The diagram below shows two cells from the lining of the trachea.

a. Name:

i. Cells P and R

ii. Structures S, T, U and W.

b. Explain:

i. Why cell P contains many of the structures labelled T

ii. The role of structure U in cell R.

c. Calculate the actual length of cell P. Show your working.

d. Describe the roles of cell P and cell R in the gas exchange system.

Transcribed Image Text:

NN magnification = x750 cell P cell R