Webgray crescent A light gray, crescent-shaped region of cytoplasm that becomes exposed after cortical rotation, located near the equator of an egg on the side opposite sperm entry, marking the future dorsal side of the embryo. A) What type of cleavage pattern occurs in amphibians? B) What is the mechanism for this? WebMar 30, 2024 · The grey crescent is ‘melanin rich area formed at the region opposite to the entry of sperm’. Among animals which produce eggs, yolk is the nutrient-bearing portion of egg whose primary function is to provide food for the development of embryos. Thus the correct option is B.
Arcus senilis: A sign of high cholesterol? - Mayo Clinic
WebMay 20, 2024 · Arcus senilis is a gray or white arc visible above and below the outer part of the cornea — the clear, domelike covering over the front of the eye. Eventually, the arc may become a complete ring around the colored portion (iris) of your eye. Arcus senilis is common in older adults. It's caused by fat (lipid) deposits deep in the edge of the cornea. WebGrey crescent is the area just opposite to the site of entry of sperm into ovum. It marks the future dorsal side of the embryo. denise mahoney scrubs
Gray crescent in fertilized frog
WebNov 1, 2024 · Grey crescent is the area Class:12Subject: BIOLOGYChapter: HUMAN REPRODUCTIONBook:A2ZBoard:NEETYou can ask any doubt from class 6-12, JEE, … WebMay 20, 2024 · Arcus senilis is a gray or white arc visible above and below the outer part of the cornea — the clear, domelike covering over the front of the eye. Eventually, the arc … WebDec 4, 2024 · Perhaps you've noticed how some people have a gray, white, or bluish circle around all or part of the colored part of their eye (the iris). Sometimes referred to as "ring around the pupil," this condition is … denise mack branch county