$$\text{MAP} = \text{Diastolic Pressure} + \frac{1}{3}(\text{Systolic Pressure} - \text{Diastolic Pressure})$$

$$\text{MAP} = 80 + \frac{1}{3}(120 - 80) = 80 + \frac{1}{3}(40) = 80 + 13.33 = 93.33$$ mmHg

Question 1

Which structure is responsible for preventing backflow of blood from the right ventricle into the right atrium during ventricular contraction?

Accepted Answer

Tricuspid valve

Question 2

A patient’s ECG shows a heart rate of 120 beats per minute. Which term best describes this condition?

Accepted Answer

Tachycardia

Question 3

Which of the following best describes the function of the papillary muscles in the heart?

Accepted Answer

They anchor the chordae tendineae, preventing valve prolapse during systole.

Question 4

During auscultation, which area is best for listening to the mitral valve?

Accepted Answer

Left fifth intercostal space, midclavicular line

Question 5

Which blood vessel carries oxygenated blood from the lungs to the heart?

Accepted Answer

Pulmonary vein

Question 6

A blood pressure reading is 140/90 mmHg. What is the pulse pressure?

Accepted Answer

50 mmHg

Question 7

Which formula correctly calculates the mean arterial pressure (MAP)?

Accepted Answer

$$	ext{MAP} = 	ext{Diastolic Pressure} + \frac{1}{3}(	ext{Systolic Pressure} - 	ext{Diastolic Pressure})$$

Question 8

Which structure is found at the apex of the heart?

Accepted Answer

Left ventricle

Question 9

On an ECG strip, which segment represents ventricular depolarization?

Accepted Answer

QRS complex

Question 10

A patient has a blood pressure of 120/80 mmHg and a heart rate of 75 bpm. Calculate the mean arterial pressure (MAP).

Accepted Answer

$$	ext{MAP} = 80 + \frac{1}{3}(120 - 80) = 80 + \frac{1}{3}(40) = 80 + 13.33 = 93.33$$ mmHg

Question 11

Which vessel is a direct branch of the aortic arch?

Accepted Answer

Brachiocephalic trunk

Question 12

Which structure is NOT part of the heart’s conduction system?

Accepted Answer

Papillary muscle

Question 13

Which layer of a blood vessel is primarily responsible for vasoconstriction and vasodilation?

Accepted Answer

Tunica media

Question 14

Which instrument is used to measure blood pressure?

Accepted Answer

Sphygmomanometer

Question 15

Which structure is the main collecting vessel for venous blood from the heart muscle?

Accepted Answer

Coronary sinus

Question 16

Which lymphatic structure drains lymph from the lower limbs and abdomen?

Accepted Answer

Cisterna chyli

Question 17

A patient’s ECG shows a prolonged Q-T interval. What is the most likely consequence?

Accepted Answer

Increased risk of ventricular arrhythmias

Question 18

Which of the following best describes a heart murmur?

Accepted Answer

An abnormal heart sound caused by turbulent blood flow

Question 19

Which vessel returns blood from the head and upper limbs to the right atrium?

Accepted Answer

Superior vena cava

Question 20

Which structure is found in the medulla of a lymph node?

Accepted Answer

Lymphatic cords

Cardiovascular and Lymphatic Systems: Lab Practical Study Guide

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