Category: C

Closure of eyelids when the conjunctiva is touched or threatened. The quick shutting of the eyelids in response to touching the eyeball. The involuntary closure of the eye when its white part is touched.  

A slowing of the heart rate along with a fall in blood pressure when the carotid sinus is massaged. Carotid sinus massage may be used therapeutically as a treatment for paroxysmal supraventricular tachycardia. Applying pressure to the carotid sinus can potentially suppress or halt the heart’s activity. This mechanism underlies garroting, which is distinct from…

The treatment of bone fractures by placing the bones in their proper position without surgery.  

A small concavity, lying between the two limbs of the vestibular crest in the vestibule of the ear, that lodges the beginning of the cochlear duct.  

A receptor that produces a sensation such as touch, temperature, or pain that can be localized in or on the surface of the body.  

A receptor on neutrophils, macrophages, lymphocytes, and other cells that allows complement factors to bind, thus stimulating inflammation, phagocytosis, and cell destruction.  

Any of several protein receptors for chemokines that spans the cell membrane and links to intracellular G proteins. The cell-to-cell signaling and regulating effects of chemokines (e.g., on inflammation or hematopoiesis) are mediated through chemokine receptors, which can be blocked with specific antagonist drugs. CCR5 and CXCR4 are chemokine receptors that are also receptors for…

Cell membrane proteins or intracellular proteins that react with chemicals (e.g., hormones) circulating in the cell’s environment. The reaction triggers the cell’s characteristic response to the hormone or other chemical.  

The ability of an antibody to bind with more than one antigen or of an antigen to bind with more than one antibody.  

A secondary photon produced by an electron giving up energy as it changes location from an outer to an inner shell in an atom. The wavelengths are characteristic of the difference in binding energies.