Organization within the Human Body

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Presentation transcript:

Organization within the Human Body

Cells Smallest unit of structure & function Have specialized functions Examples Nerve cells (neurons) Blood cells Bone cells

Tissues Group of similar cells working together to carry out the same function 4 basic types of tissue in the human body Nerve tissue Muscle tissue Epithelial tissue Connective tissue

Nerve Tissue Carry impulses back & forth to the brain from the body

Muscle Tissue Contracts and shortens making body parts move “movement”

Epithelial Tissue Covers the surface of the body inside & outside As lining or covering of internal organs Outside As layer of skin

Connective Tissue Connects all parts of the body and provides support Examples Tendons Ligaments Cartilage

Tendon

Ligament

Cartilage

Organs Two or more types of similar tissues working together to perform the same function Example Heart made of muscle & connective tissues which work together (function) to pump blood throughout the body.

Systems Two or more organs working together to perform a specific function. 11 different organ systems in the body Circulatory Digestive Endocrine Excretory (Urinary) Immune Integumentary (Skin) Muscular Nervous Reproductive Respiratory Skelatal

CELLS TISSUES ORGANS SYSTEMS