structure and function of muscles Flashcards
how many named bones in the body is half a person’s body weight
700
what are most skeletal muscles are attached to bones by
tendon
what are tough bands of connective tissue that have a strong collagen fibers
tendons
what fibers attach the muscle to the bones
collagen fibers
how do muscles move
contracting and shortening their length
what do the contracting and shortening of muscle length do
pull on tendons moving one bone closer to another bone that is stationary
how are bones named
based on location, shape, and size
how do skeletal muscles often work
work in groups to produce movement
what do muscles contain
long myofibrils made of sarcomere units
what do the myofibrils of sarcomere units consist of
long strands of protein called “actin”
what is actin
thin filaments
what is myosin
thick filaments
