{lacteal}{}{Lymphatic capillary associated with a villus of the small intestine.}
{lacuna [lacunae]}{}{Small space or cavity; potential space within the matrix of bone or cartilage normally occupied by a cell that can only be visualized when the cell shrinks away from the matrix during fixation.}
{lamella [lamellae]}{}{Thin sheet or layer of bone.}
{lamina propria}{}{Layer of connective tissue underlying the epithelium of a mucous membrane.}
{large intestine}{}{Tubelike structure that connects the small intestine with the anus and absorbs water and electrolytes from the chyme in the alimentary canal.}
{larynx}{}{Structure between pharynx and trachea that houses the vocal cords.}
{lateral}{}{Pertaining to the side.}
{ligand}{}{Chemical signal that communicates a message to a membrane-bound or intracellular receptor.}
{limbic system}{}{Parts of the brain involved with emotions and olfaction; includes the cingulate gyrus, hippocampus, habenular nuclei, parts of the basal ganglia, the hypothalamus [especially the mammillary bodies, the olfactory cortex, and various nerve tracts [e.g., fornix]].}
{lipid}{}{Substance composed principally of carbon, oxygen, and hydrogen; contains a lower ratio of oxygen to carbon and is less polar than carbohydrates; generally soluble in nonpolar solvents.}
{liver}{}{Organ of the digestive system that produces bile, a substance that breaks up fat for absorption.}
{long bone}{}{A bone that is significantly longer than it is wide.}
{longitudinal fissure}{}{A fissure that separates the left and right hemispheres of the cerebrum.}
{loop of Henle}{}{Nephron loop that assists in concentrating urine.}
{lung}{}{Primary organ of respiration and gas exchange between the blood and air.}
{lysosome}{}{Membrane-bound vesicle containing hydrolytic enzymes that function as intracellular digestive enzymes.}
