Category: B

Loxosceles reclusa, 3/8-in (10 mm) long spider native to North America. The venom of the brown recluse spider is toxic and can be lethal. It may produce a large area of necrosis at the site of the bite.  

The female of Latrodectus mactans. It is native to the southern U.S. but has been reported throughout the country. It prefers to live in woodpiles and other locations where it is well hidden. It is glossy black with a brilliant red spot, usually shaped like an hourglass or two triangles, on the undersurface of the…

The smooth muscle surrounding the opening of the bladder into the urethra.  

A speculum with two opposed blades that can be separated or closed.  

A mixture of bronchial and vesicular sounds.  

Sounds not heard in the normal lung but occurring in pulmonary disease, indicating infiltration and solidification of the lung. The rough noise generated by air moving through the bronchial tubes.  

An organic murmur as of air from an aperture expelled with moderate force.  

A growth hormone made by recombinant methods. Its use in dairy cattle to increase milk production is controversial.  

A solution of a weak acid and its salt (e.g., carbonic acid, sodium bicarbonate) of importance in maintaining a constant pH, especially of the blood. A solution created by combining a weak acid or a weak base with a salt of the weak base. This solution can withstand significant shifts in its pH (acid-alkali balance)…

A synonym for isotonic solution.