Download Lab 2 tissues

Eukaryotic cells
animal and plant cells
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Bio10 Lab 2
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Cells and Tissues
Which structures are
found only in plant
cells?
How are plant and
animal cells alike?
Epithelial tissues–
think coverings and linings
Tissues
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Tissue = a group of cells of
the same type
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Squamous epithelium
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Performs specific functions
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What are the 4 basic types?
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Epithelial tissue
Connective tissue
Muscle tissue
Nervous tissue
Flat cells
Found lining the lungs,
ducts and blood
vessels
Know their functions!
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See Ch. 24 in your text
Epithelial tissue
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Epithelial tissue
Cuboidal epithelium
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Cube-shaped cells
Line kidney tubules
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Columnar epithelium
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Cells are shaped like
columns
Nuclei often found near
bottom of cell
Lines the digestive
tract
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Epithelial tissue
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Ciliated columnar
epithelium (or
pseudostratified
epithelium)
Line parts of the
respiratory tract
Cilia provide protection,
help move mucus
Connective tissue
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Adipose tissue (fat)
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Bone
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Binds structures together
Provides support, stores fat, forms
blood cells
Connective tissue
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Cells store fat
The cells looks like ‘ghosts’
because the fat was
washed out when the slide
was prepared
Connective tissue
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Connective tissue
Provides rigid support
Made of a hard matrix of calcium
salts deposited around protein
fibers
Bone cells (osteocytes) are
found in lacunae arranged in
concentric circles
Bone is not static–it’s being
remodeled constantly
Hyaline cartilage
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Cells found in chambers
called lacunae
Separated by a flexible
matrix rich in protein
Provides flexible support
to nose, windpipe
(trachea), at ends of
bones
Connective tissue
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Osteoporosis
progressive loss of bone
density, thinning of bone
tissue and increased
vulnerability to fractures
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Connective tissue
Muscle tissue
Blood cells are produced
in bone marrow
Red blood cells transport
oxygen
White blood cells fight
infection
Platelets are important
for blood clotting
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Muscle tissue
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Muscles are the
motors of the body
3 kinds of muscles
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Cardiac muscle
Skeletal muscle
Smooth muscle
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Walls of blood
vessels, stomach,
intestine
Muscle tissue
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Smooth muscle
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Muscle tissue
Skeletal muscle
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Spindle-shaped cells
Each cell has a single
nucleus
Organized into sheets of
cells
Moves the bones of the
skeleton
During development,
several cells fuse to form a
very long fiber (or cell)
with many nuclei
The stripes are due to
actin and myosin filaments
within the cell. These
filaments power muscle
contraction.
Nervous tissue
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Cardiac muscle
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Responsible for the heart
beat
Cells are branched and
highly interconnected
Promotes the rapid
spread of the electrical
signal that initiates
contraction
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Neurons
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Or nerve cells
Carry nerve impulses, or
electrical signals, from the
dendrites to the cell body
and down the length of the
axon where they pass the
signal to a neighboring cell
The myelin sheath
“insulates” the axon
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