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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.
The base of the heart is where the great vessels are attached. Apex of the Heart. The inferior, pointed tip of the heart. Coronary Sulcus. A deep groove, marking the border between the atria and the ventricles. Anterior Interventricular Sulcus. Shallow depressions that mark the boundary between the left and right ventricles.
Chapter 18 - The Cardiovascular System: The Heart (Short Answers) Define systole and diastole. Which heart chambers are usually referenced when these terms are used. Answer: Systole is contraction of the muscle. Diastole is relaxation of the muscle. The contraction and relaxation of the ventricles are normally described with the terms systole ...
The circulatory system - a PDF file of the upper and lower body for printing out to use off-line; Articles: Describe and explain the function of the circulatory system - The circulatory system consists of the heart, the blood vessels (veins, arteries, and capillaries), and the blood. The heart is a four-chambered muscular organ ...
Oct 30, 2023 · Worksheet showing unlabelled heart diagrams. Using our unlabeled heart diagrams, you can challenge yourself to identify the individual parts of the heart as indicated by the arrows and fill-in-the-blank spaces. This exercise will help you to identify your weak spots, so you’ll know which heart structures you need to spend more time studying ...
Oct 31, 2024 · heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fishes the heart is a folded tube, with three or four enlarged areas that correspond ...
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Location of the Heart. 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 ...
