Q: Which of the following is the correct formula for calculating mean arterial pressure (MAP)?

$$ \text{MAP} = \text{Diastolic Pressure} + \frac{\text{Pulse Pressure}}{3} $$

Question 1

Which of the following blood cells is primarily responsible for phagocytosis of bacteria and is the most abundant type of leukocyte in a normal blood smear?

Accepted Answer

Neutrophil

Question 2

A patient with blood type B- can safely receive blood from which of the following types?

Accepted Answer

B-, O-

Question 3

In the context of blood histology, which cell type is characterized by a bilobed nucleus and red-orange granules in the cytoplasm?

Accepted Answer

Eosinophil

Question 4

A blood smear shows microcytic and hypochromic red blood cells. Which pathology is most likely present?

Accepted Answer

Iron deficiency anemia

Question 5

Which of the following is the correct order of blood flow through the heart, starting from the superior vena cava?

Accepted Answer

Superior vena cava → Right atrium → Tricuspid valve → Right ventricle → Pulmonary SL valve → Pulmonary trunk

Question 6

Which heart valve prevents backflow of blood from the left ventricle to the left atrium?

Accepted Answer

Bicuspid (mitral) valve

Question 7

A patient’s EKG shows 18 small squares between two consecutive R waves. What is the patient’s heart rate?

Accepted Answer

$$ \frac{1500}{18} = 83.3 $$ bpm

Question 8

Which vessel is NOT part of the Circle of Willis?

Accepted Answer

Basilar artery

Question 9

A blood pressure reading is 135/85 mmHg. What is the mean arterial pressure (MAP)?

Accepted Answer

$$ 85 + \frac{50}{3} = 101.67 $$ mmHg

Question 10

Which lymphatic structure drains lymph from the left arm, left side of the head, and everything below the diaphragm?

Accepted Answer

Thoracic duct

Question 11

A patient with chronic lymphocytic leukemia would most likely show an increased number of which cell type in a blood smear?

Accepted Answer

Lymphocytes

Question 12

Which of the following best describes the function of the hepatic portal vein?

Accepted Answer

It carries nutrient-rich blood from the digestive organs to the liver.

Question 13

Which of the following is the correct sequence for the intrinsic conduction system of the heart?

Accepted Answer

SA node → AV node → AV bundle → Bundle branches → Purkinje fibers

Question 14

Which of the following best explains why atrial repolarization is not visible on a standard EKG?

Accepted Answer

It occurs during the QRS complex and is masked by ventricular depolarization.

Question 15

A patient presents with a blood smear showing hypersegmented neutrophils. Which condition is most likely?

Accepted Answer

Pernicious anemia

Question 16

Which of the following best describes the function of the chordae tendineae in the heart?

Accepted Answer

They prevent the atrioventricular valves from inverting during ventricular contraction.

Question 17

Which of the following is a correct statement about the direction of blood flow in arteries and veins (excluding pulmonary and fetal circulation)?

Accepted Answer

Arteries carry blood away from the heart; veins carry blood toward the heart.

Question 18

Which of the following is the correct formula for calculating mean arterial pressure (MAP)?

Accepted Answer

$$ 	ext{MAP} = 	ext{Diastolic Pressure} + \frac{	ext{Pulse Pressure}}{3} $$

Question 19

A patient is found to have agglutination in the B well but not in the A or Rh wells during blood typing. Which antibodies are present in their plasma?

Accepted Answer

Anti-A and Anti-D

Question 20

Which of the following best describes the function of the pectinate muscles found in the auricles of the heart?

Accepted Answer

They increase the force of atrial contraction.

BIOL 204L Lab Practical I Review: Blood, Heart, Circulation, and Lymphatic System

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