When the ventricles contract, all of the following occur excepta. closing of the AV valves.b. blood ejecting into the pulmonary trunk and aorta.c. closing of the semilunar valves.d. opening of the semilunar valves.

Q: When ventricular walls relax: a. Mitral valve opens & tricuspid valve closes b. Tricuspid valve…

A: Mitral valve is also called the bicuspid valve  and it connect left Atrium to the left ventricle.…

Q: Afterload is Select one: a. the amount cardiac output must increase during exercise. b. the…

A: The objective of the question is to identify the correct definition of the term 'afterload' in the…

Q: The AV node delay: a. allows the atria and ventricles to depolarize and contract as a unit. b.…

A: The human heart consists of the left and right atria and the left and right ventricles. The heart…

Q: Match the following:   ? Prevents backflow into the left ventricle   ?  Prevents backflow into the…

A: Valves are flap like structures which are present in heart and helps in movement of blood in one…

Q: A force that attracts fluid into the capillary from the tissue spaces is Select one: a. venous…

A: The question is asking about the force that pulls fluid back into the capillaries from the…

Q: The major source of compliance for maintaining blood pressure during the diastolic interval flow…

A: When heart pushes blood around our body during systole pressure on the vessels increases which is…

Q: an increase of which of the following will increase mean artrial pressure a. venous return b.…

A: The heart's role in any organism is to keep "blood" flowing continuously throughout the body. Blood…

Q: Which of the following best describes an artery? Select one: a. thin-walled, and supplied with…

A: Ans- Arteries are the important part of cardiovascular system in our body that carries 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: Left ventricular output is generally the same as right ventricular output. If right ventricular…

A: On an average, 70 ml of blood is pumped every beat (stroke volume) and about 5000 ml every minute…

Q: Cardiac contractility is enhanced by: A. Vagal stimulation. OB. Stimulation of Muscarinic receptors.…

A: Cardiac contractility is the heart's ability to pump blood around the body with force during systole…

Q: The delivery of blood by the left ventricle into the sorta is intermittent, whereas blood flow in…

A: Peripheral circulation refers to blood flow in smaller blood vessels such as arterioles and…

Q: The largest cross-sectional area in the total circulation and lowest blood flow velocity is found…

A: Blood vessels are the structures that conduct blood to different parts of the body. The systemic…

Q: Identify the parts of the conducting system of theheart. Explain how the conducting system…

A: The circulatory system also called the cardiovascular system  is the organ system that allows blood…

Q: Visually (or use diagrams) to indicate which vessels connect to which chambers: Pulmonary artery to…

A: According to our guideline we can answer only first three subparts. So, upload the last question…

Q: a. Ventricular diastole b. Throughout the cardiac cycle c. Between cardiac cycles  d. Ventricular…

A: Heart It is the main component of the circulatory system. It pumps the blood to various parts of the…

Q: Which of the following is true about the pacemaker potential in the heart? a. Decreased K+ efflux…

A: The pacemaker potential, also known as the prepotential, is the slow, positive increase in voltage…

Q: What valve is located between the left atrium and left ventricle? a-Tricuspid valve b-Bicuspid valve…

A: Heart is a muscular organ. Heart pumps blood, it has four chambers having two atrium and two…

Q: entricular contraction begins at the Select one: a. AV bundle. b. apex of the heart. c. top of the…

A: The objective of the question is to identify the location where the contraction of the ventricles,…

Q: Which of the following decreases perfusion of a tissue? a. decreased total blood flow b. vasodilator…

A: Perfusion is the path of sap through in the circulatory system or lymphatic system to an organ or a…

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: If the pressure in the ventricles is higher than the pressure in the atria, but lower than the…

A: Heart valves open and close in response to pressure changes inside the heart chambers. the fluid…

Q: Discuss mitral valve stenosis in terms of changes to its structure and function and explain how this…

A: Mitral valve stenosis is a condition in which the mitral valve, which separates the left atrium and…

Q: which of the following factors will increase the cardiac output? a. decreased heart rateb. increased…

A: The objective of the question is to identify the factors that can increase the cardiac output.…

Q: Muscle impulses are spread rapidly between cardiac musclecells bya. sarcomeres.b. intercalated…

A: The heart is a muscular organ , located just behind and slightly left of the sternum. The heart is…

Q: Which of the following is/are involved in regulating blood pressure? a. heart b. baroreceptors c.…

A: Blood Pressure can be defined as the pressure exerted by the blood flowing in the blood vessels on…

Q: Which type of vessel has a large number of smooth muscle celllayers in its tunica media as well as…

A: In anatomical terminology, blood vessels represent one of the significant components of the human…

Q: The maximum amount of blood within the left ventricle just before the start of isovolumic…

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

Q: Stroke volume is thea. amount of blood pumped by the heart per minute.b. difference between…

A: End-diastolic volume refers to the quantity of blood in the left or right ventricle at the end of…

Q: Cardiac output measures blood ejected from a. both atria each minute b. each ventricle each minute…

A: Cardiac output refers to the volume of blood that is pumped by the heart per unit of time, usually…

Q: Which of the following characteristics is unique to capillaries and not to other blood vessels?…

A: The blood vascular system has various components that help in the smooth circulation throughout the…

Q: The only area of the heart that receives innervation from the brain is called the: A.…

A: Cranial nerves are the part of the nervous system that assists in a variety of functions. These…

Q: The thickest part of the heart wall is thea. pericardium.b. epicardium.c. myocardium.d. endocardium.

A: The body comprises a total of eleven organ systems, and each of them is specialized to perform a…

Q: Describe what happens with the blood flow if each valve stop working. For example, first describe…

A: The circulatory system of the human body circulates the blood across the body. The heart is the…

Q: Increased parasympathetic stimulation of the hearta. increases the force of ventricular…

A: The parasympathetic neural system is associated with the activities concerned with normal body…

Q: During the period of isovolumic contraction: A. the AV-valves are open and the aortic & pulmonary…

A:

Q: A. begins with closure of the AV-valves and ends with opening of the valves B. begins with opening…

A: There are two types of atrioventricular valves. The mitral and the tricuspid valves, also known as…

Q: How would the left ventricle of a patient who had had high blood pressure for many years differ from…

A: Answer: Introduction: Left ventricular hypertrophy is expansion and thickening means hypertrophy of…