Transcribed Image Text: QUESTION 3 A в Both of the images above show tube-like structures in the body cut in cross-section. Transcribed Image Text: QUESTION 4 Which of the two

Transcribed Image Text: QUESTION 3
A
в
Both of the images above show tube-like structures in the body cut in cross-section. Transcribed Image Text: QUESTION 4
Which of the two tubes (A or B) exchanges things as the fluid flows through the tube so that the fluid is different at the beginning and the end of the
tube?
O A. A
O B.B
QUESTION 5
Which of the two tubes (A or B) simply acts like a pipe that fluid flows through without any exchange along the tube?
O A. A
ОВ. В