Human Heart

Q.

Long bones with air cavities occur in:

1. Alligator

2. Corvus

3. Canis

4. Naja

Q.

The foramen ovale in the fetal heart is located in the

1. right atrium

2. left atrium

3. inter-ventricular septum

4. inter-atrial septum

Q. Suppose a person is found to have a resting cardiac output of $5.0$ litres per minute and a heart rate of $50$ beats per minute. Calculate the stroke volume.

1. $1000\text{mL}$
2. $10\text{mL}$
3. $250\text{mL}$
4. $100\text{mL}$

Q. In an embryo, the blood vessel between pulmonary trunk and aorta is called

1. ligamentum arteriosum
2. foramen ovale
3. ductus arteriosus
4. fossa ovalis

Q.

A non steroid hormone from heart to regulate the kidney function ____.

1. ANP

2. Erythropoietin

3. Renin

4. Leptin

Q. In the first phase of the cardiac cycle when both the atria are filled with blood, an action potential is generated by the SA node and then the atria contract. This is called as ________________.

1. atrial systole
2. ventricular diastole
3. atrial diastole
4. ventricular systole

Q.

In an embryonic circulation, blood is directly shunted from right to left (i)_____ through an embryonic septum called (ii)_______. Later, the flap guarding the embryonic septum fuses with the interatrial septum to form (iii)_______. The condition where the septum does not fuse is called (iv)______ .

1. (i)Atrium, (ii) Foramen ovale, (iii) Fossa ovalis, (iv) Patent foramen ovale.

2. (i) Foramen ovale, (ii) Atrium, (iii) Patent foramen ovale, (iv) Fossa ovalis.

3. (i)Fossa ovalis, (ii) Patent foramen ovale, (iii) Atrium (iv) Foramen ovale.

4. (i) Foramen ovale, (ii) Fossa ovalis, (iii) Foramen ovale, (iv) Atrium.

Q. Which of the following valves guards the entry of the superior vena cava into the right atrium?

1. Haversian valve
2. Eustachian valve
3. Thebesian valve
4. Tricuspid valve

Q.

WHY IS HEART MESODERMALLY DERIVED ORGAN? WHAT DOES MESODERMAL MEAN?

Q.

Assertion : Echocardiography serves many functions.

Reason : Echocardiography can allow identification of mass lesions within and adjacent heart.

1. If both assertion and reason are true and the reason is the correct explanation of the assertion.
2. If both assertion and reason are true but reason is not the correct explanation of the assertion.
3. If assertion is true but reason is false.
4. If the assertion and reason both are false.
5. If assertion is false but reason is true.