ANIMAL TISSUES
LESSON OBJECTIVE
Classify animal tissues and specify the
function of each type.
GENERAL CHARACTERISTICS OF
ANIMALS
• Multicellular (many-celled)
• Eukaryotic (has distinct nucleus and membrane- bound
organelles
• Heterotrophic (produce their own food)
• Motile (capable of movement or locomotion)
• Reproduction (sexual and asexual)
GENERAL CHARACTERISTICS OF
EPITHELIAL TISSUE
A. Found on a body surface
either internal or external
B. Tightly packed cells
C. Free border or free surface
D. Rest on a basement
membrane
E. Nonvascular
FUNCTIONS OF THE EPITHELIAL TISSUE
FILTRATION
PROTECTION
(exposed/internal
surfaces from abrasion,
dehydration, and
destruction)
ABSORPTION
(every substances that
leaves or enters must
pass through the
epithelium)
SENSATION
(large sensory nerve
supply)
(lining of small
intestines absorbs
nutrients into blood)
SECRETIONS
(different glands
produce perspiration,
oil, digestive enzymes
and mucus)
EPITHELIAL TISSUE
Simple
Squamous
Stratified
Squamous
Columnar
Epithelium
Ciliated
Columnar E.
Cuboidal
Epithelium
Glandular
Epithelium
GENERAL CHARACTERISTICS OF
MUSCULAR TISSUE
A. Excitability (equated with
responsiveness)
B. Contractility (causes the fiber
to shorten resulting in either
pull on bones or the
movement of specific body
parts)
GENERAL CHARACTERISTICS OF
MUSCULAR TISSUE
C. Elasticity (the muscle’s
ability to return to its
original length when tension
is released
D. Extensibility (capability of
extending in length in
response to the contraction)
FUNCTIONS OF THE MUSCULAR TISSUE
BODY MOVEMENT
(requires skeletal
muscles, bones, and
joints to work together)
HEAT PRODUCTION
(a byproduct of friction
caused by muscle
tissue contracting)
BODY STABILITY
(requires skeletal
muscle contractions to
help maintain body
positions)
STORING AND
MOVING
SUBSTANCES
(within the body
require both smooth
and cardiac muscle)
MUSCULAR TISSUE
Skeletal Muscle
• Striated
• Voluntary
Smooth Muscle
• Unstriated
• Involuntary
Cardiac Muscle
• Striated
• Involuntary
GENERAL CHARACTERISTICS OF
CONNECTIVE TISSUE
A. Composed of cells which maybe
single, in twos or in four and are
usually enclosed within empty
spaces called lacunae
B. These cells are far apart, thus
necessitating a larger amount of
intercellular substance (matrix)
between them
GENERAL CHARACTERISTICS OF
CONNECTIVE TISSUE
A. The matrix is secreted by the cells
and contains other substances which
help strengthen the tissue, therefore
function for support.
B. It also contains fibers, elastic or
collagenous substances that
facilitates its binding and connection
function.
FUNCTIONS OF THE CONNECTIVE TISSUE
FILLS UP SPACE
(fills up spaces within
or between organs like
the areolar,
subcutaneous tissue)
SUPPORT AND
CONNECTION
(supports, surrounds
and interconnect other
types of tissue)
TRANSPORT
PROTECTION
(transporting of fluids
and dissolved
materials through
blood)
(protection of delicate
organs through
cartilage and bone)
ENERGY STORAGE
DEFENSE
MECHANISM
(storing energy
reserves in the form of
triglycerides)
(defends the body
from invading
microorganism)
CONNECTIVE TISSUE
Connective Tissue
Proper
• Areolar Tissue
• Adipose Tissue
• Fibrous Tissue
Supportive
Connective Tissue
• Bone
• Cartilage
Fluid Connective
Tissue
• Blood
• Lymph
GENERAL CHARACTERISTICS OF
NERVOUS TISSUE
A. Specialized for the transmission of
the impulses.
B. Composed of neurons which are
nerve cells with long processes or
nerve fibers.
C. Neuron is the functional unit of
the nervous system
D. Neurons live and function optimally
for a lifetime