C) the degrecd D) the presence of irregular bones E)None of the answers are corr
ID: 95739 • Letter: C
Question
C) the degrecd D) the presence of irregular bones E)None of the answers are correct. 19) Closure of the fontanels is typically complete around the age of A) six months B) one year C) two years D) 10 years E) puberty 20) Which event occurs first as an individual grows and ages? A) The frontal suture closes. B) The ossification centers of the occipital bone fuse. C) The styloid process fuses to the temporal bone. D) The adult dentition appears. E) The hyoid bone finishes ossifying and fusing. 21) In a "dancer's fracture," which of the following is broken? A) proximal portion of the 1st metatarsal B) distal portion of the 5th metatarsal C) talus D) distal portion of the 2nd metatarsal E) proximal portion of the 5th metatarsal 22) Which of the following sports injuries, common in women, results from repetitive forces on th running or jumping? A) miserable misalignment B) patellofemoral pain syndrome C) claw feet D) congenital talipes equinovarus E) stress fracture 23) Which of the following is true of the bony matrix of the skeleton as people age? A) Its composition remains constant throughout life. B) Its mineral content diminishes as a normal part of aging. C) It gains calcium carbonate while losing calcium phosphate. D) The proportion of collagen fibers in the matrix increases with age. E) Fusion of the trabeculac of spongy bone occurs. on the lateral surface stabilizes the joint. 24) At the distal end of the radius, the A) head B) trochlea Copyright © 2015 Pearson Education, Inc.Explanation / Answer
19) 2 years
Total fontanels closure takes place in 24 months ie 2 years posterior fontanels closure takes place after 2 to 3 months of birth followed by sphonodial fontanels which closes around sixth month then mastoid fontanel closes from 6 to 18 month later anterior fontanel closes around 18 to 24 months.
20) hyoid bone finishes ossifying and fusing
Ossification of hyoid bone occur immediately after birth.
21) proximal portion of 5th metatarsal is broken in dancers fractures
22) stress fracture
Studies have shown female athlete's seems to experience more stress fractures than male counterparts
23) mineral content of bone diminishes as aging process
Mineral are maintained by hormones in our body during aging less hormones are released causing demineralization of bone
24) trochlea stabilize the joint
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