WebPatellar reflex. Schematic representation of patellar tendon reflex (knee jerk) pathway. The patellar reflex, also called the knee reflex or knee-jerk, is a stretch reflex which tests the L2, L3, and L4 segments of the spinal cord. Many animals, most significantly humans, have been seen to have the patellar reflex, including dogs, cats, horses ... WebPupillary light reflex (PLR) regulates the amount of light entering the eyes by reducing pupil diameter as the light intensity increases. The typical PLR includes different temporal components (Fig. 3 C): when a lighting stimulus is turned on, the pupil rapidly constricts, reaching a minimum size (a transient response). This transient ...
Neurological pupil index - Wikipedia
WebJan 30, 2024 · In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition. Although we call them physical "reactions," no reaction is actually occurring. WebThe physiology behind a "normal" pupillary constriction is a balance between the sympathetic and parasympathetic nervous systems. Parasympathetic innervation leads to pupillary constriction. A circular … strength and stretch 2
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WebThe patient with a bad headache and brisk relexes in his right arm and right leg might make one suspicious of a left sided brain tumour, whilst severe fatigue coupled with absent or delayed ... Webbrisk: [verb] to make animated, energetic, or marked by much activity : to make brisk. WebJan 17, 2024 · Pupil: Physiology and Abnormalities. The pupil is the space within the eye that permits light to project onto the retina. Anatomically located in front of the lens, the pupil's size is controlled by the surrounding iris. The pupil provides insight into the function of the central and autonomic nervous systems. strength and weakness analysis test