Clinical Organ System Exam 2 Diagram Quiz

Explanation
Alveoli are small air sacs in the lungs where gas exchange between the air and blood takes place. They are responsible for the exchange of oxygen and carbon dioxide, allowing oxygen to enter the bloodstream and carbon dioxide to be removed. In the given question, #1 is pointing to the alveoli, indicating that it is the correct answer.

Explanation
The correct answer is "bronchioles" because the question is asking what #2 is pointing to, and based on the options provided, bronchioles is the only answer that fits. Capillaries, alveoli, and bronchus are not indicated by #2.

Explanation
The right lymphatic duct is the correct answer because it is one of the main lymphatic vessels in the body. It drains lymph from the right side of the head, neck, and upper limb, and empties into the right subclavian vein. The other options, such as the thymus, lymphatic vessels, thoracic duct, and spleen, are all parts of the lymphatic system but are not specifically the correct answer in this context.

Explanation
The question is asking for the correct answer to fill in the blank. The correct answer is "thoracic duct." The thoracic duct is a major lymphatic vessel in the body that collects lymph from the lower limbs, abdomen, left side of the thorax, left upper limb, and left side of the head and neck. It then drains this lymph into the left subclavian vein, where it enters the bloodstream. The other options listed (thymus, right lymphatic duct, lymphatic vessels, and spleen) are not the correct answer in this context.

Explanation
The correct answer is lymphatic vessels. The question is asking for the missing number in a sequence, but since there is no sequence given, it is not possible to determine the missing number. Therefore, the answer cannot be determined.