In humans, most gas exchange occurs between the

alveoli and capillaries

Explanation:gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

It is imperative to include immunologists and dermatologists to the care team.

Explanation:

Methotrexate is an antimetabolite drug that is used to treat different diseases including, arthritis rheumatoid and psoriasis, this medicament is known to reduce cell growth and to decrease the immune system responses. Moreover, etanercept (Enbrel) is a tumor necrosis factor-inhibitor drug that also is used to treat rheumatoid arthritis and psoriasis. In addition, this drug has also been associated with the functioning of the immune system by altering inflammation responses in the body.

In consequence, it is necessary to include in the health care team both immunologists, in order to study the effect of these drugs on the immune system (like inflammatory responses, for example), and dermatologists in order to examine their effects on skin associated-conditions (like arthritis-like psoriasis).