skeletal system
this part of the skeleton is composed of several bones and protects the brain
the skull
tiny cells which send signals to the brain. they are also known as nerve cells
neurons
these disc shaped cells transport oxygen from the lungs to the other parts of the body
the red blood cells
these balloon like sacs that inflate and deflate, bring air into and out of the body.
the lungs
these structures, also apart of the skeletal system, crush that has entered the mouth
teeth
the leg bone which connects to the hip
the femur
the central nervous system is composed of the brain as well as this long structure that extends down the back and is the connector between the brain and all other parts of the body
the spinal cord
these blood cells are a vital part of the body's immune system
white blood cells
small snacks in the lungs which allow oxygen and carbon dioxide to move between the lungs and blood stream
the aveoli
food travels down this long tube from the mouth to the stomach
esophagus
the connection between the humerus and scapula in humans is this kind of joint
bundles of fibers found throughout the body that sends electrical impulses to and from the brain to other body structures
the nerves
the chamber in the heart that pushes blood out of the heart and to the other parts of the body
the ventricle
this chemical is in the air we breath and we need to survive
oxygen
the millions of tiny finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed
villi
the internal, and spongy, portion of the bone that produces blood cells
the marrow
a long, slender projection of a nerve cell that typically conducts electrical impulses away from the cells body
an exon
part of the circulatory system and a vital part of the immune system that carries a clear fluid called lymph towards the heart
the lymphatic system
this chemical is exhaled by animals, but plants "breathe" it in and use it to produce oxygen
carbon dioxide
this chemical aids in digestion by speeding up chemical reactions
enzyme
the term of the vestigial tail found in humans
the coccyx
A structure that permits a neuron to pass an electrical or chemical signal to another neuron
the synapse
these chambers bring blood into the heart from elsewhere in the body
the atria (singular: atrium)
I disease in the lungs caused by breathing in harmful chemicals
emphysema (lung cancer)
the name for the soft tissue that hangs down in the back of the mouth
the uvula