a semipermeable membrane that keeps circulating blood separate from cerebrospinal fluid and the brain

fluid surrounding the blood cells and transported by the blood-vascular system

a ball of chewed food bound together with saliva that is formed in the mouth by the action of the tongue

having a short, broad skull, e.g. boxers, bulldogs, pugs, Persian cats, lionhead rabbits. These animals tend to have overlong soft palates, excessive soft tissue in their oral cavity and pharynx, smaller tracheal diameters than expected, and narrow nares.

a slower than normal heart rate

a slower than normal respiratory rate

see external respiration

a substance which is able to resist change in the pH of a solution so that the pH remains constant