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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

Anus           Feces through the digestive system

Steps of Excretion:

1. Ammonia is carried by blood to the liver, where it is changed to urea
2. Urea is carried by blood to the kidney
3. In the kidneys, urea and water diffuse into tubes called nephrons
4. Urine flows from the kidneys to tubes called ureters
5. The ureters empty into a muscular organ called the bladder
6. When the bladder is full, urine leaves the body through the urethra

Atoms

Structure:

• Protons
• Neutrons
• Electrons
• Nucleus
• orbit

Chart

In the chart we put all the same info in the spaces it means info does not change

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