4.A doctor notices that a patient is having difficulty absorbing nutrients. Which area in the diagram of the alimentary canal above is the likely

4.A doctor notices that a patient is having difficulty absorbing nutrients. Which area in the diagram of the alimentary canal above is the likely location of the problem? (USE LINK FOR IMAGE) https://lss.brainhoney.com/Resource/64964993,0/Assets/78905_5485ffd5/0608_g20_q01.jpg

 A the mucosa

B the mucosa

C the serosa

D the serosa

5.How does smoking and arterial plaques increase the risk of hypertension?

 Both increase blood volume.

Both decrease blood volume.

Both expand the diameter of the blood vessels.

Both constrict the diameter of the blood vessels.