A PowerPoint Presentation on the topic- "Animal Tissues".

3. • Multicellular (large) organisms function more
efficiently if cells become specialized for
specific functions.
• There are four types of tissues found in
animals: epithelial, connective, nerve, and
muscle tissue.
• Sponges do not have tissues.

5. Epithelial Tissue
(Covering)
• Tightly-joined closely-packed cells
• One side of exposed to air or internal
fluid, other side attached to a basement
membrane
• Covers outside of the body and lines
internal organs and cavities
• Barrier against mechanical injury,
invasive microorganisms, and fluid loss
• Provides surface for absorption,
excretion and transport of molecules

9. • The muscular tissue are made of muscle cells and these cells
are elongated and large sized , so they are also called the
muscle fibres
• The movement of the body or limbs are brought about by
the contraction and relaxation of the contractile protein
present in the muscle cells.
• Most of the muscular tissue is attached to the bones and
hence are called the skeletal muscles
• The movement of the muscles can be controlled as well as
uncontrolled
• The type of muscles in which the movement is under our
control are called the voluntary muscles
• And the type of muscles where the movement cannot be
controlled are called the involuntary muscles

11. Nervous
tissue