AOS1- skeletal system Flashcards
functions of the skeletal systems
protects the organs
storage of minerals and fats
supports to posture
axial
skull
chest
appendicular
arm
hand
foot leg
2 bone types
cancellous- spongey
compact-surrounds the spongey
5 parts of the back
cervical
thorasic
lumbar
sacrum
coccyx
3 joint types
synovial- free movement, knee
cartilaginous- slight movement,
fixed- no movement, cranium
types of muscles
skeletal
smooth
cardiac
muscle attatchment
muscles are attatched to the bone by tendons, which connective tissue
reciprocal inhibition
muscles that work in pairs in order to allow movement one contracts and one relaxes
sliding filament theory
electrical impulses arrives at the relaxed muscle
calcium is realesed bonding the actin
cross bridge pulls actin to the middle
structure of a muscle
each muscle is made up of muscle fibres
what is muscles fibres made up of
myofibril
fast twitch
white short duration
what are sarcomere made of
proteins called actin which is thick and myosin which is thin
what are myofibrils made of
sarcomeres
