Explain blood clotting in short.

Important Questions on Respiration and Circulation

EASY

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.4

Describe pericardium.

EASY

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.4

 Describe valves of human heart.

EASY

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.4

What is role of papillary muscles and chordae tendinae in human heart?

MEDIUM

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.4

Explain in brief the factors affecting blood pressure.

MEDIUM

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.5

Give scientific reason.
Closed circulation is more efficient than open circulation.

MEDIUM

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.5

Give scientific reason. Human heart is called as myogenic and auto-rhythmic.  

MEDIUM

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.5

Give scientific reason: Person who has undergone heart transplant needs lifetime supply of immunosuppressants.  

EASY

12th Maharashtra Board

IMPORTANT

Biology Standard 12>Chapter 8 - Respiration and Circulation>Exercise>Q Q.5

Give scientific reason: Arteries are thicker than veins.