Chapter 4
Tissue: The Living Fabric
137
4
(j)
Others: bone (osseous tissue)
Description:
Hard, calcified matrix containing
many collagen fibers; osteocytes lie in
lacunae. Very well vascularized.
Function:
Supports and protects
(by enclosing); provides levers for the muscles
to act on; stores calcium and other minerals
and fat; marrow inside bones is the site for
blood cell formation (hematopoiesis).
Location:
Bones
Photomicrograph:
Cross-sectional view of bone (125
m
).
Lacunae
Lamella
Central
canal
(k)
Connective tissue: blood
Description:
Red and white blood cells in a
fluid matrix (plasma).
Function:
Transport respiratory gases,
nutrients, wastes, and other substances.
Location:
Contained within blood vessels.
Photomicrograph:
Smear of human blood (1670
m
); shows two
white blood cells surrounded by red blood cells.
White blood cells:
• Lymphocyte
• Neutrophil
Red blood
cells
(erythrocytes)
Plasma
Figure 4.8
(continued)
(j)
Bone. (For a related image, see
A Brief Atlas of the Human Body
,
Plate 20.)
(k)
Blood. (For related images, see
A Brief Atlas of the Human Body
, Plates 22–27.)
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