Presentation is loading. Please wait.

Presentation is loading. Please wait.

Functions of the heart 1. Pump 2. Transportation

Similar presentations


Presentation on theme: "Functions of the heart 1. Pump 2. Transportation"— Presentation transcript:

1 Functions of the heart 1. Pump 2. Transportation
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 system

2 Systemic Circulation & Cardiopulmonary Circulation
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 2.02 Understand the functions and disorders of the circulatory system

3 Functions of the heart It’s a PUMP
What do pumps do? How does this relate to heart function? 2.02 Understand the functions and disorders of the circulatory system

4 Hear the beat! What makes the lubb dupp sound?
Lubb=Tricuspid and Bicuspid Valves closing. Dupp=Semilunar Valves closing 2.02 Understand the functions and disorders of the circulatory system

5 Blood Pressure FYI What is the normal range of
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? 120/ 80 2.02 Understand the functions and disorders of the circulatory system

6 Functions of the heart It’s a PUMP
What makes the pump work? It’s electric! Explain the electrical activity of the heart. 2.02 Understand the functions and disorders of the circulatory system

7 Discuss the function of the heart’s conduction system.
It’s electric! Discuss the function of the heart’s conduction system. 2.02 Understand the functions and disorders of the circulatory system

8 2.02 Understand the functions and disorders of the circulatory system
Electrocardiogram 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 system

9 Functions of the heart It’s a PUMP
What makes the pump work? It’s electric! 2.02 Understand the functions and disorders of the circulatory system

10 The pathway of a drop of blood thru heart, lungs, body and back
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 (Schematic of systemic circulation) 2.02 Understand the functions and disorders of the circulatory system

11 The transportation process
Discuss cardiopulmonary circulation Compare Systemic Circulation To Cardiopulmonary Circulation 2.02 Understand the functions and disorders of the circulatory system

12 Vessels of the circulatory system
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 system

13 Vessels of the circulatory system
VEINS What is the function of veins? What are the characteristics of veins? Which direction do veins flow? Compare arterial and venous blood. 2.02 Understand the functions and disorders of the circulatory system

14 Vessels of the circulatory system
Identify the major arteries. Identify the major veins. 2.02 Understand the functions and disorders of the circulatory system

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

16 Circulatory disorders-Aneurysm
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. 2.02 Understand the functions and disorders of the circulatory system

17 Circulatory disorders
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. 2.02 Understand the functions and disorders of the circulatory system

18 Circulatory disorders
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) What is the normal range for pulse? 60-90 bpm 2.02 Understand the functions and disorders of the circulatory system

19 Circulatory disorders-Arteriosclerosis
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. 2.02 Understand the functions and disorders of the circulatory system

20 Circulatory disorders-Atherosclerosis
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. What is the difference between arteriosclerosis and atherosclerosis? 2.02 Understand the functions and disorders of the circulatory system

21 Circulatory disorders-Coronary Artery Disease
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 system

22 Circulatory disorders
Myocardial infarction https://www.youtube.com/watch?v=t7wmPWTnDbE 2.02 Understand the functions and disorders of the circulatory system

23 Circulatory disorders
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 system

24 Circulatory disorderse-Heart Failure
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 system

25 Circulatory disorders
Murmurs What is the most common instrument used to detect murmurs? 2.02 Understand the functions and disorders of the circulatory system

26 Circulatory disorders
Peripheral vascular disease How can PVD be prevented? 2.02 Understand the functions and disorders of the circulatory system

27 Circulatory disorders
Pulmonary edema 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. 2.02 Understand the functions and disorders of the circulatory system

28 Circulatory disorders
Transient ischemic attack 2.02 Understand the functions and disorders of the circulatory system

29 Circulatory disorders-Varicose Veins
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 system

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

31 Relevance of nutrients to the blood and circulatory system
The circulatory system plays a vital role in homeostasis Absorption and transport of nutrients to cells, tissues, organs, and systems Did you know??? Vitamin K- prevents hemorrhage Vitamin B12- prevents anemia Vitamin E- prevents hemolysis 2.02 Understand the functions and disorders of the circulatory system


Download ppt "Functions of the heart 1. Pump 2. Transportation"

Similar presentations


Ads by Google