gland whose secretions reach their target organ by means of a duct

the movement of a substance, in bulk, out of a cell by fusion of vesicles containing the substance with the plasma membrane

regulation of body temperature by the external environment rather than by internal metabolism

the process by which gas is expelled from the lungs - breathing out

tidal volume + expiratory reserve volume

the extra volume of air forced out of the lungs, above that of normal tidal volume after a forced expiration

the exchange of gases between the atmospheric air and the blood. Also called breathing.

sensory cells that receive information from the environment outside the body

fluid found outside the cells