The phagocyte termed dust cell is found in the:
Blood
Lung
Liver
Small intestine
The Correct Answer is B
A. Blood contains various types of cells, such as red blood cells and white blood cells, but dust cells are not found in the blood.
B. Dust cells are a type of macrophage found in the lungs. They are responsible for engulfing and clearing inhaled particles, dust, and pathogens from the respiratory system.
C. The liver contains Kupffer cells, which are macrophages that filter blood, but dust cells are not found in the liver.
D. The small intestine contains various immune cells, but dust cells are not among them. The small intestine has its own specialized immune cells like Peyer's patches.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Tracheobronchial nodes are located near the trachea and bronchi in the chest and drain lymph from the lungs and airways, not from the arm or breast.
B. Axillary nodes are located in the armpit (axilla) and drain lymph from the arm, breast, and upper chest. They are a key part of the lymphatic system for these regions.
C. Inguinal nodes are located in the groin and drain lymph from the lower limbs, external genitalia, and lower abdomen.
D. Cervical nodes are located in the neck and drain lymph from the head and neck region, not from the arm or breast.
Correct Answer is A
Explanation
A. Red blood cells are not typically found in lymph. Lymph is a clear fluid that circulates through the lymphatic system and normally does not contain red blood cells unless there is damage or leakage from blood vessels.
B. Proteins can be present in lymph, especially smaller ones that pass through capillary walls.
C. Water is a major component of lymph, making up the fluid part that helps transport cells and substances.
D. Lymphocytes are a key component of lymph, playing a central role in the immune response.
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