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The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it
Autonomic nervous system
The system of nerves that carries instructions from the CNS to the body's organisms
Tiny thin-walled blood vessels that allow the exchange of gasses and nutrients between the blood and cells
The process by which an organism breaks down its food into small units which can be absorbed
A chemical released in the bloodstream that sends signals to specific cells, causing them to change their behavior in specific ways
The process by which a living organism takes energy from its surroundings and uses it to sustain itself, develop, and grow
Motor nervous system
The system of nerves which carries instructions from the CNS to the skeletal muscles
The process by which a plant uses the energy of the sunlight and certain chemicals to produce its own food
Sensory nervous system
The system of nerves which carries information from the body's receptors to the CNS
A weakened or inactive version of a pathogen that stimulates the body's production of antibodies which can destroy the pathogen
The process by which the stem of a plant can form new roots and develop into a mature plant
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