What is the most important factor causing pulmonary artery constriction? What other factors are involved?

Q: Why is the pressure in the pulmonary circulation lowerthan in the systemic circulation?

A: Blood must always circulate to sustain life. It carries oxygen from the air we breathe to cells…

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: Using a flow diagram (arrows), describe the pathway of the pulmonary circulation. Indicate the…

A: The pulmonary circulation constitutes a closed circuit between the heart and lungs. The deoxygenated…

Q: Give two features that enable you to distinguish the epicardium from the endocardium of the…

A: The heart is a muscular organ responsible for pumping blood all over the body. The heart comprises…

Q: Why does subglottal pressure increase pulmonary pressure?

A: Subglottal pressure: It is the air pressure in the lungs that is generated during a speech or…

Q: Which structures compose the pulmonary circulation? Which compose the systemic circulation?

A: Pulmonary circulation mainly moves the blood between heart and lungs whereas systemic circulation…

Q: Do the pulmonary arteries carry oxygenated blood or deoxygenated blood? What features of the…

A: Human heart is the Center for regulating blood across the body. It is located within the thoracic…

Q: Define the terms pericardium and epicardium?

A: Human heart is located in the thoracic cavity between the lungs. It is a hollow, fibromuscular organ…

Q: What roles do the chordae tendineae and papillary muscles have in the normal function of the AV…

A: The heart is the muscular organs of the cardiovascular system.

Q: Differentiate between recruitment and distention in pulmonary arterial pressure changes?

A: The resistance offered against blood, as it flows from the pulmonary artery to the left atrium is…

Q: Discuss the mechanisms of controlling cardiovascular pressures

A: Cardiovascular system includes blood, blood vessels, and heart. The cardiovascular system maintains…

Q: State the exact location of pulmonary semilunar valve.

A: The pulmonary valve is semilunar valve of the heart. It opens in the ventricular systole when…

Q: What variable accounts for the fact that mean pulmonary arterialthe pressure is lower than mean…

A: In physiology, arterial pressure is defined as the in the large arteries pressure exerted by blood…

Q: Describe the Pulmonary circulation process?

A: Blood circulation refers to the movement of blood through the vessels of the body which distribute…

Q: atrium) aorta aortic semilunar valve left ventricle left atrium lung capillaries mitral valve…

A: Introduction:- Blood leaves the heart through the pulmonic valve, into the pulmonary artery, and to…

Q: vasoconstrictors?

A: The pressure of circulating blood against the walls of blood arteries is known as blood pressure.…

Q: State the location and function of the aortic and cartoid baroreceptors and the aortic and carotoid…

A: The body can counteract short term as well as long term changes in the blood pressure. Short term…

Q: What anatomical changes occur during Myocardial Infarction (MI), and what is/are the likely…

A: Myocardial infarction is also termed as a heart attack. The heart muscle gets damaged when there is…

Q: Why is the intrapleural pressure normally lower than intrapulmonary pressure? What is the function…

A: Intrapleural pressure is the pressure inside the pleural cavity.

Q: How can the Carotid Sinus cause Sudden Death?

A: The exterior and internal carotid arteries connect to produce the carotid sinus, which is a common…

Q: Severe hemorrhage increases peripheral vasoconstriction and heart rate. Why does it cause rapid…

A: When there is an imbalance between the demand and supply of oxygen to the body tissues as a result…

Q: Describe three main benefits of utilising this type of venous access device (CVAD)?

A: The venous access device (CVAD) also called as central venous catheters. It is a placement of the…

Q: Compare the structure of the tricuspid valve with that of the pulmonary valve.

A: Answer given below..

Q: What is the difference between the systole and diastole and their pressure?

A: The cardiac cycle involves events and patterns of contraction and relaxation of heart to complete…

Q: RN notes that the arterial waveform has changed, as seen below. What is causing this and how could…

A: The arterial waveform reflects the changes in pressure in the ventricles over time dP /dt , the…

Q: MAP of the pulmonary system is 21 mmHg, Left Atrial Pressure is 3mmHg, and Flow is 5625ml/min. What…

A:

Q: How does the Ventilation-Perfusion Ratio affect the End-Capillary Gases?

A: Introduction: The relationship between the amount of air that enters the alveoli, referred to known…

Q: What innervates the pericardium?

A: The heart is the organ that pumps blood everywhere. This helps in the change of oxygen and carbon…

Q: From what vessel does the brachiocephalic artery arise?  Follow its pathway, listing name changes…

A: Arteries are the blood vessels that carry blood away from the heart. Aorta is the principal artery…

Q: How does blood pressure in the pulmonary circulation compare to the pressure in the systemic…

A: The pulmonary circulation is a relatively low-pressure system as compared to systematic circulation…

Q: Which vessels is where gas exchange occurs

A: Air enters into the body through the nose or mouth. It moves to the pharynx and then passes into the…