Q13: Explain Heart Sounds.
Answer:
Heart valves close and open, producing sounds that are known as heart sounds. Two typical heart sounds named lub and dub can be heard in a healthy person. During each cardiac cycle, lub and dubb are audible. The bicuspid and tricuspid valves closing together cause the first sound or lub. It has a low pitch. The closure of semilunar valves results in the second sound dub. It has a high pitch. In the clinical diagnosis of any heart-related illness, both sounds are crucial.
NCERT Solutions Class 11 Biology Chapter 15 Body Fluids and Circulation
NCERT Solutions for class 11 Chapter-15 Body Fluids and Circulation. The chapter on Body Fluids and Circulation is important for students approaching the board exams. This article introduces NCERT solutions designed to help students. It explains the concepts of further learning and how to write to get good grades in exams. The solutions are presented in elementary language for ease of understanding.
NCERT CBSE Chapter 15 Body Fluids and Circulation discusses the importance of fluids for the body and how they are circulated. All living cells need oxygen, nutrition, and a few other fundamental components to function correctly. Additionally, regular elimination of waste or toxic substances from the body is necessary for the healthy operation of the bodily tissues. The bodily fluid that is most frequently used in higher organisms, including humans is blood. Lymph is another often-used bodily fluid that aids in the transportation of vital creatine components. This whole chapter talks in detail about Body fluids and how it actually circulates Revise the basic concepts of Body Fluids and Circulation for quick revision and class notes.
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