Anatomy. the joint of the leg that allows for movement between the femur and tibia and is protected by the patella; the central area of the leg between the thigh and the lower leg. 2. Zoology. the corresponding joint or region in the hind leg of a quadruped; stifle. 3. a joint or region likened to this but not anatomically homologous with it, as the tarsal joint of a bird, the carpal joint in the forelimb of the horse or cow, etc.
The special sense which interprets the position of the head permitting the CNS to maintain stability and posture when the head and body are not moving; it is detected by mechanoreceptors in the vestibule of the inner ear, the utricle and saccule, which each contain a macula with the receptors for static equilibrium; when the head moves with reference to gravity, the otolithic membrane shifts and the mechanoreceptors (hair cells) in the macula detect this movement and send the information ...
Balance and hearing disorders, head trauma, migraines, and cold viruses or ear infection are all common causes of vertigo. Other causes may include medications or blood pressure problems. What all these conditions have in common is that they affect the inner ear, which helps keep us balanced. When there is a dysfunction of the inner ear, this can affect the sense of balance, leading to symptoms of vertigo, dizziness, nausea, vomiting, and loss of balance.