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The opening between the right atrium and...

The opening between the right atrium and the right ventricle is guarded by which valve ?

A

Monocuspid valve

B

bicuspid valve

C

Tricuspid valve

D

Tetracuspid valve

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question about which valve guards the opening between the right atrium and the right ventricle, follow these steps: ### Step 1: Identify the Heart Chambers The heart consists of four chambers: the right atrium, right ventricle, left atrium, and left ventricle. The right atrium receives deoxygenated blood from the body, while the right ventricle pumps this blood to the lungs for oxygenation. **Hint:** Remember the function of each chamber of the heart to understand the flow of blood. ### Step 2: Understand the Valves of the Heart The heart has several valves that ensure unidirectional blood flow. The main valves include: - Tricuspid valve (between right atrium and right ventricle) - Bicuspid (mitral) valve (between left atrium and left ventricle) - Pulmonary valve (between right ventricle and pulmonary artery) - Aortic valve (between left ventricle and aorta) **Hint:** Familiarize yourself with the names and locations of the heart valves. ### Step 3: Focus on the Right Side of the Heart Since the question specifically asks about the opening between the right atrium and right ventricle, we need to focus on the valve that is located there. **Hint:** Think about the right side of the heart and which valve would regulate blood flow from the atrium to the ventricle. ### Step 4: Identify the Correct Valve The valve that guards the opening between the right atrium and the right ventricle is called the **tricuspid valve**. It is named "tricuspid" because it is composed of three flaps (or cusps). **Hint:** The prefix "tri-" indicates the number of flaps in the tricuspid valve. ### Step 5: Conclusion Therefore, the correct answer to the question is the **tricuspid valve**. **Final Answer:** The opening between the right atrium and the right ventricle is guarded by the **tricuspid valve**.
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Assertion : The opening between the right atrium and the right ventricle is guarded by a bicuspid or mitral valve. Reason : The valves in the heart allows the flow of blood only in one direction.

Read the following statements about the internal structure of the human heart. I. Humans have a an auto - excitable , chambered , muscular and myogenic heat. II. The heart is mesodermal in origin and is present symmetrically between two lungs in the thoracic cavity. III. The opening between the right atrium and left ventricle is guarded by a tricuspid valve. IV. Only the sino - atrial node of the heart has hte ability to generate action potentials without any external stimuli. How many statement/s is/ are incorrect from the above ?

Knowledge Check

  • The valve present between the right atrium and right ventricle is called

    A
    A) bicuspid valve
    B
    B) mitral valve
    C
    C) semilunar valve
    D
    D) tricuspid valve

  • Which of the following statements (s) regarding the cardiac system is/are correct ? (i) Human heart is an ectodermal derivative (ii) Mitral valve guards the opening between the right atrium and left ventricle (iii) SAN is located on the left upper corner of the right atrium (iv) Stroke volume xx Heart rate = Cardiac output.

    A
    (i) only
    B
    (i) and (ii)
    C
    (ii) and (iii)
    D
    (iv) only

  • Read the following statements carefully (i) In fishes, the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts from where deoxygenated blood is returned to the heart. (ii) The openings of the right and the left ventricle into pulmonary artery and aorta respectively are provided with the mitral valves. (iii) The nodal musculature has the ability to generate action potential without any external stimuli, i,e., it is autoexcitable. (iv) The T-wave of ECG represents depolarisation of the ventricles. Which of the above four statements are incorrect?

    A
    (i) and (ii)
    B
    (ii) and (iv)
    C
    (i) and (ii)
    D
    (iii) and (iv)

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    a. Amphibians and reptiles have a 3 chambered heart with ___ atria and ___ventricle. b. Heart is ___ derived organ and protected by a double walled membranous bag called ____ c. The opening between right Atrium and Right ventricle is guarded by a valve formed of ___ muscular flaps, the ___ valve. d. The wall of ventricle is ____ than atria. e. SAN can generate the maximum number of action potential i.e., ____ mi n^(-1) . therefore it is called _____ f. Atrial systole increases the flow of blood into the ventricles by about ____ percent. g. In ____ all the four chambers of the heart are in a relax state. h. The ____ wave represents the depolarisation of the atria. i. A system of blood vessels is present in our body exclusively for the circulation of blood to and from the cardiac musculature called _____ j. PNA ____ the rate of heart beat and ______

    Post caval in the right auricle is guarded by

    Bicuspid valve is present between the right atrium and the right ventricle.

    Which of the following is a correct match regarding valves and their respective location? 1) Tricuspid valve (Valves) - Aorta (Location) 2) Mitral valve (Valves) - Between left atrium and left ventricle (Location) 3) Bicuspid valve (Valve) - Between right atrium and right ventricle (Location) 4) Semilunar valve (Valves) - Between left and right atrium (Location)

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