CIRCULATORY SYSTEM
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What are the functions of the Circulatory system?
Circulates blood, delivers O2 to cell respiration, removes CO2 waste, delivers nutrients (glucose) and hormones
What are the three important oragns of the Circulatory system?
Heart, blood vessels, Blood
Blood Cell production
Stem cells located in the bone marrow divides and develops into different kinds of white/red blood cells
Heart
Left side receives blood and sends it to the body/ Right side sends blood to the lungs and receives it from the body (no mixing of blood w/o O2)
How many chambers are in the heart?
4
What are the three blood vessels?
Arteries, Capillaries, Veins
Arteries
Moves blood away from the heart into the rest of the body
Capillaries
A critical transfer point for the bloodstream and lungs to meet
Veins
Moves oxygen-depleted blood back to the heart before pumping into the lungs
What is the GENERAL order of blood vessels?
Heart –> Arteries –> Arterioles –> Capillaries –> venules –> Veins
What happens in the capillaries line?
Exchanges oxygen, nutrients, and waste products with the surrounding cells and itssues
What are the 2 part systems in the Circulatory system?
Circulation to the lungs (Pulmonary)/ Ciculation to the Body (Systemic)
Circulation to lungs (pulmonary)
Blood gets O2 from lungs which in return blood drops off CO2 to lungs –> brings oxygen-rich blood from lungs to heart
Circulation to Body (Systemic)
Left side of the heart pumps O2 (rich blood) to the body which helps pick up nutrients from the digestive system collecting CO2 and cell waste
What organs does blood typically “stop” at?
Lungs, liver, kidney, bones, small intestines, Large intestines
Plasma
Liquid part of blood dissolving salts, sugars, proteins, etc.
Red Blood Cells (RBC)
Produced in the bone marrow, it is a small round flexible cell that transfers oxygen to the hemoglobin
White Blood Cells (WBC)
Sole purpose is defense and immunity
Platelets
Clots blood (either to prevent from bleeding or disrupt bleeding patterns)
Hemoglobin
Proteins that carries oxygen and is bonded to iron complex
How does exercise take part of the circulatory AND respiratory system?
Heart beats faster signaling the body to create more ATP, oxygen, and food for cells, and remove more carbon dioxide and waste out of cells
How does diseases take part of the circulatory system?
Poor lung/heart function causes the heart to beat faster making them work harder to bring in oxygen, food, and remove waste