Class 11 Bio Ch 12 Notes
Important easy to understand Notes of Class 11 Bio Ch 12 Notes written by Professor Taskeen Hasider Suib. These notes are very helpful in the preparation of Biology for students of the 11 class Biology and these are according to the paper patterns of all Sindh Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Definition of Circulatory System and its types (i) Open Circulatory system (ii) Close circulatory system
- Definition of Open circulatory system
- Definition of Closed circulatory system
- Difference between a circulatory system and closed type circulatory
- Describe the Kinds of a closed type circulatory system.
- Definition of single circuits circulation and Double circuits and circulation.
- Difference between single circulatory circulation and double circuit circulation
- Explain the structure of heart
- Regulation of body temperature in hot and cold weather.
- Why double circulation is better than single circulation?
- Elaborate on coronary circulation and its significance.
- What is the pericardium? Explain its function.
- Why higher animals need circulatory system?
- Why SA node is called pace maker of heart?
- What are LUB and DUB sound?
- Why blood flow faster in arteries?
- What is pulmonary circulation? Explain.
- Define systemic circulation.
- Write down the general characteristics of a circulatory system.
- Explain the three layers of the heart wall.
- Explain the three major blood vessels of the human body.
- What is the function of the heart valves? Provide examples of various valves.
- What is meant by myocardial infarction?
- Why capillaries have single layer of endothelium?
- Why circulatory system of arthropods is called open type?
- What are the two major circulation pathway of blood?