Cardiac Cycle

Q. Muscular walls of ventricles are thicker than the walls of auricles. Why?

Q.

If each ventricle pumps out 65ml of blood in each cardiac cycle, then cardiac output will be

1. 4900 ml

2. 4550 ml

3. 5040 ml

4. 4680 ml

Q.

Why there is more inner space in right auricle and ventricle when compared to left side?

Q. ​ (ii) Heart and circulatory system are formed in the embryo by the end of ________ months of pregnancy.

Q.

In humans, what does the normal systolic and diastolic blood pressure mean?

Q.

The cardiac cycle includes everything except

1. Ventricular systole

2. Atrial systole

3. Angina pectoris

4. Atrial diastole

Q.

How is systemic vascular resistance determined?

Q. Which of the following statements are correct with respect to blood pressure?

1. Blood pressure inside the artery during contraction is systolic pressure.
2. Blood pressure inside the vein during relaxation is diastolic pressure.
3. Normal diastolic pressure is 120 mm of Hg.
4. Normal systolic pressure is 120 mm of Hg.

Q. Which is the sequence of correct blood flow?

[Review question: Pg. No: 213]

Q.

Which of the following will generate the maximum amount of pressure?

1. Diastole of left ventricle

2. Systole of right ventricle

3. Systole of left ventricle

4. Diastole of right ventricle

Q. The image shows the path that blood takes through the circulatory system in two vertebrate groups X and Y respectively. Observe the images carefully and identify the correct option.

i. Vertebrate group X is pisces, while group Y is amphibian.

ii. Blood travels only once through the heart in vertebrate group X during one complete circulation.

iii. Organisms belonging to X and Y are cold-blooded.

iv. Vertebrate group Y has organisms with single circulation.

[0.8 Mark]

1. i and ii
2. iii and iv
3. ii and iii
4. i and iii

Q. To which organ does femoral artery supply blood

1. Dorsal part of thigh
2. Rectum.
3. All parts of hind limb
4. Ventral part of hindlimb

Q. Match the terms given in Column I with terms in Column II:

Column I	Column II
(i) Left-auricle	(a) Clotting
(ii) Right auricle	(b) Thebasius value
(iii) Left ventricle	(c) Pulmonary vein
(iv) Right-ventricle	(d) Aorta
(v) Fibrin	(e) Pulmonary arch

Q. During active ventricular filling which of the following happen?

1. Atria contract
2. Ventricles contract
3. Atria relax
4. Ventricles relax

Q. Blood pressure in the mammalian aorta is maximum during

1. systole of the left atrium
2. diastole of the right ventricle
3. systole of the left ventricle
4. diastole of the right atrium

Q. If the systolic pressure is 120 mm Hg and diastolic pressure is 80 mm Hg, the pulse pressure is

1. 120 /80 = 1.5 mm Hg
2. 120 * 80 = 9600 mm Hg
3. 120 + 80 = 200 mm Hg
4. 120 - 80 = 40mm Hg

Q. In cardiac cycle maximum time is taken by

1. Atria systole
2. Atria diastole
3. Ventricle diastole
4. Ventricle systole

Q.

During the systolic phase of cardiac cycle, blood _____________.

1. leaves the heart

2. rests in the heart

3. returns to the heart

4. enters the heart

Q. Isovolumic contraction and relaxation refer to (the)

1. Both ventricles
2. Left ventricle
3. Right ventricle
4. Both atria

Q. In the cardiac cycle, diastole is

1. The relaxation period after contraction of the heart
2. The number of heart beats per minute
3. The contraction period after relaxation of the heart
4. The forceful pumping action of the heart