Question

Within each kidney, blood capillaries and structures called glomerular capsules are made of an epithelial tissue specifically suited for diffusion and filtration. Which epithelium would be best suited for this function?

Answer 1

Answer: The glomerulus is filled with blood via an afferent arteriole and it is ensheathed in visceral SQUAMOUS EPITHELIUM.

Explanation: Glomerular wall consists of fenestrated endothelium, thick basal lamina and podocytes' pedicels separated by filtration slits of controllable width. These permit the filtration of water solutes into a capsular space between glomerular epithelium and the parietal squamous epithelium of Bowman's capsule.

Answer 2

Answer:

Simple  Squamous epithelium

Explanation:

These are flat cells with single layer thick. They are extremely flat with large surface ares to volume ratio. Therefore they are found in lining of organs and tissues whose functions  involved rapid movement or transport of substances across the  walls.e,g Alveolar Sac, Lining of the Bowman's  capsule of the Nephron.

When viewed under microscope, they appear like flat scales,with nuclei which can be flat, oblong or elliptical in shape.

The blood in the Glomerular filtrate is separated from the Bowman's capsular space by the endothelial lining of the Glomerular capillaries,basement membrane, and the simple  squamous epithelial cells which forms the innermost lining of Bowman's capsule.

These  squamous epithelial cells have some finger- like projections called  Podocytes with gaps in between.  The gaps allow  the passage of relatively large molecules;  e.g plasma protein, but  these are restricted with other large molecules,  by the innermost epithelial lining while allowing  rapid diffusion and filtration of glucose, amino acid. urea ions and other materials through.