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Aim – How do materials circulate through the body?

Do Now – Why are the skeletal and muscular system needed?

• • • • • • • The list below includes three organ systems that are directly used when a human runs. circulatory system muscular system skeletal system Which system should also be included in the list?

(1) immune system (3) digestive system (2) reproductive system (4) nervous system

Aim – How do materials circulate through the body?

Blood

• • • • • • What is blood made of?

Red blood cells, white blood cells, water (plasma), and platelets What do RBC’s do?

Carries Oxygen (O 2 ) from lungs to the body, and carries CO 2 from body to lungs What to WBC’s do?

Help fight infections

Aim – How do materials circulate through the body?

Blood

• • • What else does blood carry?

Nutrients to our cells Wastes from our cells

Aim – How do materials circulate through the body?

• • • •

Blood vessels

Your blood is carried by 3 types of blood vessels Veins – carry blood to heart Arteries – carry blood away from heart Capillaries – connect veins and arteries, this is where materials are exchanged

Aim – How do materials circulate through the body?

Heart

• Contains 4 chambers – 2 atriums (upper chambers) – 2 ventricles (lower chambers)

Aorta- largest artery in the body, pumps blood filled with oxygen

Aim – How do materials circulate through the body?

FLOW

• • • • • The heart pumps blood, Oxygen, and other things like nutrients to the body via the arteries- AWAY Materials are exchanged at the capillaries Veins bring the blood back The circulatory system also goes through the liver and kidneys. These filter out unwanted materials and in the case of the kidney bring it to the bladder. http://medtropolis.com/virtual-body/

• • https://www.youtube.com/watch?v=LqhvmUE dOYY Circulatory rap

Aim – How do materials circulate through the body?

Defects

• Defects in this system can cause – Anemia – Heart disease – Murmurs – Heart attacks – Etc.

Aim – How do materials circulate through the body?

• • http://www.youtube.com/watch?v=NYB rJZQt4w http://www.youtube.com/watch?v=oZ1_TAwC UWw

• • http://www.thetech.org/sites/default/files/act ivity_3.pdf

wordbank

Aim – How do materials circulate through the body?

Exit ticket

• Describe the path of the circulatory system