Category: P

Recess of the roof of the third ventricle extending into the stalk of the pineal body.  

A recess in the lateral wall of the nasopharynx lying above and behind the opening to the auditory tube.  

A muscle or tendon spindle. These are the receptors for muscle stretching or kinesthetic stimuli.  

The assessment of the characteristics of the radial pulse as an aid in the diagnosis of disease, a technique used in traditional Chinese medicine, Ayurvedic medicine, among other healing traditions.    

A fibrous form of regenerated cellulose manufactured by the viscose process, desulfured, washed, and bleached. Once used in surgical dressings and bandages.  

In radiographic imaging, the x-ray beam that originates at the source of radiation. It is usually used to differentiate those rays from the additional scatter radiation that constitutes the majority of the beam used to create images.  

A ray composed of positively charged ions that in a discharge tube moves from the anode toward the cathode.  

A ray between 2540 and 3100 A.U. that is most effective in stimulating pigment production in the skin. This is due to a local response to irritation of cutaneous prickle cells.  

A tendinous line of fusion between the buccinator and superior pharyngeal constrictor muscles that passes between the pterygoid process and the mandible, serving as an important landmark in dental anesthesia.  

A line or ridge in the midline of the perineum.