WebJul 21, 2015 · 12. Define a cardiac cycle and the cardiac output. Answer The sequential events taking place in the heart which is the contraction or systole and relaxation or diastole of both the atria and ventricles is called cardiac cycle. The volume of blood pumped out by the ventricles in one minute is called the cardiac output. 13. Explain heart sounds. WebOct 6, 2024 · 12th Class Biology Notes (All Chapters in Once Place) You can also download in PDF directly or you can view in the below images without downloading anything. Chapter 14 – Respiration Size: 3 MB Pages: 24 Direct Download PDF Chapter 14 Notes in Images Format M. Aamir Mursleen
Class 12 biology chapter 8 Respiration and Circulation solutions
Webcirculation, in anatomy and physiology, the continuous movement of blood throughout the body, driven by the pumping action of the heart. The circulation of the blood links the … WebAug 19, 2024 · (1) The nostrils are external openings of the nose. Oxygen rich air is taken into the body through the nostrils or external nares. Carbon dioxide and water vapour are released out of the body through the nostrils. (2) The internal nares open into the pharynx. The space between the external and internal nares is known as nasal chamber. pictures of cow snakes
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