Medical Science Mcqs 5254 MCQs [All-Courses]

Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

Starling’s law of the heard________________?

A Does not operate in the failing heart

B Does not operate during exercise

C Explains the increase in cardiac output that occurs when venous return is increased

D Explains the increase in cardiac output when the sympathetic nerves supplying the heart stimulated

Review Detailed Answer

Correct Answer: Explains the increase in cardiac output that occurs when venous return is increased

All the heart valves are open during which stage of cardiac cycle __________________?

A Systolic ejection

B Isovolumetric relaxation

C Isovolumetric contraction

D None of the above

Review Detailed Answer

Correct Answer: None of the above

Cardiac output is not affected by __________________?

A Heart rate

B Peripheral resistance

C Systolic blood pressure

D Venous return

Review Detailed Answer

Correct Answer: Systolic blood pressure

Stroke output of each ventricle in normal adult is_____________?

A 30 ml

B 130 ml

C 70 ml

D 5 liters

Review Detailed Answer

Correct Answer: 70 ml

Normally, the rate of the heart beat in a human is determined by _________________?

A The bundle of His

B All cardiac muscle

C The sinoatrial node

D The cervical ganglion

Review Detailed Answer

Correct Answer: The sinoatrial node

The first heart sound is produced by the_____________?

A Closure of the aortic and pulmonary valves

B Opening of the aortic and pulmonary valves

C Closure of the mitral and tricuspid valves

D Opening of the mitral and tricuspid valves

Review Detailed Answer

Correct Answer: Closure of the mitral and tricuspid valves

Which of the following agents in not likely to be found in plasma ?

A Thrombin

B Fibrinogen

C Prothrombin

D Calcium ion

Review Detailed Answer

Correct Answer: Thrombin

Hemoglobin has______________?

A Four polypeptide chains, 2α, 1β,1Υ chain

B Four heme molecules and four polypeptide chains

C Four heme molecules, 2α and 2β chains

D One heme and one globin molecule

Review Detailed Answer

Correct Answer: One heme and one globin molecule

Life cycle of RBC is_______________?

A 12 days

B 90 days

C 120 days

D One month

Review Detailed Answer

Correct Answer: 120 days

IN acute infection which of the following is found_______________?

A Leucopenia

B Leukocytosis

C Neutrophilia

D Neutropenia

Review Detailed Answer

Correct Answer: Neutrophilia

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Medical Science Mcqs 5254 MCQs [All-Courses]

All Topics 5254

All Topics 5254

Starling’s law of the heard________________?

All the heart valves are open during which stage of cardiac cycle __________________?

Cardiac output is not affected by __________________?

Stroke output of each ventricle in normal adult is_____________?

Normally, the rate of the heart beat in a human is determined by _________________?

The first heart sound is produced by the_____________?

Which of the following agents in not likely to be found in plasma ?

Hemoglobin has______________?

Life cycle of RBC is_______________?

IN acute infection which of the following is found_______________?