Spongy Bone Arrangement

Question 1

Spongy bone composition:

Answer 1

Made of sharp, needle like bones called trabeculae

Question 2

Trabeculae arrangement

Answer 2

Arranged in criss-cross fashion that forms open gaps between multiple trabeculae

Question 3

Gaps between trabeculae are:

Answer 3

Red bone marrow

Question 4

Membrane that lines inside of cavities

Answer 4

Endosteum

Question 5

Endosteum develops from?

Answer 5

Fetal blood vessel walls

Question 6

Trabeculae composition:

Answer 6

Made of rings of lamellae with osteocytes housed in lacunae

Question 7

Extend from lacunae

Answer 7

Canaliculi

Question 8

Differences between trabeculae and osteons

Answer 8

Trabeculae don’t have central canals

Lamellae are not perfect rings