Cardiovascular System Histology (Part 1)

<p>Simple squamous epithelium and supporting connective tissue (D)</p> Signup and view all the answers

<p>To house branches of the heart’s impulse-conducting system (B)</p> Signup and view all the answers

<p>It corresponds to the parietal layer of the pericardium (A)</p> Signup and view all the answers

<p>Right ventricle (D)</p> Signup and view all the answers

<p>Cardiac muscle (C)</p> Signup and view all the answers

<p>It cushions underlying structures and reduces friction. (D)</p> Signup and view all the answers

<p>Dense fibrous connective tissue of the cardiac skeleton. (A)</p> Signup and view all the answers

<p>Anchoring and supporting heart valves. (A)</p> Signup and view all the answers

<p>To generate and propagate electrical impulses for heart contractions. (D)</p> Signup and view all the answers

<p>Endothelial lining, smooth muscle, and connective tissue. (A)</p> Signup and view all the answers

<p>In the direction of blood flow. (D)</p> Signup and view all the answers

<p>Smaller size and fewer myofibrils than typical cardiac muscle cells. (C)</p> Signup and view all the answers

<p>Conducting impulses from the atria to the ventricles. (A)</p> Signup and view all the answers

The circulatory system carries blood cells and nutrients to all body tissues. This system includes both the blood and lymphatic vascular systems, with a total vessel length estimated between 100,000 and 150,000 kilometers in adults.

The cardiovascular system is responsible for pumping and circulating blood throughout the body. It includes the heart, arteries, capillaries, and veins.

The heart is a muscular organ that rhythmically contracts to pump blood through the circulatory system. It has four chambers: right and left ventricles and right and left atria.

The right ventricle pumps blood to the lungs for oxygenation, while the left ventricle pumps oxygenated blood to the rest of the body.

The right atrium receives deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs.

The endocardium is the innermost layer of the heart wall, composed of endothelium, smooth muscle, and connective tissue. It helps with blood flow and forms part of the heart's electrical conduction system.

The myocardium is the thickest layer of the heart wall, primarily composed of cardiac muscle. It contracts to pump blood, and its thickness varies depending on the chamber's function.

The epicardium is the outermost layer of the heart wall, composed of mesothelium and connective tissue. It forms the visceral pericardium, a protective membrane surrounding the heart.

A specialized type of connective tissue found in the heart, providing structural support, anchoring valves, and promoting coordinated contractions.

The inner layer of the heart wall, composed of specialized muscle cells that conduct electrical impulses to coordinate contractions.

A small cluster of specialized cardiac muscle cells in the right atrium, responsible for generating electrical impulses that initiate heartbeats.

A specialized group of cardiac muscle cells in the right atrium that delays impulses from the SA node, ensuring proper contraction sequence.

A bundle of specialized muscle fibers that transmits electrical signals from the AV node to the ventricles.

A network of specialized muscle fibers extending from the AV bundle, ensuring rapid and coordinated contraction of the ventricles.

Specialized muscle fibers that conduct electrical impulses very quickly, enabling efficient transmission of signals throughout the ventricles.

The inner lining of blood vessels, composed of a single layer of squamous epithelial cells, acting as a barrier between blood and tissues.