SNC2D SCIENCE. Main Functions 1)Carries oxygen from lungs to cells 2)Carries carbon dioxide from cells to lungs 3)Carries nutrients from intestines to.

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Presentation transcript:

SNC2D SCIENCE

Main Functions 1)Carries oxygen from lungs to cells 2)Carries carbon dioxide from cells to lungs 3)Carries nutrients from intestines to cells 4)Carries cellular wastes from cells to kidneys

The 3 main parts of The Circulatory system The Blood Vessels The Blood Vessels The Heart The Heart Blood Blood

Types of Blood Vessels Arteries Arteries  -Carry blood away from the Heart Veins Veins  -Carry blood to the Heart Capillaries Capillaries  - connect arteries to veins

Parts of The Heart The Atria (or Atriums) The Atria (or Atriums)  -Receiving Chambers The Ventricles The Ventricles  -Pumping Chambers The Valves The Valves  -Prevents backflow The Septum The Septum  -Divides the Heart

ANATOMY OF THE HEART

Label the structures and functions of the heart from your handout. Refer to your text page 100 You have 10 minutes!

PATHWAY OF BLOOD Make a list of the structures that a red blood cell would pass through when moving in and out of your heart. (ok...maybe you figured it out that this is the order of the numbered structures in your diagram ;-)

PATHWAY OF BLOOD 1) a. superior vena cava or 1)b. inferior vena cava 2) right atrium 3) tricuspid valve (right A-V valve) 4) right ventricle 5) pulmonary valve (right semilunar valve) 6) pulmonary artery (goes to lungs)

PATHWAY OF BLOOD 7)pulmonary vein 8) left atrium 9) Mitral valve (left AV valve) 10) left ventricle 11) Aortic valve (left semilunar valve) 12) aorta

HEART SOUNDS When you hear your heart beating, what are you actually listening to?

The Composition of Blood The Plasma (Fluid) makes up The Plasma (Fluid) makes up  55% of the blood volume. The Solids (Cells) make up The Solids (Cells) make up  45% of the blood volume.

Blood Plasma 97% Water 97% Water Other 3% Other 3%  -Antibodies and Proteins  - Nutrients and Wastes

Blood Solids Red Blood Cells Red Blood Cells  -Carry oxygen  -Contain Hemoglobin White Blood Cells White Blood Cells  -Attack bacteria & other invaders Platelets Platelets  -Control the blood clotting process

Activity 3-3 P. 101 Changing Your Pulse Rate Homework: P. 107 #1-4

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