Properties of Cardiac Muscle
... Frank Starling Law of the Heart • This law states that with in limits the force of ventricular contraction is directly proportional to the end-diastolic length of the cardiac muscle fibers which inturn is closely related to ...
... Frank Starling Law of the Heart • This law states that with in limits the force of ventricular contraction is directly proportional to the end-diastolic length of the cardiac muscle fibers which inturn is closely related to ...
Primary FRCA MCQ/SBA Revision Day 23rd
... d) Can increase the heart rate via the Bainbridge reflex e) Can decrease the heart rate via the baroreceptor reflex 4) In diastole: a) Myocardial relaxation is metabolically active b) Hypercalcaemia causes positive lusitropy c) Left atrial contraction occurs just before right atrial contraction d) T ...
... d) Can increase the heart rate via the Bainbridge reflex e) Can decrease the heart rate via the baroreceptor reflex 4) In diastole: a) Myocardial relaxation is metabolically active b) Hypercalcaemia causes positive lusitropy c) Left atrial contraction occurs just before right atrial contraction d) T ...
Models of the Heart - the science teacher
... Label each diagram of the heart How do the models differ? How are the models similar? Which model would be best for a heart surgeon? Explain your reasoning. Which model would you use to explain to a patient where the coronary artery is located? Explain your reasoning. 6. Which model is most correct? ...
... Label each diagram of the heart How do the models differ? How are the models similar? Which model would be best for a heart surgeon? Explain your reasoning. Which model would you use to explain to a patient where the coronary artery is located? Explain your reasoning. 6. Which model is most correct? ...
Anatomy and Physiology - Killingly Public Schools
... veins continuous at base • Surrounded by pericardium ...
... veins continuous at base • Surrounded by pericardium ...
Endocrine_ Blood and Heart Test Review
... 2. Why is adenylate cyclase called the “second messenger” in amino acid-based hormone reception? 3. What are the three stimuli that can cause hormone synthesis/release/retention? 4. What are the only two hormones released from the posterior pituitary gland? Where are they made 5. Why are there two p ...
... 2. Why is adenylate cyclase called the “second messenger” in amino acid-based hormone reception? 3. What are the three stimuli that can cause hormone synthesis/release/retention? 4. What are the only two hormones released from the posterior pituitary gland? Where are they made 5. Why are there two p ...
Simulating Initiation and Termination of Reentry in
... – Bradycardia - less than 60 beats per min. – Tachycardia - pace of the heart is faster than the regulatory signal from the sinus node (over 100 beats per min). • Rapid heart beating in the ventricles can be life-threatening. (ex. Ventricular fibrillation heart can’t pump any blood) Currently, over ...
... – Bradycardia - less than 60 beats per min. – Tachycardia - pace of the heart is faster than the regulatory signal from the sinus node (over 100 beats per min). • Rapid heart beating in the ventricles can be life-threatening. (ex. Ventricular fibrillation heart can’t pump any blood) Currently, over ...
SESSION 10 - Middle Mediastinum, Pericardium, Heart And Great
... 26. What is the name of the band of tissue arising from the right branch of the Bundle of His that supplies the anterior papillary muscle in the right ventricle? ...
... 26. What is the name of the band of tissue arising from the right branch of the Bundle of His that supplies the anterior papillary muscle in the right ventricle? ...
Chapter 9 – The Cardiovascular System Test
... 13. With a myocardial infarction, muscle tissue dies, but it can grow back. a. true b. false 14. With heart murmurs, there are unusual sounds, most often because of heart valve problems. a. true ...
... 13. With a myocardial infarction, muscle tissue dies, but it can grow back. a. true b. false 14. With heart murmurs, there are unusual sounds, most often because of heart valve problems. a. true ...
2circulatoryHeart
... (lubb) and blood is pushed through the semilunar valves, as semilunar valves close you get the dubb • (if valves don’t close properly, esp. the bicuspid (left), you get a murmur (soft gurgling as blood comes back to the atrium from the ventricle ...
... (lubb) and blood is pushed through the semilunar valves, as semilunar valves close you get the dubb • (if valves don’t close properly, esp. the bicuspid (left), you get a murmur (soft gurgling as blood comes back to the atrium from the ventricle ...
seven square academy - AKSHARA INTERNATIONAL SCHOOL
... 5. Which of the following is not an organ of excretory system? a) liver c)heart ...
... 5. Which of the following is not an organ of excretory system? a) liver c)heart ...
Cardiovascular System
... Refractory period prevents tetany Energy – ATP – aerobic metabolism – Coronary circulation providing O2 ...
... Refractory period prevents tetany Energy – ATP – aerobic metabolism – Coronary circulation providing O2 ...
Slide 1 - AccessMedicine
... with normal cardiac performance, there is a steep and positive relationship between increased cardiac filling pressures (as estimated from the left ventricular end-diastolic or pulmonary capillary wedge pressure) and increased stroke volume or cardiac output (top curve). By comparison, during progre ...
... with normal cardiac performance, there is a steep and positive relationship between increased cardiac filling pressures (as estimated from the left ventricular end-diastolic or pulmonary capillary wedge pressure) and increased stroke volume or cardiac output (top curve). By comparison, during progre ...
Unit 6- p3 heart
... ● 2/3 left of midline ● below 2nd rib and rests on diaphragm *Location allows for CPR Heart Covering: the heart is enclosed in a ______________________________________________; ...
... ● 2/3 left of midline ● below 2nd rib and rests on diaphragm *Location allows for CPR Heart Covering: the heart is enclosed in a ______________________________________________; ...
12Review Ch12 14 09answers
... 14. The arteries are the vessels with the thick muscular walls and the veins contain arm-like valves 15. The number 120/80, represents a person’s blood pressure while resting. 16. The top number in the question above (120) represents the systolic pressure, while the bottom number represents the dias ...
... 14. The arteries are the vessels with the thick muscular walls and the veins contain arm-like valves 15. The number 120/80, represents a person’s blood pressure while resting. 16. The top number in the question above (120) represents the systolic pressure, while the bottom number represents the dias ...
right Bundle Branch
... The Sinu-atrial (SA) Node in the wall of the right atrium near the upper end of the sulcus terminalis and extending over the front of the opening of the superior vena cava. The SA Node is the "pacemaker" of the heart because it initiates cardiac muscle contraction and determines the heart rate. It i ...
... The Sinu-atrial (SA) Node in the wall of the right atrium near the upper end of the sulcus terminalis and extending over the front of the opening of the superior vena cava. The SA Node is the "pacemaker" of the heart because it initiates cardiac muscle contraction and determines the heart rate. It i ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.