lesson 9

Question 1

what are the theee main types of heterotopic bones?

Answer 1

myositis ossificans, traumatic myositis, neurogenic heterotopic ossification

Question 2

what is the process of depositing calcium salts?

Answer 2

Calcification

Question 3

what are the two main forms of ossification?

Answer 3

endochondral, intramembranous

Question 4

when does epiphysis cartilage disappea?

Answer 4

after puberty when the long bone stops growing

then becomes visible in x-rays as the epiphyseal line

Question 5

what happens as long bones mature

Answer 5

osteoclasts enlarge the medullary cavity

osteons form around blood vessels in compact bone

Question 6

what bones does intramembranous ossification produce?

Answer 6

dermal bones such as mandible and clavicle

flat bones of the skull

Question 7

what is a single pair of large blood vessels entering the diaphysis?

Answer 7

nutrient artery and vein

Question 8

what supplies the epiphyseal cartilage where bone growth occurs?

Answer 8

metaphyseal vessels

Question 9

what supplies blood to superficial osteons/ second ossification center?

Answer 9

periosteal vessels

Question 10

what contains networks of lymphatic vessels and sensory nerves?

Answer 10

periosteum

Question 11

what allows bones to adapt to stress from working out?

Answer 11

mineral recycling

Question 12

so heavily stressed bones become thicker or thinner?

Answer 12

thicker and stronger

Question 13

how much bone mass can be lost with just a few weeks of inactivity?

Answer 13

1/3

Question 14

what is required for collagen synthesis and stimulation of osteoblast differentiation?

Answer 14

vitamin C

Question 15

what stimulates osteoblast activity and is important in child bone growth?

Answer 15

vitamin a

Question 16

what helps synthesize bone proteins!

Answer 16

vitamin k and B12