Vertebral Column - Embryology

Question 1

vertebra develops in what?

Answer 1

Mesoderm

Question 2

What guides the development of the vertebral column and the spinal cord?

Answer 2

notochord

Question 3

Condensations of mesoderm around the notochord are called?

Answer 3

somites

Question 4

Somites develop what there “tomes”

Answer 4

sclerotomes
myotomes
dermatomes

Question 5

The vertebral bodies develop from which “tome”

Answer 5

sclerotome

Question 6

How many primary ossification centers for the vertebra? What are they?

Answer 6

3
Centrum (for body
R/L halves of neural arch

Question 7

How many secondary ossification centers for the vertebra? What are they?

Answer 7

5
Spinous process
R/L transverse processes
Upper and lower vertebral endplates

Question 8

Myotomes: somatic develops?

Answer 8

Skeletal muscles

Question 9

Myotomes: splanchnic develops?

Answer 9

Smooth muscles

Question 10

Myotomes: epimere develops?

Answer 10

Extension muscles

Question 11

Myotomes: hypomere develops?

Answer 11

Flexor muscles

Question 12

Dermatomes develops?

Answer 12

Peripheral nerves and dermis

Question 13

What is it called when mesoderm is replaced by cartilage?

Answer 13

chondrification

Question 14

Cartilage is replaced by bone?

Answer 14

ossification

Question 15

Bone is formed within a membrane is called?

Answer 15

intramembranous ossification

Question 16

Bone is formed within cartilage?

Answer 16

intracartilaginous ossification

Question 17

What bones are intramembranous ossification?

Answer 17

Flat bones of skull and clavicle

Question 18

What bones are intracartilaginous ossification?

Answer 18

Long bones, base of skull, vertebral column, and ribs