Which of the following blood cells are responsible for blood clotting?
Neutrophils
Erythrocytes
Platelets
B-cells
The Correct Answer is C
A. Neutrophils: White blood cells that engulf and destroy bacteria, not responsible for clotting.
B. Erythrocytes: Red blood cells that carry oxygen, not involved in clotting.
C. Platelets: Small cell fragments essential for hemostasis; they adhere, aggregate, and help form clots when blood vessels are injured.
D. B-cells: Lymphocytes responsible for antibody production, not clotting.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Vitamin D: Important for calcium/phosphate balance and has immune roles, but it is not the key vitamin for collagen synthesis.
B. Vitamin K: Required for activation of clotting factors and some bone proteins, not directly for collagen production.
C. Vitamin C: Essential as a cofactor for proline and lysine hydroxylation during collagen synthesis and supports immune function; deficiency impairs collagen formation.
D. Vitamin A: Important for vision, epithelial health, and immune function, but not directly required for collagen hydroxylation.
Correct Answer is A
Explanation
A. Gallbladder: Stores and concentrates bile produced by the liver, releasing it into the biliary tract during digestion to help emulsify fats.
B. Small intestine: Receives bile for fat digestion but does not store it; bile is delivered here from the gallbladder/liver.
C. Liver: Produces bile continuously, but the liver does not serve as the storage reservoir.
D. Pancreas: Produces digestive enzymes and bicarbonate, not bile, and does not store it.
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