muscular system. muscle facts there are over 600 different muscles in the human body body contains...
TRANSCRIPT
Muscle Facts
• There are over 600 different muscles in the human body
• Body contains three muscle types: skeletal, cardiac, and smooth
• Skeletal muscles are voluntary muscles• Cardiac and smooth muscles are involuntary
Functions of Muscles
• Work with bones to create movement• Gives body shape and support• Protection for vital organs• Vital bodily functions (heartbeat, digestion,
excretion of waste, etc.)• Contractions create heat to maintain a normal
body temperature
Skeletal Muscles
• Make up approx. 40% of body mass• Work in pairs• Named for shape, location, function• Connected to bones by tendons• Can grow in size with repeated resistance work• Can contract quickly, but get tired easily and must rest
Trapezius (upper back, neck)
• Pulls head and upper arms back• “yes” and “no” movement• Work with deltoids to lift arms