Coronary artery disease in the acute marginal branches would affect which part of the myocardium?

Q: What is the role of the coronary arteries?

A: The heart is an organ that can pump blood to the different parts of the body through different blood…

Q: Name the valve present in the opening of inferior cava.

A: Inferior vena cava is the largest vein in the human body that is responsible for carrying…

Q: Which chambers of the heart have the heaviest musculature?

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: Where is the right coronary artery located? What are its main branches, and what do they supply?

A: CORONARY ARTERY:                Coronary arteries depicts the blood vessels that surrounds and…

Q: if the impulse is coming inferiorly from the SA node then how do the ventricles contract inferior to…

A: Sino atrial (SA) node is a pacemaker in the heart responsible for generation of action potential.…

Q: Does conducting arteries possesses more elastic fiber in tunica externa? yes or no

A: A blood channel that carries blood away from the heart is known as an artery. The thick walls of all…

Q: What is the functional significance of the difference in thickness between the wall of the aorta and…

A: The aorta is the main artery which carries blood away from heart to the rest of  body.  The…

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: Define venous sinus

A: Sinuses are a connected network of hollow cavities present in the skull.

Q: Compare the structure of the left atrioventricular valve with that of the aortic valve.

A: Human heart has four chambers. It is a muscular organ whose shape is like a person’s closed fist The…

Q: Why would venous valves be unnecessary in the jugular veins of the neck?

A: Veins The veins carry oxygen depleted blood from different body parts to the heart. The veins are…

Q: Which vessels supply blood to the myocardium?

A: The heart of the human has four chambers. These four chambers are the Left and Right atrium, Left…

Q: Why less pressure is lost overcoming resistance between the arteries and the capillaries?

A: The oxygenated blood pumped by the left ventricle have a certain amount of pressure in it which…

Q: Look for the septal leaf of the tricuspid valve and just above its attachment,locate the…

A: The heart is a muscular organ situated on the left side of the chest. It is about the size of the…

Q: What is the term for the epithelium of the endocardium and epicardium

A: Epithelium is the major tissue out of four animal tissue.  It is thin, protective and continuous…

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: What anatomical feature prevents the electrical signal from traveling directly from atrial muscle to…

A: The heart is a muscular organ that is divided into the left and right side to prevent the mixing of…

Q: Identify the principal veins that drain the upper limbs.

A: Forearm Cephalic vein. Basilic vein. Median forearm vein. Arm Brachial vein. Cephalic vein.…

Q: Which vein returns blood from the abdominopelvic viscera to the heart?

A: The cardiovascular system is composed of the heart, blood, and blood vessels. The heart pumps blood…

Q: Where do most veins inferior to the diaphragm drain?

A: Most Veins inferior to the diaphragm drain into Inferior Vena Cava .

Q: Which side of the heart is considered the pulmonary pump? What is the destination of blood from the…

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

Q: Why is there a pause after the atrial contraction andbefore the ventricular contraction?

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

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: why a leaking heart valve may cause heart damage over time?

A: Leaky heart valve can affect any of the four heart valves: 1)Aortic valve ( left ventricle and…

Q: Where is the mitral valve located? Describe the directionand type of blood (oxygenated or…

A: The valve of the heart is composed of the endocardium and connective tissue. Valve are structures…

Q: What clinical symptoms would you expect from a blood clot midway along the right posterior…

A: The posterior communicating artery(PCOM) is divided into right and left arteries. This artery mainly…

Q: Describe the components of the left atrioventricular valve.

A: The heart has four chambers: right atrium, right ventricle, left atrium, and left ventricle. The…

Q: which has larger lumen (opening for blood flow):an artery, or a vein?

A: There are three blood vessels in our body. Arteries- They carry oxygenated blood away from the body.…

Q: What is meant by the term venous return?

A: The flow of blood back to the heart is known as Venous return. The blood is received by the right…

Q: How many pulmonary arteries and veins attached to the heart? What is the function of the pulmonary…

A: Pulmonary circulation is the movement of blood from the heart to the lungs, and then from the lungs…

Q: Why are the left and right coronary vessels considered the major coronary vessels?

A: The coronary vessels are the blood vessels which are responsible for supplying blood to the heart.

Q: How does the blood in the pulmocutaneous arch differ from that in the higher two aortic arches?

A: The circulatory system of amphibians includes pulmocutaneous circulation. It is in charge of…

Q: Is there similar pattern between the carotid and iliac arteries?

A: Yes, carotid and iliac arteries has similarities in their pattern both are the arteries which supply…

Q: Name the structures that surround the Angio: ovule, as indicated by the pointers.

A: Stamens are male sex organs found in angiosperms. The anther is located at the end of the stamen.…

Q: State main function of coronary artery.

A: Blood vessels are any of the vessels in the cardiovascular system of the human or animal body. It…

Q: Describe the function of the areas of the heart usuallysupplied by the left coronary artery.

A: Like any other muscles heart muscle needs its own supply of blood because it needs oxygen and other…

Q: What is venous heart in Scoliodon?

A: Scoliodon belongs to a genus of sharks of family Carcharinidae. It has elongated and spindle shaped…

Q: What would be the path of blood flow through the heart if the foramen ovale did not close shortly…

A: The foramen ovale is a tiny hole in the septum, the wall that separates the heart's two upper…

Q: What is the proximal saphenous vein sutured to during CABG?

A: Coronary artery bypass grafting (CABG) is a  surgery that helps in improving blood flow to the…

Q: What is the normal function of the aortic and carotid sinus baroreceptors?

A: Receptors are chemical structures made up of proteins that collect and send signals that can be…

Q: When blood is flowing through a vena cava, which main blood vessel will it flow through next?

A: Heart is the most important organ of circulatory system. In humans, heart has two atria and two…

Q: Where does anatomic shunt exist?

A: Introduction: The fetal circulation starts when umbilical vein carrying oxygenated blood flow…

Q: What is the function of Coronary arteries ?

A: Coronary arteries are a type of artery which spreads around the entire heart like a network of blood…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.