The organ that produces the hormone erythropoietin is the:
A. Spleen
B. Kidney
C. Bone marrow
D. Liver
Answer: Option B
Solution (By JKSSB Mock Tests)
The kidneys sense low oxygen levels and secrete erythropoietin (EPO), which stimulates red blood cell production in the bone marrow. The liver also produces some EPO in fetal life. Bone marrow is the target, not producer.
Explanation:
The adult human dental formula is 2123/2123 (incisors 2, canines 1, premolars 2, molars 3) per quadrant, totaling 32 permanent teeth. Deciduous teeth formula is 2102/2102 (20 teeth). The formula represents half of the upper jaw over half of the lower jaw. Wisdom teeth (third molars) may be absent in some individuals.
Explanation:
Neutrophils are the most abundant white blood cells and are part of the innate immune system. They quickly migrate to infection sites, where they phagocytose bacteria and release antimicrobial substances. Lymphocytes are for adaptive immunity, eosinophils combat parasites, basophils release histamine.
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