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Did you know? At rest, 2 ounces of blood is circulated with each heart beat. 2.02 Understand the functions and disorders of the circulatory system1.

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Presentation on theme: "Did you know? At rest, 2 ounces of blood is circulated with each heart beat. 2.02 Understand the functions and disorders of the circulatory system1."— Presentation transcript:

1 Did you know? At rest, 2 ounces of blood is circulated with each heart beat Understand the functions and disorders of the circulatory system1

2 2 The function of the heart and blood vessels that supplies O2 and nutrients to the entire body is known as— Systemic Circulation The function of the heart that pumps blood from the heart to the lungs and back is known as- Cardiopulmonary Circulation

3 What do pumps do? How does this relate to heart function? 2.02 Understand the functions and disorders of the circulatory system3

4 4 Lubb=Tri cuspid and Bicuspid Valves closing. Dupp=Se milunar Valves closing

5  Blood pressure is the surge of blood when heart pumps creates pressure against the walls of the arteries  SYSTOLIC PRESSURE  Measured during the contraction phase  DIASTOLIC PRESSURE  Measured when the ventricles are relaxed What is the normal range of blood pressure for an adult? 2.02 Understand the functions and disorders of the circulatory system5 120/ 80

6 What makes the pump work? It’s electric! Explain the electrical activity of the heart Understand the functions and disorders of the circulatory system6

7 7 Discuss the function of the heart’s conduction system.

8  EKG or ECG  SYSTOLE = contraction phase  DIASTOLE = relaxation phase Baseline of an EKG is a flat line: P = Atrial contraction QRS = Ventricular contraction T = Ventricular relaxation 2.02 Understand the functions and disorders of the circulatory system8

9 What makes the pump work? It’s electric! 2.02 Understand the functions and disorders of the circulatory system9

10 Right side Superior vena cava Inferior vena cava Right atrium Tricuspid valve Right Ventricle Pulmonary valve Pulmonary artery Lungs CO2 and O2 exchange Left Side Pulmonary vein Left atrium Bicuspid valve Left ventricle Aortic valve Aorta Body 2.02 Understand the functions and disorders of the circulatory system10 (Schematic of systemic circulation)

11  Discuss cardiopulmonary circulation  Compare Systemic Circulation To Cardiopulmonary Circulation 2.02 Understand the functions and disorders of the circulatory system11

12  ARTERIES  What are the functions of arteries?  What are the characteristics of arteries?  Which direction do arteries flow? 2.02 Understand the functions and disorders of the circulatory system12

13  VEINS  What is the function of veins?  What are the characteristics of veins?  Which direction do veins flow?  Compare arterial and venous blood Understand the functions and disorders of the circulatory system13

14 2.02 Understand the functions and disorders of the circulatory system14

15 2.02 Understand the functions and disorders of the circulatory system15 Capillaries What is the function of capillaries? What happens if this action is obstructed?

16 Ballooning out of an artery accompanied by a thinning Arterial wall, caused by a weakening of the blood vessel (almost like having a bubble on a tire). It pulsates with each heart beat. Sxs may include pain and pressure or non at all. If diagnosed, procedures are done to prevent aneurysm from bursting Understand the functions and disorders of the circulatory system16

17 Angina pectoris Indicates an underlying problem with coronary circulation. Usually radiates from left arm. Women can have hot or Burning sensations instead of typical chest pain. Tx = Nitroglycerin to dilate coronary arteries and increase O2 supply Understand the functions and disorders of the circulatory system17

18  Arrhythmia  Is any change from normal heart rate or rhythm  BRADYCARDIA  Slow heart rate (<60 beats per minute)  TACHYCARDIA  Rapid heart rate (>100 beats per minute) 2.02 Understand the functions and disorders of the circulatory system18

19  Arteriosclerosis-disease that  occurs when arterial walls thicken  because of a loss of elasticity  due to the aging process.  Causes a narrowing of the arteries  that can impair circulation Understand the functions and disorders of the circulatory system19

20  Atherosclerosis= Disease when  Deposits of fatty substances  (as is caused by High levels of  Blood Cholesterol), that form  along the walls of arteries.  can cause heart attack, stroke,  and/or impaired circulatoin  in limbs Understand the functions and disorders of the circulatory system20

21  CAD-narrowing of arteries that supply  O2 to heart muscle.  Usually due to Atherosclerosis  Angina Pectoris is main sx  Can lead to Myocardial Infarction 2.02 Understand the functions and disorders of the circulatory system21

22  Myocardial infarction 2.02 Understand the functions and disorders of the circulatory system22 https://www.youtube.com/watc h?v=t7wmPWTnDbE

23  Hypertension  High Blood Pressure (140+/90+)  1 in 5 Americans has HTN and risks are greater in African Americans and post menapausal women.  Risk Factors: stress, smoking, overweight, high fat diets, family hx of HTN  Meds to decrease BP but often stops taking due to costs and side effects.  It is called the “silent killer” because often no sxs seen.  Can lead to MI, Stroke, Kidney Failure 2.02 Understand the functions and disorders of the circulatory system23

24 Occurs when ventricles of heart are unable to contract effectively and blood pools in heart, causing a backup of blood and fluid all over body. Ascites, Edema, lung congestion 2.02 Understand the functions and disorders of the circulatory system24

25  Murmurs 2.02 Understand the functions and disorders of the circulatory system25

26  Peripheral vascular disease 2.02 Understand the functions and disorders of the circulatory system26

27  Pulmonary edema 2.02 Understand the functions and disorders of the circulatory system27 Pulmonary edema is fluid buildup in the lung. It's usually due to mitral stenosis or left ventricular failure. Symptoms of pulmonary edema include difficulty breathing, coughing up blood-tinged sputum, excessive sweating, anxiety and pale skin.

28  Transient ischemic attack 2.02 Understand the functions and disorders of the circulatory system28

29 Swollen veins that result from slowing of venous blood flow back to the heart. Risk Factors: Family Hx, Standing long prds, pregnancy, age Prevention – Wear sunscreen – Elevate legs when resting – Wear elastic support stockings – Eating fiber diets – Exercise – Weight control 2.02 Understand the functions and disorders of the circulatory system29

30 2.02 Understand the functions and disorders of the circulatory system30 Leading Causes of Death: The Impact of Circulatory Disorders

31  The circulatory system plays a vital role in homeostasis  Absorption and transport of nutrients to cells, tissues, organs, and systems 2.02 Understand the functions and disorders of the circulatory system31


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