Humans
and animals have different movement systems with plants, humans and
animals can move part orall of his body, while the plants are not
able to do that, the motion system in humans and animals made up of
bones and muscles, bones locomotor referred to as passive, because
just follow the control muscle, whereas muscle locomotor referred to
as active, because it has the ability to contract, so as to move the
bone, cooperation between the bones and muscles, resulting in
movement that is consistent, flexibel, and no stiff like a robbot.
Among other of the functions of bones is to support frame and
supporting the establishment of the body, giving the body shape,
protects vital organs such as the brain, heart and lungs, the muscles
attach order, and the formation of blood cells and the accumulation
of calcium.
Human
skeletal disorder also can suffer, disturbances in bone and joints
can be differentiated into fice categories, the first categories is
the mechanical disorders, mechanical disorders can cause fissure,
fracture, bruise joints, and explained joints. The second
disturbances is a physiological disorder of bone, this disorder may
result in hydrocephalus, mycrocephalus, osteoporosis, and rickets. A
disorder that third attitude is wrong habits, such as lordosis,
kyphosisi and scoliosis. The fourth disorder is joint problem, such
as disiocation, sprains and artritis. And the last disorder is bone
and joint infections, such as exudative arthritis, arthritis sicca,
paralyzed joints, and necrosis.
While
muscle is active locomotor, based of types, muscle can be
differentiated into three types. First type is smooth muscle,
cardiac muscle, and striated muscle, muscles work in pairs to produce
motion, muscle pairs work againts, each other, and their end is the
antagonist muscle, working antagonistic muscle can cause several
types of motion such as extension, abduction, depression, and
supination, muscle can also disorders such as cramps or spasms,
tetanus, polio, muscular hypertrophy and abdominal hernias.
