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RETINA -
It is inverted. Innermost, sensitive layer. The part of ratina which is attached to choroid is pars optica. The part of retina attached to cilliary body is ora-serreta. In retina 2 parts are clear - (A) Pigmented layer (B) Neuro-sensory layer. Pigmented layer is of hexagonal or rectangular cells. Fusein pigment present adopted to absorb light rays. From these cells microvilli are given out to engulf extra pigment granules. Inside it, a layer of rods and cones is present. Rods are 1150 lakh and cones are 65 lakh. Rods are mone long, meant to judge abject in dim light in it rodopsin (retinine + opsine or skotoprine) present for it vitamin A (ratinol) is necessary i.e. in defficiency of vit A. night blindness (nyctalopia) is caused. Rhodopsin is known as visual purple.
Effects of long term malnutrition The effects of long term malnutrition are more severe in children. Children do not have sufficient amounts of carbohydrates and fats in
What is the difference between embryo and endosperm?
Delimitation and Limitation: There may be many aspects of the problem that need to be explored, but it is difficult to cover all aspects in a single research study bec
The part of human brain which is a significant relay station for the sensory impulses and also is the origin of many of the involuntary acts of eye such as narrowing of the pupil i
What are peristaltic movements? What is their role in human digestion? Peristalsis is the process of synchronized contractions of the muscular wall of the digestive tube. Peris
Development of Ovule The ovule develops from a specialised region of the ovary - the placenta. Initially it appears as a small mound on the placenta, and is composed of homoge
Q. Explain about S-Shaped incision for a mini pedicle flap? The S - shaped incision is indicated where a papilla needs to be developed and was first described by Palacci. This
What do all organic compounds contain? The key element is carbon. Organic compounds are all carbon-having compounds. By definition, an organic compound having carbon. Alt
describe how ulcers can lead to distention and irritation followed by vomiting?
Coiling of garden pea tendrils around any support is an example of: 1. Thigmotaxis 2. Thigmonasty 3. Thigmotropism 4. Thermotaxis Thigmotropism
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