Category: S

A membrane which allows some substances in liquid solution to pass through but not others. A membrane that allows the passage of some molecules but not others. Cell membranes are semipermeable. Semipermeable membranes are used clinically in ‘hemodialysis for patients with kidney failure. A membrane that allows passage of water but not substances in solution.…

Allowing some types of particle to pass through but not others. Characteristic of cell membranes that permit the passage of some materials but not others; also called selectively permeable.  

A malignant tumour in the testis. Malignant tumor of the testis, usually occurring in older men. Treatment is by surgery (orchidectomy). Membrane (e.g., a cell membrane) that allows the passage of some molecules but not others. A malignant tumor of the testis, appearing as a swelling, often painless, in the scrotum. It tends to occur…

Half liquid and half solid.  

Half conscious, only partly aware of what is going on.  

Almost unconscious or half asleep, but capable of being woken up. A state near loss of consciousness from which the patient can be aroused.  

A duct in the semicircular canals in the ear. One of three membranous tubes forming a part of the vestibular labyrinth of the inner ear. They lie within the semicircular canals and bear corresponding names: anterior, posterior, and lateral. The semicircular ducts originate from the utricle as a single common tube (crus communale). The three…

Shaped like half a circle. Canals three tubes that form part of the membranous labyrinth of the ear. They are concerned with balance and each canal registers movement in a different plane. At the base of each canal is a small swelling, which contains a crista. When the head moves the fluid in the canals…

A catheter which remains in place until it is deliberately removed. A bladder catheter designed to remain in place (e.g., a Foley catheter).  

The opinion which a person has about how worthwhile, attractive, or intelligent he or she is. An individual’s perception of their own personality and capabilities. Certain neurotic conditions arise from a mismatch between self-perception and how others perceive the individual. Psychotherapy seeks to address neurosis by altering a person’s self-perception.