Quick Quiz Identify the types of epithelial tissue below: hint- look at the surface cells A B C D.
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Transcript of Quick Quiz Identify the types of epithelial tissue below: hint- look at the surface cells A B C D.
Quick QuizQuick QuizIdentify the types of epithelial tissue below: Identify the types of epithelial tissue below: hint- hint-
look at the surface cellslook at the surface cells AA
BB
CC
DD
Tissues: Connective Tissues: Connective TissueTissue
Chapter 3Chapter 3
Connective TissueConnective Tissue
Slide 3.53Slide 3.53Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Found everywhere in the body
Includes the most abundant and widely distributed tissues
Functions
Binds body tissues together
Supports the body
Provides protection
Connective Tissue Connective Tissue CharacteristicsCharacteristics
Slide 3.54Slide 3.54Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Variations in blood supply
Some tissue types are well vascularized
Some have poor blood supply or are avascular
Extracellular matrix
Non-living material that surrounds living cells
Extracellular MatrixExtracellular Matrix
Slide 3.55Slide 3.55Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Two main elements Ground substance – mostly water along
with adhesion proteins and polysaccharide molecules
Fibers Produced by the cells Three types
Collagen fibers Elastic fibers Reticular fibers
Connective Tissue TypesConnective Tissue Types
Slide 3.56Slide 3.56Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Bone (osseous tissue) Composed of:
Bone cells in lacunae (cavities)
Hard matrix of calcium salts
Large numbers of collagen fibers
Function: protect and support the body Figure 3.18a
Osseous Connective TissueOsseous Connective Tissue
Challenge ProblemChallenge Problem
1. ‘Oss’ at the beginning of a word 1. ‘Oss’ at the beginning of a word means _______means _______
2. Give three jobs of connective tissue2. Give three jobs of connective tissue 3. _________ are the spaces in the 3. _________ are the spaces in the
extracellular matrix where bone cells extracellular matrix where bone cells livelive
4. What are some problems if 4. What are some problems if ligaments rupture?ligaments rupture?
Connective Tissue TypesConnective Tissue Types
Slide 3.57Slide 3.57Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Hyaline cartilage Most common
cartilage
Composed of:
Abundant collagen fibers
Rubbery matrix
Entire fetal skeleton is hyaline cartilage Figure 3.18b
Hyaline CartilageHyaline Cartilage
Connective Tissue TypesConnective Tissue Types
Slide Slide 3.58a3.58a
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Elastic cartilage
Provides elasticity
Example: supports the external ear
Elastic CartilageElastic Cartilage
Connective Tissue TypesConnective Tissue Types
Slide Slide 3.58b3.58b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Fibrocartilage
Highly compressible
Example: forms cushion-like discs between vertebrae
Figure 3.18c
FibrocartilageFibrocartilage
Connective Tissue TypesConnective Tissue Types
Slide 3.59Slide 3.59Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Dense connective tissue Main matrix element
is collagen fibers
Cells are fibroblasts
Examples Tendon – attach
muscle to bone
Ligaments – attach bone to bone Figure 3.18d
Dense Connective TissueDense Connective Tissue
Connective Tissue TypesConnective Tissue Types
Slide 3.60Slide 3.60Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Areolar connective tissue Most widely
distributed connective tissue
Soft, pliable tissue
Contains all fiber types
Can soak up excess fluid Figure 3.18e
Areolar Connective TissueAreolar Connective Tissue
Connective Tissue TypesConnective Tissue Types
Slide 3.61Slide 3.61Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Adipose tissue Matrix is an areolar tissue in which fat
globules predominate
Many cells contain large lipid deposits
Functions Insulates the body
Protects some organs
Serves as a site of fuel storage
Figure 3.18f
Adipose TissueAdipose Tissue
Challenge ProblemChallenge Problem
1. Identify one characteristic of 1. Identify one characteristic of areolar connective tissue. areolar connective tissue.
2. Adipose is also known as _____2. Adipose is also known as _____ 3. Muscle to bone= 3. Muscle to bone= 4. Bone to bone=4. Bone to bone= 5. In which part of cells of adipose 5. In which part of cells of adipose
tissue are droplets of fat stored?tissue are droplets of fat stored?
Connective Tissue TypesConnective Tissue Types
Slide 3.62Slide 3.62Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Reticular connective tissue Delicate network of
interwoven fibers
Forms stroma (internal supporting network) of lymphoid organs Lymph nodes Spleen Bone marrow
Figure 3.18g
Reticular Connective TissueReticular Connective Tissue
Connective Tissue TypesConnective Tissue Types
Slide 3.63Slide 3.63Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Blood
Blood cells surrounded by fluid matrix
Fibers are visible during clotting
Functions as the transport vehicle for materials
Figure 3.18h
BloodBlood
Challenge ProblemChallenge Problem1.1. Through which tissue does oxygen and Through which tissue does oxygen and
carbon dioxide travel to get to all parts carbon dioxide travel to get to all parts of the body?of the body?
2.2. The spleen and lymph nodes are made The spleen and lymph nodes are made of _______ connective tissue.of _______ connective tissue.
3.3. In which organelle of cells of adipose In which organelle of cells of adipose tissue are droplets of fat stored?tissue are droplets of fat stored?
4.4. What type of connective tissue are What type of connective tissue are intervertebral discs made?intervertebral discs made?
Quick QuizQuick Quiz
Name two functions of Connective Name two functions of Connective TissueTissue