3. Short answer questions: 1. What is Palpitation? 2. What is the location of Pulmonary semilunar valve? 3. What is Homeostasis? 4. Define Circulatory system 5. What is Closed type of circulatory system? 6. Mention the difference between Lymphocytes and Monocytes 7. Why does deoxygenated blood of the right side of the heart not mixes with the oxygenated blood of the left side of the heart? 8. Mention the function of valves present in the heart 9. Why do mature RBCs do not have nucleus in them? 10. Why do arteries have thick walls?
Answers
Answer:
1.A sensation that the heart is racing,pounding,fluttering or skipping a beat,often bothersome but hardly ever a sign of heart disease
2.Pulmonary valve is located between the right ventricle and the pulmonary trunk(pulmonary orifice)the valve consist of three cusps-left, right and anterior(named by their position in the foetus before the heart undergoes rotation)
3.i)Homeostasis is the maintenance and regulation of the internal environment within the body
ii)The body is not maintaining a constant environment but rather a narrow range of condition
iii)The body is organized so that it has many controls in place to maintain a healthy environment
4.the system that contains the heart and the blood vessels and moves blood throughout the body.this system helps tissues get enough oxygen and nutrients and it helps them get rid of waste products.The lymph system, which connects with the blood system,is often considered part of a circulatory system