Connective Tissues
Forms of Connective Tissue
Connective tissue proper
Forms of Connective Tissue
Special connective tissues
Forms of Connective Tissue
Supporting (skeletal) connective tissues
Functions of Connective Tissue
Distinctive features of connective tissues
Connective Tissue:
Loose irregular (areolar) CT
(Resident cells & Fibers)
Loose irregular CT
Resident Cell:
Fibroblasts
Ground Substance
Loose irregular (areolar) CT
Fibers 1. COLLAGEN
DENSE irregular connective tissue
Type I Collagen:
Type II Collagen
Type III Collagen
Type IV Collagen
Fibers:
Elastin
Dense REGULAR connective tissue:
TENDON
(made by fibroblasts + collagen + ground substance)
*very straight, matrix of proteins
Defense cells in connective tissue
Resident, intrinsic, or fixed cells:
Defense cells in connective tissue
Migrating or wandering cells
After tissue injury, macrophages in regional lymph node engulf erythrocytes (RBC's)
MACROPHAGES
*main function = Phagocytose
(resident cell)
MAST Cells
Main function: release histamine via granules
(resident cell)
Plasma Cells
Main function: antibody production
(differentiated B cells)
Resident cells
(clock-face nucleus and clearing indicating Golgi)
Fat cells
(Adipose Tissue)
2 Types:
1. Unilocular (yellow/white fat)
2. Multilocular (brown fat)
Fat cells
(Adipose Tissue)
1. Unilocular (yellow/white fat)
Fat cells
(Adipose Tissue)
2. Multilocular (brown fat)
HEAT generation
CARTILAGE
Type II Collagen
-Two types:
Elastic & Hyalin Cartilage
Hyaline Cartilage
(in the NOSE)
Type II Cartilage
-surrounded by chondroblasts, then there are perichondrial fibroblasts around the chondroblasts
Perichondrium
and
Cartilage Matrix
Joint Space / Articular Cartilage
(empty space = synovial fluid)
**LACKS perichondria fibroblasts & chondroblasts
(Cannot regenerate - painful: because underlying bone!)
Elastic Cartilage
(Epiglottis, part of the ear)
-basically hyalin cartilage BUT has a fibrous look, a form of elastic fibers
Fibrocartilage
**Contains both Types Collagen I and II
(cells lined up in rows - pattern present)
EXAM Question:
Hyaline Cartilage is composed of:
A. Elastic Fibers
B. Collagen I
C. Collagen II
D. Adipose Cells
