Ossification of proximal end of ulna takes place at what age:: (A) 10 years, (B) 12 years, (C) 13 years, (D) 16 years
Answer is D. ANSWER: (D) 16 yearsREF: Parikh 6th edition page, Cunningham s textbook of anatomy page 213Ossification of ulna:Ulna is ossified by one primary and two or more secondary centers AppearanceFusionProximal ulna (secondary center)10 years16 yearsBody (primary center)2nd month of intrauterine lifeAt birthDistal ulna (secondary center)6 years20-23 yearsUnless specified the age is for male