question_answer

The diagram shows a model of a nephron and its associated blood vessels.

  This model has been criticized for being a poor representation of a nephron. Which of the following statements explain(s) this?

1. The rubber tubing at B is not split up into numerous branches like the capillary network of the glomerulus.

2. The rubber tubing at B should be continuous and not contain small pores.

3. The stem of the thistle funnel (E) is not coiled to represent the convoluted tubules of the nephron.

 

A) 1 only                          

B) 1 and 3 only     

C) 2 and 3 only     

D) 1, 2 and 3