Question 1

Which of the following structures is responsible for filtering lymph and housing immune cells that respond to pathogens?

Accepted Answer

Lymph node

Question 2

A patient presents with swelling in the right inguinal region after a leg infection. Which lymph nodes are most likely involved?

Accepted Answer

Inguinal lymph nodes

Question 3

What is the primary function of the cisterna chyli in the lymphatic system?

Accepted Answer

Collecting lymph from the lower body and delivering it to the thoracic duct

Question 4

Which structure is NOT part of the lymphatic system?

Accepted Answer

Cricoid cartilage

Question 5

Lymph flows in which direction within lymphatic vessels?

Accepted Answer

From the tissues toward the heart

Question 6

Which tonsil is located at the posterior wall of the nasopharynx and is commonly called the 'adenoid'?

Accepted Answer

Pharyngeal tonsil

Question 7

A blockage in the thoracic duct would most directly affect lymph drainage from which region?

Accepted Answer

Left leg

Question 8

Which of the following structures is responsible for the production and maturation of T lymphocytes?

Accepted Answer

Thymus

Question 9

If the palatine tonsils are removed due to chronic infection, which immune function is most directly affected?

Accepted Answer

Immune surveillance of inhaled and ingested pathogens

Question 10

Which lymphatic structure is most likely to be enlarged in a patient with a sore throat?

Accepted Answer

Cervical lymph nodes

Question 11

Which of the following best describes the function of the thoracic duct?

Accepted Answer

Drains lymph from the left side of the body and both lower limbs into the venous system

Question 12

A patient has a tumor compressing the right lymphatic duct. Which area is most likely to experience lymphatic drainage problems?

Accepted Answer

Right arm

Question 13

Which of the following structures is NOT typically found in the head and neck region?

Accepted Answer

Inguinal lymph nodes

Question 14

Which equation best represents the relationship between lymph flow ($$Q$$), pressure difference ($$\Delta P$$), and resistance ($$R) in a $$lymphatic vessel?

Accepted Answer

$$Q = \Delta P / R$$

Question 15

Which structure is most likely to be involved in the absorption of dietary fats from the intestine?

Accepted Answer

Cisterna chyli

Question 16

During a physical exam, a physician palpates the axillary region for lymph nodes. What is the clinical significance of enlarged axillary lymph nodes?

Accepted Answer

Possible infection or malignancy in the upper limb or breast

Question 17

Which of the following is a correct pathway for lymph drainage from the lower limb?

Accepted Answer

Inguinal lymph nodes → Cisterna chyli → Thoracic duct → Left subclavian vein

Question 18

Which structure is most likely to be affected in a patient with lymphedema of the left arm?

Accepted Answer

Thoracic duct

Question 19

Which lymphatic organ is located in the upper left quadrant of the abdomen and is involved in filtering blood and recycling old red blood cells?

Accepted Answer

Spleen

Question 20

A patient with a compromised immune system is found to have an underdeveloped thymus. Which cell type is most likely to be deficient?

Accepted Answer

T lymphocytes

Lymphatic and Respiratory System Structures: Identification and Function

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