Compact Bone

Front 1

Osteons in compact bone are situated how? What is their function?

Back 1

Osteons run longitudinally with the axis of the bone, functioning as weight-bearing pillars, resisting compression.

Front 2

Spongy bone is also composed of osteocytes and extracellular matrix, but the bone cells...

Back 2

Do not form clusters around the central canal like compact bone, instead they lie in trabeculae and get nutrients from substances diffusing into the canaliculi.

Front 3

Endochondral bones replace

Back 3

Bones that begin as masses of hyaline cartilage

Front 4

Osteoblasts vs osteoclasts

Back 4

Osteoblasts = build

Osteoclasts = breakdown

Front 5

Osteoblasts and osteoclasts are ________.

Back 5

Always breaking down bones.

Front 6

Endochondral bones vs intramembranous bones

Back 6

Endochondral bones = cartilage

Intramembranous bones = sheet-like.

Front 7

Extra blood calcium leads to _____ which leads to _______.

Back 7

Extra blood calcium leads to calcification which leads to increased bone calcium.

Front 8

Low blood calcium leads to ____ which leads to _____.

Back 8

Low blood calcium leads to parathyroid hormone (PTH) which leads to decreased bone calcium.

Front 9

Which is more important: blood calcium or bone calcium?

Back 9

Blood calcium.

Front 10

Which bones have styloid processes?

Back 10

- look up in book -

Front 11

Most bones of the skeleton are _____ bones that develop from ____.

Back 11

Endochondral bones, that develop from masses of hyaline cartilage.

Front 12

Once completely surrounded by the bony matrix, osteoblasts are called...

Back 12

Osteocytes.

Front 13

The ____ of the ____ bone is a ___ for the _____ gland.

Back 13

Sella turcica of the sphenoid bone is a seat for the pituitary gland.