Category: D

Thickening and hardening of the skin.  

The triangular region of the neck. Its borders are the mandible, stylohyoid muscle, and the anterior belly of the digastric muscle.  

The passage of impulses through a nerve trunk in both directions by sensory and motor neurons.  

The spread of infectious germs in airborne fluids, e.g., the liquid particles released during coughing or sneezing.  

The transfer of blood directly from one person to another.  

Use of both tension across an injury and movement to maintain proper alignment and function of an injured body part.  

A spinal cord tract superficial to the tip of the dorsal horn. It is made up of short pain and temperature fibers that are processes of neurons having their cell bodies in the dorsal root ganglion.  

Diphtheria toxin that has been altered so that it cannot cause disease but is still able to stimulate the production of antibodies for active immunization; it is used in diphtheria-pertussis-tetanus vaccine (DTaP).  

The exotoxin of various species of Shigella.  

The specific toxin produced by Corynebacterium diphtheriae.