1. “Cells, Tissues, Organs & Systems”
“Human body cells are organized as tissues, organs and systems.”

2. Levels of Organization
cells
tissues
Organs
Organ systems
organisms

3. Connective Tissue Cell
Fat Cells
Skin Cell
Cell
Smallest working unit that serves a specific job or function.
How does the shape of each cell relate to its function?
Connective Tissue Cell
Gland Cells
Muscle Cells
Red Blood Cells
Cartilage Cells
Bone Cells
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4. Cell
Os (Amoeba Sisters)

5. Tissues
Groups of similar cells
Found in all multicellular organisms
Ex. Muscle tissue, nerve tissue, skin tissue, etc.

6. Tissues of the Human Body
Cardiac Muscle
Epithelial Tissue
Striated Muscle
Smooth Muscle
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7. What other organs can you think of?
Made of similar tissues that work together to perform a specific activity
What other organs can you think of?
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8. Ex. Lungs, kidneys, heart, etc.

9. Can you name some of the human body systems?
Organ System
Groups of one or more organs working together to perform functions for the organism.
Can you name some of the human body systems?
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10. Organ Systems Digestive System Nervous System Circulatory System
Respiratory System
Urinary System
Reproductive System
Endocrine System

11. 1. Digestive System
Consists of:
Mouth
Liver
Esophagus
Gall Bladder
Stomach
Pancreas
Small Intestine
Large Intestine

12. Entire living thing that carries out all basic life functions.
Organism
Entire living thing that carries out all basic life functions.
Meaning… it’s made of cells, shares similar chemicals, can take in and use energy, grow & develop, reproduce, and sense & respond to the environment. Most organisms are made up of many cells but some consist of only one cell such as bacteria.
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13. Homeostasis Means BALANCE! Cells, Tissues, and Organs work
to keep your body balanced despite
what may be happening outside it.
Ex. Temperature, fluids, viruses, etc.
cY (homeostasis)

14. Activity Cell Specialization Worksheet. Tomorrow – Cell & Tissue Lab
Come to class first, and then to Lab