38. The onset of Ventricular systole is associated with: A. the closing of the aortic valve B. the ejection of blood from the ventricles C. the opening of the atrio-ventricular (AV) valves D. the first heart sound

Q: 70. Which of the following phases of the ventricular action potential most closely coincides with…

A: The electrocardiogram is a graphic representation of the electrical activity of the heart recorded…

Q: The vessels that carry oxygen to the myocardium are called __________.   A pulmonary arteries   B…

A: Blood is the body fluid that flows in tube-like structures known as vessels and functions in the…

Q: 53 Examination of a full-term male newborn shows muffled heart sounds on the left and the point of…

A: A Cardiac silhouette is the outline of the heart seen on frontal and lateral chest X ray images. It…

Q: The two factors that assist the relatively low venous pressures in propelling blood toward the heart…

A: The circulatory system in humans has the heart, blood vessels- arteries and veins, etc. mainly. The…

Q: The pulse pressure is a measure of a. the number of heartbeats per minute. b. the sum of the…

A: Blood pressure records two measurements: systolic pressure and diastolic pressure wherein systolic…

Q: 45. Which of the following is/are true concerning the opening and closing of thecardiac valves?   A.…

A: The valves of the heart maintain undirectional flow of the blood and prevent its regurgitation in…

Q: Sketch and discuss the most important waveforms associated to the cardiac cycle and what is the…

A: A sequence of alternating contraction and relaxation of the atria and ventricles in order to pump…

Q: 16. The onset of ventricular systole is characterized by the closing of the AVvalves and:   A. onset…

A: The cardiac cycle refers to the changes in the heart during the phase starting from one heartbeat to…

Q: 1 pc Which of the following best describes diastole? O The atria contract which force the…

A: Diastole :- In a cardiac cycle, a period when heart muscles attain relaxation which is accompanied…

Q: 3. Trace the pathway of the blood in the pulmonary circulation. Fill in the box with the appropriate…

A: Pulmonary circulation is the pathway that carries deoxygenated blood between the heart and the lungs…

Q: 6. The diagram shows stroke volume as a function of right atrial pressure. The solid curve shows…

A:

Q: To get from the right atrium to the right ventricle, blood flows througha. the pulmonary valve.b.…

A: To get from the right atrium to the right ventricle, blood flows through the right AV valve or…

Q: The atrioventricular valves open because ______.   A relaxation of the ventricles causes the…

A: Atrioventricular valves These are the valves which connect the atrium to the ventricles. There are…

Q: 1. Which phase of Ventricular Filling increases the volume of blood in the ventricles the most?…

A: The heart is a pump that transports blood through a network of arteries. Its function is to send…

Q: 8. The closure of the tricuspid valve separates which two events in the cyclic changes of the left…

A: A single cardiac cycle includes all the events associated with one heartbeat. Thus, a cardiac cycle…

Q: Standing for a prolonged period of time can cause ... a. Decline in venous return  b. A drop in…

A: Venous return is the flow of blood from peripheral regions to back to right atrium . Factors which…

Q: An increase in mean arterial pressure can result froma. an increase in peripheral resistance.b. an…

A: Mean arterial pressure is defined as the average arterial pressure in one cardiac cycle, which…

Q: 2. What type of blood vessel returns blood to the heart? O A. Artery B. Vein O c. Capillary O D.…

A: ANSWER;- B) Vein Explain;- Veins (in blue) are the blood that returns blood to the heart. Profound…

Q: 48) Pericardial arteries supply blood to the a) outer heart muscle b) tissue of the aorta c) tissue…

A: The heart is located on the slightly left side of the sternum in front of the lungs where it pumps…

Q: 3. (1) List the major blood vessels and their origins involved in coronary circulation. (ii) At what…

A: Coronary circulation is the movement of blood throughout the vessels that supply the heart muscle.…

Q: If an embolus formed in the left ventricle, it would be able to pass through: ___________________

A: An embolus is a clot which may be present in veins or arteries posing as blockage. Most emboli are…

Q: 16 A 62-year-old man comes to the emergency department because of chest pain. Cardiac…

A: The two main coronary arteries are the right coronary artery (RCA) and the left main coronary artery…

Q: 1- The left ventricular wall of the heart is thicker than the right wall in order to…

A: Introduction :- Near the heart base, the ventricular wall is thickest, and it thins out to 1-2 mm at…

Q: If the left side of the heart were failing, how would this change the pressure that the right side…

A: Ans-  If the left side of the heart were failing, it will become more difficult for the right…

Q: 111. A healthy 23-year-old woman engages in strenuous dynamic exercise for 30 minutes. Which of the…

A:

Q: Which of the following cardiac tissues has the most rapid conduction velocity? A)The AV node. B)…

A: Purkinje fibre situated in both ventricle myocardium

Q: Predict the pressure changes that occur in the aorta, the left ventricle,and the left atrium after…

A: The heart is a smooth muscle organ that plays a major role in the circulation of blood. Human heart…

Q: How would a stenotic bicuspid valve affect the movement of blood from the left atrium to the left…

A: The narrowing of the gap in the mitral valve, which lies between the left atrium and the left…

Q: 43. Right and Left Ventricular pressures differ during:   A. the entire cardiac cycle B. diastole C.…

A: The cardiac cycle is referred to as one heartbeat that consists of one cycle of contraction and…

Q: 1. Describe cardiac output, including the factors involved in its regulation.

A: Our hearts can also increase stroke volume by pumping more forcefully and increasing the amount of…

Q: 6. What is the purpose of the coronary artery? What results if there is blockage in this vessel?

A: Introduction :- The heart muscle is supplied with blood via coronary arteries. The heart muscle,…

Q: Match the following:   ?  Myocardium  ? Parietal Pericardium   ? Endocardium  ?    Visceral…

A: Step 1 The heart is a hollow, fibromuscular conical pyramidal mesodermal organ that lies obliquely…

Q: 40. The period of ejection:   A. begins with closure of the AV-valves and ends with opening of the…

A: The cardiac cycle is the process of contraction and relaxation of the heart. The primary function of…

Q: 3. All of the following are structures of the conduction system except a. TH bundle of His. b. The…

A:

Q: The heart’s internal pacemaker beats by: a. an internal implant that sends an electrical impulse…

A: The heart is a muscular organ in numerous animals, which siphons blood through the veins of the…

Q: 1- A. How is the blood in the pulmonary artery and pulmonary veins different from the blood in the…

A: The heart, capillaries, and blood are all part of the blood circulatory system, that ensures that…

Q: 27. A transient decrease in intrathoracic pressure increases pulmonary vascular capacitance and…

A: Question is related to medical surgical nursing Solution given below

Q: 27. All of the followings are incorrect about adult human heart, except ---------------------. A.…

A: Answer- Human heart is composed of 4 chambers out of which two upper chambers are left and right…

Q: The left ventricular wall of the heart is thicker than the right wall in order to ________.   A…

A: Heart is muscle which pumps blood to all parts of your body to provide it with the oxygen and…

Q: At what point is the pressure in the ventricles increasing most rapidly?   A when both sets of…

A: The measurement of the blood pressure in the ventricles of the heart is known as ventricular…

Q: d.T wave

A: Heart- It is the organ that pump blood through out the body is refers as the heart. it is fist…

Q: 22. Ventricular Contractility increases in response to circulating Epinephrine. What factor is…

A: The cardiac cycle involves the coordinated contraction and relaxation of the heart chambers. The…

Anatomical Position

Anatomical position refers to the position in which an individual faces forward with their upper limbs stretched to both sides with palms facing forward. The standard anatomical position of the body is used to reference other anatomical aspects of the body.