Name the body structure concerned with the given functional activity:

(b) Transports oxygen to the body cells.

Q. Name the body structure concerned with the given functional activity:
Transports oxygen to the body cells

Q. Name the body structure concerned with the given functional activity:

(d) Combines with the oxygen in the lungs.

Q. Name the body structure concerned with the given functional activity:

(c) Helps to increase the volume of the chest activity lengthwise.

Q. Name the body structure concerned with the given functional activity:

(e) Protects the lungs from mechanical injuries.

Q. Name the body structure concerned with the given functional activity:

(a) Prevents food from entering the trachea during swallowing.