Download SPECIALIZED CELLS

Epithelial Cells form Epithelial Tissue
• Structure:
– Epithelial Cells pack tightly together and form
continuous sheets that line different parts of the body.
• Function:
– Protection, secretion, absorption, and transport
• Examples:
– Inside the mouth (cheek cells)
– Line organs like the stomach
– Surround the outside of organs
– Make the outer layer of skin
MUSCLE TISSUE
• Structure:
– Muscle cells make specialized tissue that can contract.
– Muscle tissue contains the specialized proteins actin
and myosin that slide past one another.
• Function:
– Allows for movement of limbs and contraction.
• Examples:
– Heart – Cardiac Muscle
– Body Movement—Skeletal Muscle
– Digestive Tract, Veins/Arteries, Bladder—Smooth
Muscle
NERVE TISSUE
• Structure:
– Elongated cells with many branches.
• Function:
– Has the ability to generate and conduct electrical
signals in the body.
– These signals are managed by the brain and
transmitted down the spinal cord to the body.
White Blood Cell
• Structure:
– Large, flexible cells
– Covered in proteins that recognize invaders.
• Function:
– Part of your immune system.
– Fight off bacteria and other invaders.
• Examples:
– Neutrophils – engulf bacteria
– Basophil – Release histamine to promote and
inflammatory response.
Plant Leaf vs. Plant Stem
• Leaf
– Contains Guard Cells that open and close to allow
for gas exchange
– Lined with Chloroplasts
• Stem
– Contain Xylem and Phloem that carry food and
water up the stem of the plant.
Levels of Organization
1. Cells
2. Tissues – groups of
individual cells
3. Organs – groups of
tissues working
together
4. Organ Systems –
groups of organs that
work together for a
specific function
5. Organism