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Science sumary

Integumentary system

[pic 1]

Functions of the integumentary system:

• Way to eliminate wastes
• Regulates body temperature
• Keep water in your body

Cardiovascular system

[pic 2]

Components of blood:

• Red blood cells: carry O and CO2
• White blood cells: fight against diseases
• Plasma: transport minerals and nutrients
• Platelets: form clot and stop bleeding

What is the difference between artery and vein?

• Artery:blood rich in O2 from the heart to the body
• Vein: carry blood poor in O2 from the body to the heart

Track of nutrients, oxygen, waste and carbon dioxide in our cardiorespiratory system

Nutrients: Small intestine (vili)         Blood          All body cells[pic 3][pic 4]

Oxygen: Lungs (alveoli)                 Blood(capillaries)                All body cells[pic 5][pic 6]

Waste: Comes from body cells           Blood                   Excretory[pic 7][pic 8]

System

Carbon Dioxide: Comes from body cells     [pic 9]

Blood             Lungs (alveoli)           Traquea           Mouth[pic 10][pic 11][pic 12]

Excretory System

[pic 13]

The function of the Excretory System is to remove wastes such as sweat, C02, urea

Cases:

• When I feel hot, I sweat through the skin
• When I breathe, I exhale C02 through the lungs
• When I urine, I release urea through the kidney
• When I run, I sweat through the skin
• When I move my bowel, I release feces through the rectum/anus

Which are the organs involved in the Excretory System? How?

Organ:                              How?

Kidney        Urea through the urinary system

Lungs         C02 through the respiratory system

Skin             Sweat through the intergumentary system

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