Skeletal System 7 Bone Tissue

Question 1

Bone Cells and matrix are organized into 2 MAIN types of bone tissue:

Answer 1

Compact Bone

Spongy/ Trabecular Bone

Question 2

Define Compact Bone

Answer 2

Dense Osteous tissue

Location: Outer layer of bone

Contains: Osteocytes + Calcified Matrix

Question 3

Define Osteon:

Answer 3

Haversion Systems

The basic functional unit of compact bone

Contains: bone cells + bone matrix arranged in cylinders that run longitudinally

Question 4

Define a Central Canal:

Answer 4

Longitudinal, hollow tube

Function: Carries blood vessels + nerves

Run parallal to surface of bone

Question 5

Define a Volkmann’s Canal:

Answer 5

Transverse channels

Function: Connects the central canals of neighboring osteons

Run perpendicular to surface of bone

Question 6

Define Lamellae:

Answer 6

Layers of calcified matrix

Contains:

Osteocytes

Lacunae: small cavities that house bone matrix

Canaliculi: Tiny canals in b/w lacunae that allow osteocytes to communicate

Question 7

Define Concentric Lamellae:

Answer 7

Lamellae arranged in rings around central canals

Question 8

Define Circumferential Lamellae:

Answer 8

Runs parallel to bone surface

Location: Inner + outer boarders of compact bone

Question 9

The function of Osteons in compact bone:

Answer 9

Longitudinal orientation of osteons provide compressive strength