the process by which the body's internal environment is kept stable in spite of changes in the external environment.
basic unit of structure and function in a living organism.
the control center that directs the cell's activities.
a group of similar cells that perform the same function.
a structure that is composed of different kinds of tissue.
a group of organs that work together to perform a major function.
inner framework of bones in your body.
26 small bones that make up your backbone.
largest bone in your leg, thigh bone.
connect your bones together.
connect your muscles to your bones.
soft connective tissue covering the ends of bones at joints so bones do not rub together.
hard dense layer just under the outer membrane of the bone.
soft connective tissue where blood cells are formed and fat is stored (there are two types: yellow and red).
a condition where the body's bones become weak and break easily.
muscles are not under your conscious control.
muscles that are under your conscious control.
muscles appear banded.
muscles do not have the bands.
involuntary muscle found only in the heart, this muscle is striated.
attached to the bones of your skeleton, they are voluntary and striated muscles.
found inside many internal organs, this tissue is involuntary, non-striated and reacts very slowly.
organ covering your body.
outside layer of the skin.
lower layer of the skin.
area where strands of hair grow.
opening in the skin for perspiration to reach the surface.
disease in which some skin cells divide uncontrollably, generally caused by overexposure to sunlight or tanning beds years earlier.
pigment found in skin that gives skin its color, the more of it the darker the skin, exposure to sun stimulates its production.
can contract and shorten
directs and controls the processes
provides support for your body (bone and fat)
covers surfaces of your body (i.e. skin and the lining of the digestive system).
the reaction of your body to potentially threatening, challenging, or disturbing events.
Five major functions of the skeletal system
provides shape and support; enables you to move (provides a place for muscles to attach); protects your organs; produces blood cells; stores minerals and other materials until your body needs them.
place in the body where two bones come together. (4 types: hinge (knee), ball-and-socket (hip), pivot (neck), and gliding (wrist)).
allows for forward and backward motion. (ex. knee and elbow)
allows the greatest range of motion. (ex. hips and shoulders)
allows one bone to rotate around another. (ex. neck)
allows one bone to slide over another. (ex. wrist or ankle)
The structure of the bone is both strong and lightweight. Bones can absorb more force without breaking than concrete or granite rock. Bones are strong because they are packed with minerals - primarily phosphorus and calcium.
even after you are grown new bone continues to form. Every time your bones absorb the force of your weight, they respond by making new bone tissue.
Major function of muscular system
to allow movement.
Major functions of the skin
protects the body from injury, infection, and water loss; regulates body temperature; eliminates wastes; gathers information about the environment; and produces vitamin D in the sunlight.