Category: P

  • Pyknic types

    Having a rounded body, large chest, thick shoulders, broad head, thick neck, and usually short stature.  

  • Phage types

    Distinguishing subgroups of bacteria by the type of bacteriophage associated with that specific bacterium.  

  • Parasitic twins

    The smaller of a pair of conjoined twins, when there is a marked disparity in size.  

  • Papillary tumor

    Neoplasm composed of or resembling enlarged papillae.  

  • Papulonecrotic tuberculid

    A form of tuberculid characterized by symmetrically distributed bluish papules, especially on the extremities. These undergo central necrosis and, on healing, leave deep scars.  

  • Pubic tubercle

    A small projection at the lateral end of the crest of the pubic bone. The inguinal ligament attaches to it.  

  • Pulmonary trunk

    The great vessel that arises from the right ventricle of the heart and gives rise to the right and left pulmonary arteries to the lungs.  

  • Pubourethral triangle

    A triangular space in the perineum bounded laterally by the ischiocavernous muscle, medially by the bulbocavernous muscle, and posteriorly by the superficial transverse perineus muscle.  

  • Posterior cervical triangle

    The triangular region wrapping around the side of the neck bounded by the upper border of the clavicle, the posterior border of the sternocleidomastoid muscle, and the anterior border of the trapezius muscle.  

  • Parkinsonian tremor

    A resting tremor of the fingers and hands, often called a pill-rolling tremor, that is suppressed briefly during voluntary activity. The tremor disappears during all but the lightest phases of sleep.