Question

question 14 1 pts
lymph ducts empty into the circulatory system, draining into the:
o jugular vein.
o subclavian veins.
o superior vena cava.
o inferior vena cava.
question 15 1 pts
adaptive immunity, part of the bodys third line of defense, is orchestrated by two different classes of a type of white blood cell called the
o leukocyte.
o macrophage.
o lymphocyte.
o phagocyte.

Explanation:

• Question 14: Lymph ducts drain into the subclavian veins. The thoracic duct (the largest lymph duct) and the right lymphatic duct empty into the junction of the subclavian and internal jugular veins.
• Question 15: Adaptive immunity is orchestrated by lymphocytes. There are two main types of lymphocytes - B - lymphocytes and T - lymphocytes. Leukocytes is a general term for white blood cells. Macrophages are phagocytic cells involved in innate immunity. Phagocytes include cells like neutrophils and macrophages which are part of the innate immune response.

Answer:

• Question 14: subclavian veins.
• Question 15: lymphocyte.