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Physiology Presentation Ch. 8, 9, & 10
Brittanee bernal august 28, 2010
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Process of Muscular Movement
v The muscular system is
responsible for the bodys ability to move.
v Every single muscle has
their own specific
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Muscle Movement
Muscle movement happens when
muscular impulses tell the muscle to move.
Muscles have a continuous current
of impulses running through them.
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Basic Functions of Muscles.
The Muscle creates movement Muscle generates heat for the body Creates posture support.
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Bone Growth
q Bone is made up of minerals and is
hard.
q A bone is also made up of living and
none living tissue.
q Bones contain cells called
osteocytes.
q Non living substances in bones are
minerals salts.
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Parts and of the Growing bone
o Osteoblasts- Cells that help form
new bone.
o Osteoclasts- Cells that eat away old
bone.
o Ossification- Fomation of bone due to
the combination of osteoblasts, osteoclasts, minerals, and salts.
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Factors that Affect Bone Development
Nutrition Exposure to sunlight Hormonal secretions Exercise
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Nerve Transmission
v The nerve transmission occurs as a
result of chemical changes across the membrane of the neuron.
v The membrane of an non stimulated
neuron is polarizedthat is, there is a difference in electrical charge between the outside and inside of the membrane. The inside is negative with 11/29/10
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Nerve Transmission Cont.
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