1. Human Circulatory System

2. Structure and Function
Lesson 1

3. Do Now
Hold one arm straight up in the air, keeping the other arm down at your side for 1 minute
Compare both your hands
What do you notice about the hand you held up compared to the one at your side?

4. Transport
Life function by which human beings absorb and distribute the materials necessary to maintain life.
“Closed system” with one muscular pump
Heart(4 chambers)
Network of blood vessels

5. Arteries Carry blood AWAY from the heart – to body tissues
Thick walled & elastic
contain cardiac muscle tissues
these muscles enable the artery to maintain blood flow via rhythmic contractions = pulse

6. Veins Carry blood TO the heart – away from body tissues
- thin walled and less elastic
- NO muscle tissues
- muscles surrounding the veins contract to squeeze blood through veins
- One way valves – prevent backflow within the vein
if the veins are defective the blood flows back and veins dilate (varicose veins)

7. Capillaries Connect arteries to veins smallest vessels with thin walls
only one cell thick
diffusion occurs through the walls of capillaries into cells
branch from the ends of small arteries and carry oxygenated blood to all tissues in the body

8. Types of Circulation Systemic ♥  aorta  to body systems  veins  ♥
Pulmonary ♥pulmonary artery  lungs  pulmonary vein ♥
Coronary – supply blood to the heart itself

9. Lymphatic System Carry lymph to and from body tissues
all cells are suspended in ICF = intracellular fluid
contain valves (similar to veins) to aid in movement
place where lymph vessels are enlarged and gathered in masses = lymph nodes at specific parts of the body
contain phagocytic white blood cells that attack and destroy bacteria in lymph

10. Do Now
Watch the Brain Pop video Circulation and complete the multiple choice worksheet
Circulation!

11. Homework
Circulatory System vocabulary definitions

12. The Heart
Lesson 2

13. Do Now
Make your best guesses on the “Graphs, Stats and Numbers” Worksheet

14. The Human Heart Size of your fist
Center of the chest – (slightly to the Left)
“pump” made of muscle = myocardium
membrane enclosing it = pericardium

15. 4 Chambers Atria = Right atrium/Left atrium (upper)
Ventricles = Right ventricle/Left ventricle
(lower)

16. Valves Tricuspid – RA & RV Mitral – LA & LV
** The heart is a double pump*

17. Flow of Blood
Veins  Superior and Inferior Vena Cava  Right Atrium * Tricuspid valve  Right Ventricle Lungs (to get oxygen) **via the pulmonary valve to the pulmonary artery
** In the lungs the blood passes through capillaries, where gas exchange occurs  by oxygenating blood and removing CO2 from the blood
blood then returns via the pulmonary vein  Left Atrium  Left Ventricle  Aorta ** via the aortic valve

19. Right side of the heart receives O2 deficient blood and transports it to the lungs
 picks up O2
* Left side of the heart receives O2 rich blood and transports it to the body

20. In class assignment
Watch the online simulation of the flow of blood through the heart
Heart cycle
“Label it” worksheet

21. Homework
Heart multiple choice worksheet
Heart cycle worksheet

22. Heartbeat
Lesson 3

23. Do Now
Vocabulary Worksheet

24. For each heartbeat: Systolic pressure is peak pressure
in the arteries, which occurs near
the beginning of the cardiac cycle
when the ventricles are contracting.
Diastolic pressure is minimum
pressure in the arteries, which occurs
near the end of the cardiac cycle
when the ventricles are filled with blood.

25. Heartbeat contractions = systole relaxation = diastole S 120
BP = = (normal BP) D

26. Blood Pressure
Force exerted by circulating blood on the walls of blood vessels
The pressure of the circulating blood decreases as blood moves through arteries, arterioles, capillaries and veins.

27. Heart valves open and close  heart sounds like “lub dub”
**Abnormal blood flow through the heart = murmur
Pacemaker – triggers heart beat
EKG (electrocardiogram) – measures voltages through the heart
 coronary arteries to heart muscle
heart sounds

28. Heartbeat or pulse is influenced by drugs, exercise and illness
Ex: high BP, low BP, physical activity, obesity, ephedrine, drugs
** Exercise increases the heart rate to increase blood flow to muscles and deliver more O2

29. Disorders of the Cardiovascular System
Atherosclerosis
Stroke
Heart Attack
Hypertension

30. In class assignment
The Heartbeat game!

31. Homework
Chapter 23 Study Guide Circulation
Case Study: Heart Attack

32. Blood
Lesson 4

33. Do Now
Blood cycle worksheet

34. Blood Liquid tissue 55% plasma = clear liquid 90% water
10% nutrients, salts, hormones, wastes and proteins
45% Cells = 3 types

35. Red blood Cells – RBC - very numerous - disc shaped - no nuclei
- contain hemoglobin – red pigment, carries O2
- live for 120 days – need to be made all the time
- requires Fe (iron) to make hemoglobin
*not enough Fe = Anemia (decreased RBC’s)
* Sickle cell anemia = genetic disease – abnormal hemoglobin causes cells to sickle

36. White Blood Cells – protect the body from disease = defenders
- fewer in # than rbc’s
- have a nucleus
- larger than rbc’s
- phagocytize bacteria
- made in bone marrow and lymph
* Leukemia – cancer caused by increased production

37. Lymphocytes – produce antibodies
- type of white blood cell
- produce antibodies specifically designed to recognize and attack particular types of proteins (antigens) that may enter the blood

38. Platelets – small, noncellular components of blood
** important to clotting
ICF – Intracellular fluid – rich in salts ICF drains from tissues within lymphatic vessels, where it is known as lymph

39. In class assignment Watch the Brain Pop video “Blood”
Complete the matching worksheet

40. Homework
Blood definitions and multiple choice worksheet

41. Blood Types
Lesson 5

42. Do Now
Around the world worksheet

43. Blood Groups ABO classification Blood Type Antigen Antibody A A Anti-B
B B Anti-A
AB A&B none
O None Anti-A/Anti-B
Rh factor=+ (85%) OR – (15%) is another antigen

44. Blood Transfusions Blood Type Donate to Receive from A A & AB A & O
B B & AB B & O
AB (universal recipient) AB A,B,O,AB
O (universal donor) A,B,AB,O O
Blood Transfusions
Blood Type Donate to Receive from
A A & AB A & O
B B & AB B & O
AB (universal recipient) AB A,B,O,AB
O (universal donor) A,B,AB,O O

46. In class assignment Brain Pop video “Blood Types”
Multiple Choice worksheet
“You’re My Type”

47. Homework Vocabulary worksheet
What’s your blood type? OR what is your parents blood type?

48. Heart Rate Lab
Lesson 6

49. In class assignment
Heart Rate Lab Activity

50. Homework
Complete the Heart Rate Lab