Download - Animal Tissue 1
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1
2.5 : Cells are grouped into tissues
(A) Animal
CELL STRUCTURE & FUNCTION
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CELL STRUCTURE AND FUNCTIONS
Prokaryotic and eukaryotic cells
Microscopic structures of plant and animal
cell
Structures & functions:Cell membrane and
organelles
Cell transport
Cells are grouped into tissue
Animal Plant
Epithelial Nerve Muscle Connective
MeristemParenchymaCollenchymaSclerenchyma Xylem Phloem
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Types&
Specialized cell
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From a ball of cells (embryo)
Nerve cells
osteocytes Blood cells
Muscle cells
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cell organization
cell
tissue
organ
system An integrated group of cell with
a common structure,
function, or both.
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Types of tissues
epithelial
muscle
nerve
connective
Striated muscle
Smooth muscle
Cardiac muscle Bonecartilage blood
squamous
cuboidal
columnar
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At the end of this lesson, student should be able to:
Describe the structure, distribution and function of the following cell:
a) Epithelial
b) Nerve
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Simplesttissues.
It can be built up into tissues of varying complexity.
Lining tissues : in it simplest form, it consists of a single layer of cells covering the surface of the body and the organs within it.
A) Epithelial Tissues
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Also lines various spaces and tubes ( in which situation it is usually referred to as endothelium).
Firmly attached to each other.
Rest on basement membrane
Have free surface
A) Epithelial Tissues
basement membrane
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A) Epithelial Tissues
MAIN FUNCTION Protection
OTHER FUNCTIONS
To increase the surface area for absorptionof material
Exchange materials by diffusion
As a gland ; secrete mucus and enzyme
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TYPES EPITHELIAL
Cell
Shape
SIMPLE
- single layer of cells
STRATIFIED
- multiple layers of cells
PSEUDO-STRATIFIED
-single layer but it appears to be stratified because the cells vary in length
SQUAMOUS
CUBOIDAL
COLUMNAR
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TYPES OF EPITHELIAL TISSUES
Simple EpithelialTissues
Stratified EpithelialTissues
PseudostratifiedEpithelialTissues
Simple squamousEpithelial tissues
Simple cuboidalEpithelial tissues
Simple columnarEpithelial tissues
Stratified squamousEpithelial tissues
Stratified columnar
Epithelial tissues
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i) Simple Squamous Epithelial tissues
Cells are flattened
The sheet of cell is delicate, thin , and leaky
basement membrane