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an abnormal sound of the heart; sometimes a sign of abnormal function of the heart valves. Explain what information can be gained from an electrocardiogram (EKG) The underlying rate and rhythm mechanism of the heart. The orientation of the heart (how it is placed) in the chest cavity.
White blood cells. Blood cells that perform the function of destroying disease-causing microorganisms. Ventricles. Which chambers are composed of more cardiac muscle? Arteries. carry blood away from the heart. Study with Quizlet and memorize flashcards containing terms like Aorta, Superior Vena Cava, Right Atrium and more.
Terms in this set (82) size and location of the heart. size of fist; located superior to diaphragm and left of midline. pericardium. a double-walled sac around the heart (fibrous and serous) pericardial cavity. the fluid-filled space between the two layers of the pericardium. 3 layers of the heart. epicardium.
The human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. Figure 19.2 shows the position of the heart within the thoracic cavity. Within the mediastinum, the heart is separated from the other mediastinal structures by a tough membrane known as the pericardium, or pericardial sac ...
The heart pumps around 6,000-7,500 litres of blood in a day throughout the body. The heart is situated at the centre of the chest and points slightly towards the left. On average, the heart beats about 100,000 times a day, i.e., around 3 billion beats in a lifetime. The average male heart weighs around 280 to 340 grams (10 to 12 ounces).
- Pulmonary circulation is a type of blood circulation responsible for carrying deoxygenated blood away from the heart, and to the lungs, where it is...
- In systemic circulation, the heart pumps the oxygenated blood through the arteries to every organ and tissue in the body, and then back again to th...
- The heart is a muscle, and it needs a constant supply of oxygenated blood to survive and work effectively. This is where coronary circulation fulfi...
- The human heart is divided into four chambers, namely two ventricles and two atria. The ventricles are the chambers that pump blood and atrium are...
- Left atrium Right atrium Left ventricle Right ventricle
- The pericardium is a fibrous membrane that envelops the heart. It also serves a protective function by producing a serous fluid, which lubricates t...
- The heart wall is made up of 3 layers, namely: Epicardium – This is the outermost layer of the heart. It is composed of a thin layer of membrane th...
- The blood vessels comprise: Veins – It supplies deoxygenated blood to the heart via inferior and superior vena cava, eventually draining into the...
- Valves are flaps of tissues that are present in cardiac chambers between the veins. They prevent the backflow of blood. Examples include the atriov...
Quiz: The Heart. The right ventricle is the chamber of the heart that pumps blood for the pulmonary circulation. Based on this information, blood from the right ventricle is on its way to the __________. Which of the following is correct regarding blood flow in reference to the right side of the heart?
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Which atria is pumped through the heart?
The shape of the heart is similar to a pinecone, broad at the superior surface (called the base) and tapering to the apex. A typical heart is approximately the size of your fist: 12 cm (5 in) in length, 8 cm (3.5 in) wide, and 6 cm (2.5 in) in thickness. Given the size difference between most members of the sexes, the weight of a female heart ...
