Module 3: Histology of Cartilage and Bone

ground substance, fibers, and cells

three main components of all connective tissue

hyaline cartilage

hyaline cartilage

hyaline cartilage

- nose

- ribs

where is hyaline cartilage found

-supports body structures -serves as a template for bone formation

function of hyaline cartilage

chondrocytes and chondroblasts

name the cellular components of all cartilages

cartilaginous matrix with collagen fibers

name the extracellular components of all cartilages

smooth ground substance, milky like

describe hyaline cartilage

cartilaginous matrix; hyaline cartilage

chondrocyte; hyaline cartilage

cell type; tissue type

chondrocyte; hyaline cartilage

cell type; tissue type

lacuna hyaline cartilage

lacuna

what space do the cells lie in in cartilage?

external ear and epiglottis

where is elastic cartilage found

provides flexible support

function of elastic cartilage

elastic fibers

what extracellular component does elastic cartilage contain that hyaline and fibrocartilage don't?

elastic fiber; elastic cartilage

structure; tissue type

chondrocyte; elastic cartilage

cell type; tissue type

chondrocyte; elastic cartilage

chondroblast; elastic cartilage

cell type; tissue type

chondrocyte; elastic cartilage

cell type; tissue type

chondroblast; elastic cartilage

easter eggs in grass, lots of elastic fibers visable

describe elastic cartilage

cartilaginous matrix

what is the network in this image?

elastic cartilage

fish eyes in a stream, lots of collage fibers are visible, very dense

describe fibrocartilage

intervertebral discs and menisci of knee

location of fibrocartilage

resists compression and absorbs shock

function of fibrocartilage

cartilaginous matrix; fibrocartilage

network; tissue type

collagen fiber; fibrocartilage

structure; tissue type

collagen fiber; fibrocartlige

structure; tissue type

fibrocartilage

chondrocyte; fibrocartilage

cell type; tissue type

chondrocyte; fibrocartilage

cell type; tissue type

lacuna; fibrocartilage

space; tissue type

chondroblasts; hyaline cartilage

cell type; tissue type

fibrocartilage

fibrocartilage

fibrocartilage

lacuna

small cavities

endosteum

delicate inner membrane lining medullary cavity and spongy bone

endosteum

endosteum

compact bone

outer surface of all the bones

where is compact bone found?

- structural support

- mineral storage

- leverage for muscle action

function of compact bone

- osteocytes

- osteoblasts

- osteoclasts

cellular components of compact and spongy bone

lamella

extracellular component of compact bone

trabecula

extracellular components of spongy bone

canaliculus

extremely small tubular passage or channel

canaliculus; compact bone

structure; tissue type

canaliculus; compact bone

structure; tissue type

circumferential lamella

large plates of bone that encircle the most superficial shaft of the entire bone organ

circumferential lamella

top arrow structure

interstitial lamella

plates of bone that fill up spaces between osteons

interstitial lamella; compact bone

structure; tissue type

lacuna; compact bone

space; tissue type (arrow on left)

osteon; compact bone

structure; compact bone

osteon

functional unit of compact bone

osteon; compact bone

structure; tissue type

concentric lamella

circular layers of calcified matrix (individual layers) that make up the osteon

concentric lamella; compact bone

structure (upper arrows); tissue type

central canal; compact bone

space (white part); tissue type

lacuna

cavities that house ostocytes

osteocyte

produce organic portion of the matrix

osteocyte; compact bone

cell (middle arrow); tissue type

compact bone

tissue type

medullary cavity

cavity within the shaft of the long bones filled with yellow bone marrow

medullary cavity

name the space the arrow points to

periosteum

dense regular connective tissue covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles, does not touch spongy bone

periosteum

layer (second arrow on right)

periosteum

layer (last pair of brackets)

periosteum

layer

periosteum

spongy bone

heads of long bones and the middle layer of flat bones

location of spongy bone

- reduces stress

- absorbs shock

- housed bred bone marrow for RBC function

function of spongy bone

spongy bone

tissue type

spongy bone

tissue type

lacuna with osteocyte; spongy bone

space and cell (arrow); tissue type

lacunae with osteocytes; spongy bone

space and cell (arrow); tissue type

marrow cavity

small spaces within the honeycomb-like structure of spongy bone, mainly containing red marrow in both adults and children for blood cell

trabecula

structural component of spongy bone; irregularly arranged, branched rods and plates of bone that form a supportive, interconnected mesh;

the spaces between are filled with red bone marrow and blood vessels, where blood cells are produced.

trabeculae; spongy bone

structure; tissue type

trabecula; spongy bone

structure (arrow); tissue type

e

add this to the end to make it plural

spongy bone

tissue type

spongy bone

tissue type

top arrow: compact bone:

bottom arrow: spongy bone

tissue types (2 arrows)