Medical dictionary. 2011.
Reflex — For other uses, see Reflex (disambiguation). A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus.[1] A true reflex is a behavior which is mediated via the reflex arc; this does… … Wikipedia
Hearing test — A hearing test is an evaluation of the sensitivity of a person s sense of hearing, most often performed by an audiologist using an audiometer. Audiologists are the only health professionals with extensive training on the anatomy and physiology of … Wikipedia
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
Vestibulo-ocular reflex — The vestibulo ocular reflex. A rotation of the head is detected, which triggers an inhibitory signal to the extraocular muscles on one side and an excitatory signal to the muscles on the other side. The result is a compensatory movement of the… … Wikipedia
Cushing reflex — (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing s Law) is a physiological nervous system response to increased intracranial pressure (ICP) that… … Wikipedia
Jaw jerk reflex — The jaw jerk reflex or the masseter reflex is a stretch reflex used to test the status of a patient s trigeminal nerve (CN V).[1] The mandible or lower jaw is tapped at a downward angle just below the lips at the chin while the mouth is held… … Wikipedia
Mammalian diving reflex — The mammalian diving reflex is a reflex in mammals which optimizes respiration to allow staying underwater for extended periods of time. It is exhibited strongly in aquatic mammals (seals,[1] otters, dolphins, etc.), but exists in a weaker… … Wikipedia
Withdrawal reflex — The withdrawal reflex (nociceptive or flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli.[1] It is polysynaptic, causing stimulation of sensory, association, and motor neurons.[1] Contents 1 Example … Wikipedia
Crossed extensor reflex — The crossed extensor reflex is a withdrawal reflex. When the reflex occurs the flexors in the withdrawing limb contract and the extensors relax, while in the other limb, the opposite occurs. [1] An example of this is when a person steps on a nail … Wikipedia
Moro reflex — The Moro reflex in a four day old infant: 1) the reflex is initiated by pulling the infant up from the floor and then releasing him; 2) he spreads his arms; 3) he pulls his arms in; 4) he cries (10 seconds) The Moro reflex, which is distinct from … Wikipedia
