1. The Circulatory System
A Bloody Situation

2. The Case of the Missing Jewels
Late one April night, government agents received an anonymous tip that the National Art Museum was about to be robbed of its priceless jewel collection! When they arrived a the museum, they saw they were too late: the jewels were gone.
There was no one around, but there was evidence of a struggle. Blood was spattered all over a nearby wall. In another area, there was a smeared pool of blood. Hidden in the corner, investigators found a bloody knife.

3. Your Mission
You and your partner are investigators on the scene. Your job is to identify the blood and narrow down the suspects. Based on what you know about blood, come up with at least 3 forensic questions that could be answered by analyzing the blood.

5. Human Blood Major Components: BRAINPOP 1) Plasma 2) White Blood Cells
3) Red Blood Cells
4) Platelets

7. Suspended Materials Dissolved gases (CO2) Salt Glucose Amino acids
Hormones
Urea (wastes)

8. RED
Blood Cells
Bi-concave shape & no nucleus
Smaller than WBC
5 million per ml (most numerous!)
Produced in bone marrow
Live for 120 days
Contains hemoglobin which carries oxygen! (forms oxyhemoglobin)
Responsible for blood type

9. The “army” of the circulatory system
Fights foreign invaders (infection, viruses, allergens, bacteria)
WHITE
BLOOD
CELLS
Fewest in number
Produced in bone marrow
Have a nucleus
Largest
Most only live for a few days

10. Platelets Very small Needed for blood clotting Fragments of WBCs
Not as many as RBCs
Needed for blood clotting
Releases clotting factors and forms fibrin

11. Blood Types

15. As blood flows through the circulatory system, it moves through three types of blood vessels
1- arteries
2- capillaries
3- veins

19. Connects arteries to veins
BRAINPOP
smallest (only one cell thick!)
Connects arteries to veins
Sites where gases, nutrients and wastes are exchanged (diffuse into/out of blood)
carries blood back TO the heart from the body
VEINS have VALVES to prevent backflow of blood!
thickest, most muscular blood vessels
Must withstand powerful pressure produced when the heart contracts
Carries blood AWAY from heart

20. THE BLOODMOBILE!!!
Blood carries oxygen and nutrients away from the heart toward the body tissues!
Blood carries carbon dioxide and wastes back to the heart to be pumped to the lungs!

21. Let’s Review Blood Vessels!
Capillary
Vein
Artery

22. The Heart Large organ composed of thick muscle 4 chambers
2 atria (top)
2 ventricles (bottom)
Circulatory system - YouTube

23. 1. AORTA (largest artery – pumps oxygenated blood to body tissues)
13. Pulmonary Artery (“Pulmonary =Lungs”)
2. PULMONARY ARTERY (pumps deoxygenated blood to lungs)
12. Superior Vena Cava
11. Right Atrium (pumps deoxygenated blood into right ventricle)
3. PULMONARY VEINS (pumps oxygenated blood from lungs to left atrium)
10. Inferior Vena Cava (carries deoxygenated blood from body to right atrium)
4. Left Atrium (pumps oxygen rich blood to left ventricle
6. Left Ventricle (pumps oxygenated blood into aorta)
9 & 5. Valves (prevents backflow of blood)
8. Right Ventricle (pumps deoxygenated blood into Pulmonary Artery)
AORTA
7. Septum (divides the 2 sides of heart (prevents mixing of blood)

25. Types of Circulation the heart functions as 2 separate pumps
Pulmonary Circulation: the right side of the heart pumping blood to the lungs where oxygen is absorbed and carbon dioxide is released
Systemic Circulation: the left side of the heart pumps oxygen-rich blood that is returning from the lungs, away from the heart to the rest of the body
Coronary Circulation: the movement of blood through the vessels serving the heart muscle

28. Homework

30. Disorders of the circulatory system

31. #1 Healthy or unhealthy? Disease?

32. #2 Healthy or Unhealthy? Disease?

33. #3 Healthy or Unhealthy? Disease?

34. #4 Healthy or Unhealthy? Disease?

35. Hypertension
Description
Causes
Treatment/Prevention

36. Heart Attack movie What is ANGIOPLASTY and STENTING? - YouTube
Description
Causes
Treatment/Prevention

37. Stroke
Description
Causes
Treatment/Prevention

38. Leukemia
Description
Causes
Treatment/Prevention

39. Sickle Cell Anemia
Description
Causes
Treatment/Prevention

40. Iron-Deficiency Anemia
Description
Causes
Treatment/Prevention

41. Hemophilia
Description
Causes
Treatment/Prevention