MICROANATOMY

Detailed explanation-1: -Why do we use stains to identify the location of cellular structures? Makes structures easier to see under microscope (better contrast). Which stain will you use to identify the location of cell nuclei? Some stains bind to specific molecules within cells and emit light when viewed using a fluorescence microscope.

Detailed explanation-2: -How are fluorescence microscopes used?-Detect specific proteins or other molecules in cells and tissues.-Fluorescent molecules often used coupled to antibodies.-Excited by a particular wavelength of light.

Detailed explanation-3: -What are the macroscopic structures, which point into the white-colored lumen, called?-the villi extended into the lumen of the small intestine like the waving tentacles of an anemone.-The villi enlarge the surface area of the small intestine by approx 50x.