locomotion Flashcards
what are the functions of the skeletal system?
provides basic shape
provides support for the body
allows the muscular system to produce movement-locomotion
protection of vital organs
what are the 2 functional parts of the skeletal system?
axial skeleton: head neck trunk appendicular skeleton: limbs pectoral & pelvic girdle
describe cartilage
resilient, semirigid CT
in areas for flexibility
articular cartilage reduces friction
avascular
describe bone
support protection mechanical basis (leverage/locomotion) storage new cells
what are the 2 types of bone and how are they distinguished?
compact
spongy
amount of solid matter and size of space
describe compact bone
strength for weight bearing
in long bones it is found in the middle of the shaft
long bones have elevations (ridges, crests and tubercles)
what are the 5 classifications of bones?
tubular=long bones cuboidal=short bones protective=flat bones irregular bones sesamoid bones
what are bone markings?
where tendons, ligaments or fascia is attached
where arteries lie adjacent
what are bone formations?
passage of a tendon to improve leverage
describe standing at ease
few back and lower limb muscles are active
mechanical arrangement means minimal muscular activity
hip & knee joints most stable
ankle unstable
tendency for body to fall forward
what is opposition and reposition?
bringing thumb and pinky together- and back