Mindblown: a blog about philosophy.

Specialized tissue that carries the nerve impulse for contraction from its origin, in the sinoatrial node, through the atria, to the atrioventricular node. From here it passes through the bundle of His into the ventricles via Purkinje fibers of the left and right bundle branches. Small, terminal Purkinje fibers deliver the stimulus at a cellular…

Antigen present only in very small amounts in normal tissues. Used as a screening test for cancer and as a tool to monitor the success of therapy (e.g., surgery, radiotherapy, chemotherapy). An antigen measured in serum and sometimes other body fluids to detect the presence or recurrence of cancer in such sites as the colon,…

Nausea from acceleration, deceleration, and other motions experienced while riding in a car.  

Insertion of a cannula into a body cavity or duct (e.g., trachea); also called cannulization.  

Containing a lattice-work type of structure; often used to describe the microscopic architecture of bones such as the vertebrae, femur, and calcaneus (heel). Applied to the bony tissue laid down by osteoblasts during development of bone and in the consolidation stage of fracture repair. A term applied to loose bony tissues as found in the…

Formation of channels or passages through tissue.  

Diameter of a tube or vessel (e.g., a blood vessel). The diameter of any orifice, canal, or tube.  

Producing warmth or the sensation of warmth (e.g., a hot-water bottle or a commercial ointment for muscle soreness). To warm or to make hot, as in applying a hot compress. Conveying a sense of warmth when applied to a part of the body; something that conveys such a sense.  

A spurlike projection, as that of the femur neck (calcar femorale). The calcar avis is the projection in the medial wall of the lateral ventricle of the brain.  

Chemical (zinc oxide with added iron oxide) used in the form of a pink powder or lotion to treat Itching and mild skin irritations.