Check In

Check InPlease draw a rough sketch of a human heart and

label the four chambers. [4]

HomeworkStudy Biology for 20 minutes.

Check InPut these in order as blood travels through the body:

Aorta Left atrium

Pulmonary vein

Lung capillaries Left ventricle

Pulmonary artery

HomeworkStudy Biology for 20 minutes.

Check InOutline the path of a blood cell from the lungs to a

cell in the finger using sequencing language. [6]

HomeworkStudy Biology for 20 minutes.

Review: Circulation Anatomy

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1. Vena cava2. Right atrium

3. Right ventricle4. Pulmonary artery

5. Lung capillaries6. Pulmonary vein

7. Left atrium8. Left ventricle

9. Aorta10. Systemic capillaries

11. valves

Right atrium

Right ventricle

Posteriorvena cava

Capillaries ofabdominal organsand hind limbs

Aorta

Left ventricle

Left atriumPulmonary vein

Pulmonaryartery

Capillariesof left lung

Capillaries ofhead and forelimbs

Anteriorvena cava

Pulmonaryartery

Capillariesof right lung

Pulmonary vein

Aorta

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Another look at human circulation

Oxygen-rich:6, 7, 8, 9

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Oxygen-poor:1, 2, 3, 4

Which numbers show areas where blood is oxygen-rich? Oxygen-poor?

Circulatory System: Practice1. A blood cell that starts in the small intestine moves

nutrients to the heart via the __.2. It enters the heart in the __.3. Next, it is pumped to the __ and then into the __.4. It passes through the __ before moving to the __.5. The blood cell then returns to the heart in the __.6. It is pumped to the __ and leaves the heart via the

__, where it can be sent anywhere in the body.

Notes – Human Heart“Each day your heart beats about 100,000 times, circulating blood through nearly 96,000 kilometers of blood vessels--roughly one-quarter of the distance to the moon. Over 70 years, your heart will beat about 2.5 billion times.”

The Human Heart

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1. Right Atrium2. Right Ventricle

3. Left Atrium4. Left Ventricle

The Human Heart1. Right Atrium

2. Right Ventricle3. Left Atrium

4. Left Ventricle5. Superior Vena Cava

6. Inferior Vena Cava7. Pulmonary Arteries (2)

8. Pulmonary Veins (4)9. Aorta

10.Atrio-Ventricular (AV) Valves (2)

11. Semi-Lunar Valves

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The Human Heart: Oral Practice1. A blood cell that starts in the small intestine

moves nutrients to the heart via the __.2. It enters the heart in the __.3. Next, it is pumped through a __ to the __.4. From there it travels through a __ and into the

__.5. It passes through the __ before moving to the

__.6. The blood cell then returns to the heart in the

__.7. It is pumped through a second __ into the __.8. The blood cell finally leaves the heart through

a second __ into the __ where it can be sent anywhere in the body.

The heartbeat cycle• Each cycle equals

one heartbeat. • The cycle repeats:

1. Atria and ventricles relax and fill with blood

2. Both atria contract to force blood into ventricles.

3. Both ventricles contract to force blood into aorta and pulmonary arteries.

Heart Rate• Heart rate or Pulse the

number of heart beats in one minute.– Arteries stretch each time

ventricles contract.• Heart Beat: caused by

closing of valves. Typically “lub-dup, lub-dup.”– Lub = closing of A.V. valves.– Dup = closing of Semilunar

valves.• Heart murmurs: hissing

caused by valve defects.

The Human Heart: Written Practice1. A blood cell that starts in the small intestine

moves nutrients to the heart via the __.2. It enters the heart in the __.3. Next, it is pumped through a __ to the __.4. From there it travels through a __ and into the

__.5. It passes through the __ before moving to the

__.6. The blood cell then returns to the heart in the

__.7. It is pumped through a second __ into the __.8. The blood cell finally leaves the heart through

a second __ into the __ where it can be sent anywhere in the body.

I Quizzies…

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1. Superior vena cava2. Right pulmonary vein

3. Right atrium4. R. atrio-ventricular

(a.v.) valve5. Right ventricle

6. Inferior vena cava7. Aorta

8. Pulmonary artery9. Semi-lunar valves

10. Left pulmonary vein11. Left atrium

12. Left a.v. valve13. Septum

14. Left ventricle

Check OutPlease draw a rough sketch of a human heart and

label the 4 chambers and the 4 tubes that enter and leave the heart. [8]

HomeworkStudy Biology for 20 minutes.

Check OutOutline how the heart beats. [3]

HomeworkStudy Biology for 20 minutes.