[UNIT 1 TEST]
Cartilage and bone are considered connective tissues. As was true
with the connective tissues proper, these tissues contain various
amounts and types of matrix, fibers and cells. Included here are:
At the left the bracket indicates the hyaline cartilage. At the right
this tissue is more highly magnified. The chondrocytes (A) are
located in lacunae (C). The matrix (B) contain collagen
fibers that are so fine they are not visible in tissue preparations.
Locations: "C" rings in the trachea, nose, articular
ends of bones, fetal skeleton
Function: precursor to bone, support
Elastic cartilage is contained within the bracket at the left. This
tissue is more highly magnified at the right. The chondrocytes
(A) are contained in lacunae (C). The matrix (B)
contains abundant elastic fibers.These fibers give great flexibility
to this tissue.
Locations: ear, auditory canal, epiglottis
Functions: flexible support
These micrographs are of intervertebral disc tissue. At the left
fibrocartilage is found in the area between the parallel lines. This
cartilage type is recognized by chondrocytes (A) oriented in
rows. Even when the tissue is highly magnified (as at the
right), the lacunae, which hold the chondrocytes, are not visible.
The matrix (B) contains numerous fine collagen fibers. These
fibers give the tissue durability.
Locations: pubic symphysis, intervertebral discs
Functions: supports, withstands compression
In the compact bone micrograph at the left, several complete osteons
are visible. In the center of the osteon is the central canal
(A) which hold the blood vessels and a nerve. These canals are
surrounded by concentric rings of inorganic matrix, the
lamellae (B). Between the lamellae are bone cells, the
osteocytes (C) located in lacunae. Nutrients diffuse from
cell to cell through the canaliculi (D).
[UNIT 1 TEST]
Function: framework, protection
This page was last updated in August,
All micrographs are the property of Sherri Wick.
Students of Biology 2740 and 2840 are welcome to use this page in the
study and review of lecture and lab materials in the Human Physiology
and Anatomy courses.
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Author: Sherri Wick, Coordinator and
Instructor - Human Physiology and Anatomy Laboratories
University of Nebraska at Omaha
Allwine Hall 211E, 554-2343