A red blood cell, entering the right side of the heart passes by or through the following structures
(1) Atriventricular valves
(2) Semilunar valves
(3) Right atrium
(4) Right ventricle
(5) SAN
Which of the following options represents the correct sequence ?

Which of the following is not true chamber of frog's heart? 1)Pylangium 2) Sinus venosus 3) Right atrium 4) Both 1 and 2

Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left. The left upper chamber (A) then relaxes. It then contracts and the blood is allowed to enter the next chamber (B), as it expands. When the muscular left lower chamber of heart contracts the blood is pumped out to the body via aorta. Deoxygenated blood reaches from the body to the upper chamber on the right side of heart (C) and it expands. As this part contracts, the corresponding lower chamber (D) dilates. This transfers the blood to right ventricle, which in turn pumps it to the lungs for oxygenated. What is the correct route of blood in a human?

Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left. The left upper chamber (A) then relaxes. It then contracts and the blood is allowed to enter the next chamber (B), as it expands. When the muscular left lower chamber of heart contracts the blood is pumped out to the body via aorta. Deoxygenated blood reaches from the body to the upper chamber on the right side of heart (C) and it expands. As this part contracts, the corresponding lower chamber (D) dilates. This transfers the blood to right ventricle, which in turn pumps it to the lungs for oxygenated. Which of these correctly represents the label A,B,C and D in the above passage?

Read the statements regarding the cardiac system and choose the right option Human heart is an ectodermal derivative Mitral valve guards the opening between the right atrium and left ventricle SAN is located on the left upper corner of the right atrium Stroke volume xx Heart rate = Cardiac output

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.

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.

Which of the following structures ultimately drains, deoxygenated blood fro heart musculature through coronary vein into right atrium?

Closure of which of the following makes louder sound of heartbeat ? 1. Thebesian 2. Eustachian 3. Semilunar valves 4. Atrio-ventricular valves