Asnwer the Questions According to the Figure Below

question 50

Multiple Choice

Asnwer the Questions according to the figure below:
-The mastoid air cells are labeled:

• A)3
• B)11
• C)12
• D)15

---

Definitions:

Lymph Nodes

Lymph nodes are small, bean-shaped structures that are part of the lymphatic system; they filter substances that travel through the lymph fluid, and contain immune cells that help the body to fight infection and disease.

Capsule

A structure, often a part of anatomy or bacterial cells, that encases or envelops an organ, joint, or bacterial cell, providing protection or structural integrity.

Thymosin

A hormone secreted by the thymus gland, playing a role in the maturation of T lymphocytes, an essential part of the immune system.

T-cells

A type of white blood cell that plays a central role in cell-mediated immunity, recognizing and destroying infected cells in the body.