Download Organ Systems

Organ Systems
Objective 1 – 2
Levels of Organization
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Every organ system has the same basic design
Cells  Tissue  Organ  Organ System
Cells are the building blocks
Groups of Cells of the same type are Tissue
Groups of different types of Tissue working
together are an Organ
Groups of Organs working together are an
Organ System (Body System)
11 Organ Systems
Nervous
System
Integumentary
System
Skeletal
System
Muscular
System
Circulatory
System
Top
(from left to
right)
- Respiratory
System
- Digestive
System
- Excretory
System
Bottom
(from left to
right)
- Endocrine
System
- Reproductive
System
- Immune
System
Homeostasis
10 body systems are required for survival
 They work together to maintain a stable
internal environment (homeostasis)
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Nervous System

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Recognizes and
responds to stimulus
Neurons
Sensory Neurons carry
signals to the brain
2. Inter Neurons (brain)
interpret signals
3. Motor Neurons carry
signals from the brain to
the muscles
1.
Immune System

Functions
Protect from infection
2. Helps balance fluids
1.

White blood cells,
lymph nodes, mucus,
etc.
Reproductive System

Functions
Produce
reproductive cells
2. Nurture and protect
developing embryo
(females only)
1.
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Male: Urethra,
testes, etc.
Female: Ovary,
uterus, etc.
Integumentary System

Protective barrier
Environment
2. Sunlight
1.
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Skin, hair, nails, etc.
Skeletal System

Functions:
Structure
2. Support
3. Protection
4. Movement
1.
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Bones, cartilage, etc.
Muscular System

Functions
Movement
2. Circulates Blood
3. Helps with Digestion
1.
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Muscles
Circulatory System

Functions
Supplies cells
with oxygen and
nutrients
2. Removes waste
1.
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Heart, blood
vessels
Respiratory System

Functions
Provides oxygen
2. Removes carbon dioxide
1.

Nose, trachea, lungs,
etc.
Digestive System

Functions
Converts food into
nutrients the cells can
use
2. Eliminates waste
1.

Mouth, stomach,
intestines, etc.
Excretory System

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Eliminates
waste
Kidneys,
bladder,
urethra, etc.
Endocrine System

Functions
Growth
2. Development
3. Metabolism
1.

Pituitary gland, adrenals,
pancreas, etc.