Which of the following statements about the heart is TRUE?   A) The sinoatrial node generates the fastest action potentials in the heart B) The parasympathetic branch of the nervous system decreases heart rate C) The sinoatrial node passes the action potentials to the AV node D) Both B & C E) All of the above

Q: Which of the following is correct regarding the flow of blood in reference to the left side of the…

A: Heart is the main pumping organ of the body. It is divided into four chambers two upper Chambers are…

Q: 8) Which is correct with an increase in cardiac output? A) decrease in stroke volume B) increase in…

A: In cardiac physiology, Cardiac output refers to the amount of blood pumped out of each ventricle per…

Q: 117. A 45-year-old man with severe tricuspid valve prolapse undergoes a valve replacement operation.…

A:

Q: If blood pressure was to drop, how is the signal transmitted to the central nervous system?   a)…

A: Introduction Blood pressure is the pressure of blood pushing against the walls of our arteries. Our…

Q: 113. During workup for a proposed vascular procedure, a 45-year-old woman undergoes contrast…

A: Angiogram: An angiogram is a medical imaging technique used to visualize the inside of blood vessels…

Q: What is the Frank–Starling law of the heart? What is its significance?

A: In the cardiovascular system, circulated blood flow from the left ventricle is called stroke volume…

Q: A

A: In the given heart diagram

Q: if a drug blocked the receptor of epinephrine/nonrepinepherine on the heart, which would occur?

A: There is a lot of overlap between epinephrine and norepinephrine. Catecholamines are a tiny but…

Q: Briefly define 1) Starling’s Law of the heart, 2) the basic cellular mechanism thought to mediate…

A: Introduction: When at rest, the heart pumps between 4 and 6 liters of blood every minute. During…

Q: Which of the following ions are involved in cardiac conduction?  1) Calcium  2) Magnesium…

A: The ions involved in cardiac conduction are  Sodium, Calcium and Potassium. Cardiac conduction can…

Q: the difference between the systolic and diastolic pressures is called the ....... pressure

A: Answer: Systole is the closure of tricuspid valve and concludes with the aortic valve as it…

Q: If an individual has a heart rate of 80 bpm; end diastolic volume of 140 ml and end systolic volume…

A: The functions of heart can be assessed by measuring and calculating certain parameters and comparing…

Q: difference between veins and arteries

A: Every tissues and cells in our body requires oxygen for carrying out proper metabolic process.…

Q: In which of the following organs would you find oxygen levels causing vasoconstriction? A) lung b)…

A: Vasoconstriction consists of the word part "vaso" which refers to blood vessels, and the word part…

Q: This is the sound a heart makes when beating: A) lub-dubB) swish-fashC) ding-dong

A: The heart is a muscular organ which pumps blood through the blood vessels of the circulatory system.…

Q: 7) which of the following has the thickest wall? A) left ventricle B) right ventricle C) left atrium…

A: Please note that the answer is provided for MCQ # 7 and # 10. As all of these are separate…

Q: Pick all the correct answers for the normal physiological compensatory responses in untreated…

A: Congestive heart failure may occur when the heart is unable to pump the blood, the way it should.…

Q: What does the circled structure do?

A: Heart Mesodermally derived organ, is situated in the thoracic cavity between the lungs, slightly…

Q: What does the circled structure do? A) signal SA node contraction B) serve as the hearts pacemaker…

A: Human heart is myogenic that means it can generates it's own impulse for the contraction. The…

Q: 8. After passing through the aortic semilunar valve, a red blood cell accidentally flows backwards…

A: The aortic semilunar valve is the valve that is present between the left ventricle and the aorta.…

Q: 5) How does norepinephrine effect the heart? A) increases heart contractility B) lowers heart rate…

A: Heart rate directly effects the blood pressure. Change in the heart rate will responsible for…

Q: Why do cardiac enzymes rise after an acute myocardial infarction? a) Cardiac enzymes leak from the…

A: Introduction  The organ that pumps blood throughout your body is the heart, which is about the size…

Q: Hemorrhage with a large loss of blood causes increase in blood pressure decrease in blood pressure…

A: Introduction  Blood is lost from a ruptured blood artery during a hemorrhage. Blood loss can be…

Q: W 8 Read aloud Section to li +880 ac Ask Copilot I A) Coarctation of the aorta B) Occlusion of the…

A: The objective of the question is to identify the most likely cardiac condition in a 4-year-old boy…

Q: Which chamber has higher pressure during the following phases of the cardiac cycle? a) ventricular…

A: Introduction: The cardiac cycle describes the human heart's activity from the start of one heartbeat…

Q: Which structure is highlighted in blue and indicated by the yellow arrow in this image? A) left…

A: Thorax is a chest located between the neck and abdomen. It is formed by bones of the sternum, ribs,…

Q: Which of the following is NOT a region of the aorta? A) ascending B) arch C) thoracic D) pelvic

A: Heart is chief pumping structure and vital organ of circulatory system that aids in sending oxygen…