Exam 2 Lecture 2

Question 1

Ossification

Answer 1

The process of creating new bone

Question 2

2 types of ossification

Answer 2

1. Intramembranous Ossification
2. Endochondral Ossification

Question 3

Intramembranous Ossification

Answer 3

-Occurs at mesenchymal membrane
-Throwing seeds in the ground and watching it grow

Question 4

Endochondral Ossification

Answer 4

-Grows at hyaline cartilage and is replaced by bone on diaphysis side
-Osteogenic cells

Question 5

Which bone is remodeled the most and the quickest? Why?

Answer 5

-Distal aspect of femur
-This gets the most wear and tear bc body weight is constantly putting being put on it

Question 6

Appositional Growth versus Interstitial Lengthening

Answer 6

Appositional Growth: Grows in gurth
Interstitial Lengthening: Grows in length

Question 7

Which of the 5 zones is close to the epiphyseal plate?

Answer 7

Zone 1

Question 8

Which of the 5 zones is closest to the Diaphyseal side

Answer 8

Zone 5

Question 9

Stress fracture

Answer 9

-Healthy bone, but too much stress

Question 10

Pathological Fracture

Answer 10

Unhealthy bone, regular stress

Question 11

Closed Fracture

Answer 11

Skin is not broken through by bone

Question 12

Open

Answer 12

Skin is broken, bone goes through the skin

Question 13

Complete

Answer 13

Bone is broken into 2 or more pieces “shattered”

Question 14

Incomplete

Answer 14

Bone is only partially broken and pieces remain in correct place

Question 15

Osteoporosis

Answer 15

-Bone disease where bone density declines where bones are extremely brittle leading to more fractures
-estrogen important to maintain bone density

Question 16

Axial Skeleton

Answer 16

-Thoracic cage (ribs, sternum)
-Vertebral column
-Skull

Question 17

Appendicular Skeleton

Answer 17

-Arms
-Pectoral girdle
-Legs
-Pelvic girdle