist prime mover
What are muscles stimulated by?
A single neuron and al the muscle fibers it stimulates
Where a nerve and muscle meet
Main neurotransmitter in muscle contraction
Muscle stimulation is also called..
Thin and light; filament that helps cause a muscle to contract
Thick and dark with projecting heads; filament that helps contract a muscle
One contracting unit
Source of energy
Stores oxygen in muscles
Stores glucose for muscles
During rest, these block the sites on actin filaments where cross-bridges can form
Troponin and tropomyosin
Uncovers binding sites so cross-bridges can form between actin and myosin
Can be used to male ATP when ATP supply is depleted
Five effects exercise has on muscles
Improved breathing, vasodilation, improved endurance, better circulation, increases bone strength
Widening of blood vessels, allowed blood to flow more freely to muscles
Enlargement of muscles
Increases number of mitochondria
When you exercise without oxygen
What causes muscles to burn
Partial state of muscle contraction that occurs when the ,uncles are not being used
Increases in muscle tension but no movement occurs (yoga, wall sits)
Increase muscle tension and movement occurs (running)
The less moveable attachment of a muscle
The moveable attachment of a muscle
A broad sheet that attaches muscle to bone or to other muscles
Connects bone to bone
The wasting or decrease in size of a muscle
Involves tearing of ligaments due to excessive or abnormal movement
Pain, stiffness and swelling due to overuse
Chronic muscular fatigue
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