Question

Define the terms.

. Provide as many definitions as you can in your own words without looking at the textbook or other reference book. Then check your definitions against the official definitions and supplement your list.

• Aorta
• Atrioventricular node
• Bundle of His
• Capillaries
• Cardiac muscle
• Coronary arteries
• Endocardium
• Epicardium
• Inferior vena cava
• Lumen

Answer 1

Aorta=it is the largest artery in the body which carry oxygenated blood and supply to various organs.

Bundle of His=bundle of his is a cardiac muscle fibers which helps to pass ele trical impulses to one chamber to another.

Capillaries=small blood vessesels which is connected to arteries and veins .

Cardiac muscles= muscles presents in the heart which leads for contraction and dilatation of heart.

Coronary arteries= coronary arteries are the main arteries which brings oxygenated blood to the heart for its function.

Endocardium= endocardium is present in the 4 chambers inner part.and it is a type of tissue which provides protection to heart valves and chambers of heart..

Epicardium=it is a layer which is connected closely to the mayocardium.

Inferior venacava=it is a major and large vein which brings   de oxygenated blood to the heart from lower extrimities.

Lumen=it is present in the tube like structures such as arteries which helps to flow blood out side of arteries