Chordae tendineae are found in
atria of heart
ventricles of heart
- ventricles of brain
- arch of aorta
The Correct Option is B
Solution and Explanation
Chordae tendineae are found in ventricles of heart. They are commonly called as heart strings. Chordae tendineae are fibrous cords of connective tissue which connects the tricuspid valve and the mitral valve to the papillary muscles of the heart. These fibrous cords resembles tendon in appearance and are made up of about 80% collagen.
They prevent the cusps of the valves to swing back into the atrial chamber when they close with pressure. When the ventricles of the heart contract, blood pressure is increased in both the chambers that results in closing of AV valves. The closure of the valves prevent blood from flowing back into the atria. But the pressure in atria at this time is lower than the ventricles, so the flaps of the valves tends to turn into the low-pressure region. The chordae tendineae prevents this turning by holding them in the position.
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Concepts Used:
Body Fluids and Circulation
Liquid substances in the animal or human body are known as body fluids. The human body consists of about 60-67% body fluids. The chief components of the human body fluids are blood and lymph. Blood comprises a matrix called plasma with blood corpuscles floating in it. The blood cells are white blood cells, red blood cells, and platelets. Lymph consists of lymph cells.
Read More: Body Fluids and Circulation
Types of Body Fluids:
The different types of body fluids:
Blood
The main components of blood involve;
- Plasma
- Red Blood Cells
- White Blood Cells
- Platelets
Lymph
A colorless fluid present in the interstitial tissues is lymph. It circulates all over the lymphatic system. It can be described as blood without the RBCs. The exchange of hormones, nutrients, and gases occurs via this fluid. It contains lymphocytes that play a major function in the immune responses of the body.
The movement of blood across the vessels of the body that carries nutrients and gases along with it and removes waste from the different parts of the body is circulation.
Types of Circulatory Systems:
There are two types of circulatory systems:
- Open Circulatory system
- Closed circulatory system