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a heart chamber that receives blood from the body or lungs.
the broad band of tissue in plant organs under the epidermis, including the parenchyma cells and...
a strong ring of smooth muscle at the end of the pyloric canal which lets food pass from the...
molecule that forms when carbon dioxide attaches itself to the amino group of a haemoglobin...
a ductless gland that secretes hormones directly into the bloodstream, to be transported to...
the formation of the energy transporting molecule (ATP) to be used in the light independent...