SNC2D SCIENCE

Main FunctionsMain Functions1)1) Carries oxygen from lungs to cellsCarries oxygen from lungs to cells2)2) Carries carbon dioxide from cells to lungsCarries carbon dioxide from cells to lungs3)3) Carries nutrients from intestines to cellsCarries nutrients from intestines to cells4)4) Carries cellular wastes from cells to kidneysCarries cellular wastes from cells to kidneys

The 3 main parts of The 3 main parts of TheThe

Circulatory systemCirculatory system

The Blood The Blood VesselsVessels

The HeartThe Heart

BloodBlood

Types of Blood Types of Blood VesselsVessels

ArteriesArteries -Carry blood -Carry blood awayaway from the from the

HeartHeart VeinsVeins -Carry blood -Carry blood toto the Heart the Heart CapillariesCapillaries --connectconnect arteries to veins arteries to veins

Parts of The Parts of The HeartHeart

The Atria (or Atriums)The Atria (or Atriums) -Receiving Chambers-Receiving Chambers The VentriclesThe Ventricles -Pumping Chambers-Pumping Chambers The ValvesThe Valves -Prevents backflow-Prevents backflow The SeptumThe Septum -Divides the Heart-Divides the Heart

ANATOMY OF THE HEARTANATOMY OF THE HEART

ANATOMY OF THE HEARTANATOMY 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 BLOODPATHWAY OF BLOOD

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

PATHWAY OF BLOODPATHWAY OF BLOOD1)1) a. a. superior vena cavasuperior vena cava oror 1)b. 1)b. inferior vena cavainferior vena cava2)2) right atriumright atrium3)3) tricuspid valve (right A-V valve)tricuspid valve (right A-V valve)4)4) right ventricleright ventricle5)5) pulmonary valve (right semilunar valve)pulmonary valve (right semilunar valve)6)6) pulmonary arterypulmonary artery (goes to lungs)(goes to lungs)

PATHWAY OF BLOODPATHWAY 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 SOUNDSHEART SOUNDS

http://www.youtube.com/watch?v=H04d3rJCLCE

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

The Composition of The Composition of BloodBlood

The Plasma (Fluid) makes upThe Plasma (Fluid) makes up 55% of the blood 55% of the blood

volume.volume.

The Solids (Cells) make up The Solids (Cells) make up 45% of the blood 45% of the blood

volume.volume.0

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Blood Composition

Plasma Solids

Blood Blood PlasmaPlasma

97% Water97% Water Other 3%Other 3% -Antibodies and Proteins-Antibodies and Proteins - Nutrients and Wastes - Nutrients and Wastes

Blood Blood SolidsSolids

Red Blood CellsRed Blood Cells -Carry oxygen-Carry oxygen -Contain Hemoglobin-Contain Hemoglobin White Blood CellsWhite Blood Cells -Attack bacteria & other invaders-Attack bacteria & other invaders PlateletsPlatelets -Control the blood clotting -Control the blood clotting

processprocess

Activity 3-3 P. 101Changing Your Pulse Rate

Homework: P. 107 #1-4