Important points
Posted by admin
on November 25, 2010
- Superior pancreatico duodental Artery- branch of gastro duodenal
- Inferior pancreatico duodenal- br of superior mesenteric
- Superior and inferior tarsal muscles and mullers/orbital muscle have sympathetic supply, so theya re affected in Horners.
- Mastoid antrum,auditory ossicles and structures of internal ear are fully developed at birth.
- Progesterone causes impaired glucose tolerance.
- Estrogen improves response to insulin.
- Saliva contains large quantity of K+ and Bicarbonate, but K+ content is maximum in secretions from rectum.
- Maxillary antrum and orbit reaches adult size by 15 -16 years.
- Capacitation of sperms occur in uterus and fallopian tubes
- Acrosome reaction occurs after binding to zona pellucida induced by zona proteins.
- Muscle spindle detects muscle length and its rate of change
- Golgi tendon organ detects muscle tension and its rate of change
- Inverse stretch reflex/lengthening reaction mediated by Golgi tendon organ.
- Foveola is the centre of fovea in the retina, in the foveola there is one to one relationship between cones , bipolar cells and retinal ganglion cells.
- Rods have an absorption peak near 500nm.
- Difference between photoreceptors and other receptors is that photoreceptors get hyperpolarized instead of being depolarized.
- Photoreceptor cells are in depolarized state in the dark due to open Na+ channels, during hyperpolarization these channels close.
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