cortical ring sign
- ring-shaped appearance of the cortex of the scaphoid bone on radiography of the wrist, caused by abnormal orientation of the scaphoid following disruption of the scaphoid ligament; a sign of scapholunate dislocation. Called also signet ring s.
Medical dictionary. 2011.
Look at other dictionaries:
signet ring sign — in diagnostic imaging, a ring shaped appearance caused by a pathologic process, such as that seen on radiographs of the wrist in scapholunate dislocation or that caused by a dilated bronchus on computed tomography of the lung. See also cortical… … Medical dictionary
Cortical blindness — Classification and external resources ICD 10 H47.6 ICD 9 377.75 … Wikipedia
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium
test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… … Medical dictionary
syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… … Medical dictionary
line — 1. A mark, strip, or streak. In anatomy, a long, narrow mark, strip, or streak distinguished from the adjacent tissues by color, texture, or elevation. SEE ALSO: linea. 2. A unit of … Medical dictionary
nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… … Universalium
speech — /speech/, n. 1. the faculty or power of speaking; oral communication; ability to express one s thoughts and emotions by speech sounds and gesture: Losing her speech made her feel isolated from humanity. 2. the act of speaking: He expresses… … Universalium
Cetacean intelligence — denotes the cognitive capabilities of the Cetacea order of mammals, which includes whales, porpoises, and dolphins. Contents 1 Brain size 2 Brain structure 3 Problem solving ability … Wikipedia
Finger — For other uses, see Finger (disambiguation). Fingers of the human left hand. A finger is a limb of the human body and a type of digit, an organ of manipulation and sensation found in the hands of humans and other primates … Wikipedia