{deep}{}{Refers to a structure that is closer to the center of the body than another.}
{deoxyribonucleic acid [DNA]}{}{Type of nucleic acid containing deoxyribose as the sugar component, found principally in the nuclei of cells; constitutes the genetic material of cells.}
{depolarization}{}{Change in the electric charge difference across the cell membrane that causes the difference to be smaller or closer to 0 mV; phase of the action potential in which the membrane potential moves toward zero, or becomes positive.}
{depression}{}{Movement of a structure in an inferior direction.}
{dermis}{}{Dense, irregular connective tissue that forms the deep layer of the skin.}
{descending tract}{}{Group of nerve fibers that carries nerve impulses from brain through spinal cord.}
{determinate}{}{Cleavage into embryonic cells that cannot form an entire individual.}
{diaphysis}{}{Shaft of a long bone.}
{diencephalon}{}{Second portion of the embryonic brain; in the inferior core of the adult cerebrum.}
{diffusion}{}{Tendency for solute molecules to move from an area of high concentration to an area of low concentration in solution; the product of the constant random motion of all atoms, molecules, or ions in a solution.}
{digestion}{}{Breaking down of large nutrient molecules into smaller molecules that can be absorbed; hydrolysis.}
{digestive system}{}{The system in the body responsible for breaking down large nutrient particles and molecules into smaller molecules that can be absorbed.}
{diploid}{}{Normal number of chromosomes [in humans, 46 chromosomes] in somatic cells.}
{disaccharide}{}{Condensation product of two monosaccharides by elimination of water.}
{dissociation}{}{Ionization in which ions are dissolved in water and the cations and anions are surrounded by water molecules.}
{distal}{}{Farther from the midline or origin; opposite of proximal.}
{distal convoluted tubule}{}{Renal tubule that receives filtrate from the nephron loop and carries it to the collecting tube.}
{divergent pathway}{}{Pathway in which a neuron sends impulses to multiple other neurons.}
{dorsal}{}{Referring to the back of the body, synonymous with posterior.}
{dorsal root [spinal] ganglion [ganglia]}{}{Collection of sensory neuron cell bodies within the dorsal root of a spinal nerve.}
{dorsal root}{}{Sensory [afferent] root of a spinal nerve.}
{dorsiflexion}{}{Flexing the foot at the ankle toward the shin.}
{duodenum}{}{The first or anterior-most portion of the small intestine.}
{dura mater}{}{Tough, fibrous membrane forming the outer covering of the brain and spinal cord.}
{dynamic equilibrium}{}{Maintenance of balance when head and body are suddenly moved or rotated.}
