RRB JE practice question
The adult human skeleton of 206 bones has 80 bones in the axial skeleton. How many bones form the appendicular skeleton?
From a RRB JE Science practice set · Science
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Correct answer: (D) 126
Appendicular skeleton = 206 − 80 = 126 bones. It includes the limbs with the pectoral (shoulder) and pelvic girdles, while the axial skeleton includes the skull, vertebral column, ribs, sternum, hyoid and ear ossicles.
हिंदी में प्रश्न
206 अस्थियों वाले वयस्क मानव कंकाल में अक्षीय कंकाल की 80 अस्थियाँ हैं। उपांगीय कंकाल में कितनी अस्थियाँ होती हैं?
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सही उत्तर: (D) 126
उपांगीय कंकाल = 206 − 80 = 126 अस्थियाँ। इसमें हाथ-पैर तथा अंस और श्रोणि मेखलाएँ आती हैं, जबकि अक्षीय कंकाल में खोपड़ी, मेरुदंड, पसलियाँ, उरोस्थि आदि आते हैं।
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