THE HEART Anatomy of the Heart 1. Complete the following statements by inserting
ID: 3511997 • Letter: T
Question
THE HEART Anatomy of the Heart 1. Complete the following statements by inserting your answers in the answer blanks 1. The heart is a cone-shaped muscular organ located within the 2. of the (3)_ rib. The coronary arteries that nourish the 3. into the Relative to the roles of the heart chambers, the 4. discharging chambers. The membrane that lines the heart and 5. 6, 7. 8. 9. Its apex rests on the 2 and its base is at the level myocardium arise from the _4 The coronary sinus empties (6are receiving chambers, whereas the are also forms the valve flaps is called the _(8 The outermost layer of the heart is called the _9 The fluid that fills the pericardial sac acts to decrease_(10) during heart activity. The heart muscle, or myocardium, is composed of a special- ized type of muscle tissue called _an · - 10. 205Explanation / Answer
1. Thoracic cavity or thorax (in the thoracic cavity, Heart and lungs are located. Heart is located behind the breastbone.)
2.Diaphragm: Apex of the heart is directed downwards and is formed by the left ventricle.
3. Second rib : It is also called diaphragmatic surface.
4. Aorta: Coronary arteries arise from the left cusp of aortic valve.
5. Right atrium: Coronary sinus is term for a number of veins joined together, which collects blood from heart and empties into right atrium.
6. Atria: recieves deoxygenated blood from different parts of the body.
7. Ventricles: Ventricles pump oxygenated blood into different parts of the body.
8.Endocardium: These are thin and smooth membrane, which forms valves and line the organ internally
9. Epicardium: It is a serous membrane.
10. Friction: This is done to ensure efficient and powerful functioning of the heart without any hurdle.
11. Cardiac muscles: These are branched, involuntary muscles with single nucleus. Controlled by pacemaker cells in the heart .
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