Heart and Vena Cava

The heart is divided into four chambers; the superior chambers (atria) receive blood and are connected to the inferior chambers (ventricle), through the atrioventricular valves. Once in the ventricles, blood is ejected to the vasculature through the semilunar valves. These valves, similar to the ones in the veins, ensure the unidirectionality of blood flow.

There are two types of arteries in the body: Pulmonary and systemic. The pulmonary artery carries deoxygenated blood from the heart, to the lungs, for purification while the systemic arteries form a network of arteries that carry oxygenated blood from the heart to other parts of the body. Arterioles and capillaries are further extensions of the (main) artery that help transport blood to tinier parts in the

The cardiovascular system can be split into three different parts: the blood, the heart, and the blood vessels. They all work within the cardiovascular system in their own individual ways and each has their own unique characteristics and functions within the system.

Blood Blood is another important part of the body it carries nutrients, water, oxygen and waste products to places in your body. Your blood is pumped by your heart.

The heart has two parts each with a left and right form (meaning four total): the auricle and ventricle. Knowing this, though it may seem backwards, it is helpful to consider various characteristics of the veins and arteries that are intimately connected with these parts. There are two veins, the pulmonary vein and the vena cava. There are two arteries as well, the aorta and the pulmonary artery. The way these function together, as Harvey demonstrated, is that the vena cava takes blood into the right auricle. This blood is pushed into the right ventricle, where it cycles through the lungs from the pulmonary artery and arrives at the left ventricle through the pulmonary vein. From here, the blood is pushed into the left ventricle where is distributed to the body through the aorta. These are the purposes and functions of the various veins and arteries

The circulatory system consists of 2 loops, the pulmonary circulation loop and the systemic circulation loop. The Pulmonary circulation helps in transporting deoxygenated blood from the right side of the heart to the lungs, where the blood picks up oxygen and returns to the left side of the heart.20 The pumping chambers of the heart that support the pulmonary circulation loop are the right atrium and right ventricle. The systemic circulation carries highly oxygenated blood from the left side of the heart

The heart is an organ located just behind and slightly to the left of the breastbone, and pumps blood through a network of veins and arteries known as the circulatory system. The right atrium is sent blood from the veins, and delivers it to the right ventricle. It is then pumped to the lungs where it is oxygenated. The left atrium collects the oxygen enriched blood from the lungs and delivers it to the left ventricle, where it is pumped throughout the body, and the ventricle contractions create blood pressure.

Capillaries cell walls are only one cell thick this is so they help substances move easier between the blood and tissue cells. Blood flows from the arteries into the capillaries. They are very narrow in diameter and this is because it helps to slow down the blood

The heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout the body. It also takes the body's waste products, including carbon dioxide, away from the tissues. As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The heart is a four-chambered, hollow organ. It is divided into the left and right side by a muscular wall called the septum. The right and left sides of the heart are further divided into two top chambers called the atria, which receive blood from the veins, and two bottom chambers called ventricles, which pump blood into the arteries. The arteries are major blood vessels connected to your heart.

2)- Structure/Anatomy of the Heart: The heart is a muscular pump and consists of four chambers: two superior atria and two inferior ventricles. The atria are the areas of the heart that receive blood that is returning to the heart after being circulated, whereas the ventricles are the chambers that propel blood out of the heart to then be circulated around the body. The heart chambers are further divided by the inter-atrial septum and the inter-ventricular septum (Marieb & Hoehn 2013, p. 662).

The heart pumps the blood around in the body. Every cell in body needs oxygen. The heart puts energy in blood and push blood into the vascular system.

In an adult organism, three different types of blood vessels can be distinguished: arteries, veins and capillaries. Arteries transport oxygen-rich blood from the heart to the rest of the body and experience the highest blood pressure. Via arterioles (small arteries) the blood reaches the capillaries, which deliver nutrients and oxygen to the tissues and remove waste products such as carbon dioxide and urea. The oxygen and nutrient poor blood is then transported further by venules (small veins) to the larger veins which return the blood back to the heart4.

The hearts function is to pump blood continuously around the body. It pumps it through the right side of the heart and on to the lungs.

Oxygenated blood flows out of the heart (the left ventricle) to all body parts apart from the lungs in order to send the oxygenated blood to body’s cells.

The heart is a hollow muscular organ that pumps blood throughout the blood vessels to various parts of the body by repeated, rhythmic contractions. It is found in all animals with a circulatory system, which includes the vertebrates.