Bone tissue AP1

Bone Structure

100

The long shaft of a bone is called?

Diaphysis 

200

The part of the bone where red blood vessels are, and the most outer layer of the bone.

Periosteum

300

This structure is only in children before complete bone formation

Epiphyseal plate 

400

Where does blood formation in bones occur?

Bone marrow 

Marrow cavity 

500

___ is compact bone tissue

and

___ is spongy bone 

Osteons

Trabeculae 

Bone Cells

100

This cell build up bone

osteoblast 

200

This cell breaks bone tissue down

osteoclasts

300

unipotent stem cells, that divide when pressure/stress us applied. They mostly reside in the periosteum

Osteogenic cells 

400

Osteocytes

Osteoblast thats trapped, mature bone cells or lacunae 

500

Name the family of bone cells, and the outlyer

Family: Osteogenic, osteoblast, osteocyte

Outlyer: Osteoclasts 

Bone Histology & Hormones

100

___ are the ring sturctures

and 

__ are the holes 

lamella 

lacunae

200

1/3 of the bone matrix is considered ___. It is ___ based, and provides flexibility. 

Snap> Shatter

Organic, carbon based

300

This hormone is AKA Vitamin D. It raises blood Calcium, and tells osteoclasts to dissolve bone 

Calcitrol

400

This hormone also raises blood calcium, and inhibits collegen deposition. It promotes calcitrol synthesis 

Parathyroid Hormone 

500

Calcitonin does what?

lowers blood calcium, reduces osteoclast acitivity/ increases osteoblast activity.

Ossification Process

100

Intramembranous begins with ___ in which 2 structures.

- Thin sheet of mesenchyme 

- skull and clavicle 

200

Which stage of intramembranous ossification does the formation of spongy bone occur.

stage 3, this is also the step where blood supply formation occurs.

300

Endochondral ossification begins with what, in what structures?

- hyaline cartilidge

-everything else 

(mesenchyme->cartilidge->bone)

400

What is the early cartilidge model called in endochondral ossification? What is is called later on?

perichondrium

periosteum 

500

At what stage of vasuclar invasion occur in endochondral ossification? Also,this is where the marrow cavity forms as well as the 2nd ossification center.

step 3, this is AKA specialization. 

Histology of Metaphasis

100

Where does this happen?

 epiphyseal plate

transitional zone at the edge of an epiphyseal plate (estrogen feuls this) 

200

Active cartilidge is AKA?

zone of cell proliferation

300

Resting cartilidge is AKA

zone of reserve cartilidge. Weak blood supply 

400

The middle layer of the 5 layers is where ___ occurs. And is known as?

Cell enlargement 

Zone of cell hypertrophy 

500

The blood supply is divided into 2 regions what are they from superficial to deep

Superficial: Zone of cell calcification 

Deep: Zone of cell deposition