Lymph Node Structure and Function

The video provides an in-depth look at the anatomy and function of lymph nodes, explaining their role in the immune system. It covers the structure of lymph nodes, including the cortex, medulla, and paracortex, and discusses the clinical significance of lymph nodes in cancer and infection. The video also explains the difference between stroma and parenchyma, and how lymph nodes are involved in lymphatic drainage and cancer metastasis. The importance of understanding lymph node structure for diagnosing diseases is emphasized, along with a call to action for further learning.

What is the primary function of lymph nodes in the lymphatic system?

• To produce red blood cells

• To filter lymph and house immune cells

• To store fat

• To regulate body temperature

Which part of the lymph node contains lymph follicles?

• Cortex

• Sinuses

• Medulla

• Hilum

How do lymph nodes react to cancerous cells?

• They produce antibodies

• They enlarge and become non-tender

• They shrink and become tender

• They release toxins

What is the difference between stroma and parenchyma in lymph nodes?

• Both are structural

• Stroma is structural, parenchyma is functional

• Both are functional

• Stroma is functional, parenchyma is structural

What is the role of the fibrous capsule in lymph nodes?

• To produce lymphocytes

• To divide the lymph node into sections

• To filter blood

• To store nutrients

Where are B lymphocytes primarily located in the lymph node?

• Medulla

• Cortex

• Para cortex

• Hilum

What is the significance of the germinal center in lymphoid follicles?

• It stores red blood cells

• It produces hormones

• It is where lymphocytes mature

• It is where lymph is filtered

Which lymphatic structure drains the upper right quadrant of the body?

• Left lymphatic duct

• Superior vena cava

• Right lymphatic duct

• Thoracic duct

What type of biopsy is recommended for lymph node examination?

• Fine needle aspiration

• Ultrasound

• Excisional biopsy

• Blood test

Which cells are found in the medullary sinuses of lymph nodes?

• T lymphocytes

• Red blood cells

• B lymphocytes

• Macrophages