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 C
Explanation
The right lymphatic duct drains lymph from the right side of the head, neck, right arm, and right side of the chest, including the right breast (right mammary vessels).
A. Right Tibial vessels drain lymph from the lower legs, which eventually drains into the thoracic duct, not the right lymphatic duct.
B. Right iliac vessels drain lymph from the pelvic region and also empty into the thoracic duct, not the right lymphatic duct.
D. Right femoral vessels drain lymph from the lower limbs, and their lymph also eventually drains into the thoracic duct.
Correct Answer is B
Explanation
A. The spleen does not shrink after puberty. It remains an active part of the immune and blood filtration systems throughout life.
B. The thymus (note: it appears misspelled as "Thygus" in the question) is the correct answer. It plays a crucial role in the development of T lymphocytes (T cells) during childhood but begins to shrink and become replaced by fatty tissue after puberty—a process known as involution.
C. The liver does not shrink after puberty. In fact, it continues to grow and function in metabolism, detoxification, and digestion throughout a person’s life.
D. The cisterna chyli is a dilated sac at the lower end of the thoracic duct involved in lymphatic drainage. It does not shrink after puberty and remains functional throughout life.
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