NBCE Part 1 Chiro Exam Prep Exam Questions & Answers 2026 (21–30)

Question 1

What is the function of the chordae tendineae in the heart?

TheoryPractice · Accepted Answer

To prevent valve prolapse during ventricular contraction. The chordae tendineae are fibrous cords that connect the papillary muscles to the atrioventricular valves (mitral and tricuspid), preventing valve prolapse during ventricular contraction.

Question 2

Which of the following structures is responsible for the drainage of lymph from most of the body into the venous system?

TheoryPractice · Accepted Answer

Thoracic duct. The thoracic duct is the largest lymphatic vessel and drains lymph from most of the body (except the right upper quadrant) into the venous system at the junction of the left subclavian and internal jugular veins.

Question 3

Which of the following best describes the location of the thymus?

TheoryPractice · Accepted Answer

In the anterior mediastinum, behind the sternum. The thymus is located in the anterior mediastinum, behind the sternum and above the heart, between the lungs.

Question 4

What type of capillaries are found in the spleen?

TheoryPractice · Accepted Answer

Discontinuous capillaries (sinusoids). Discontinuous capillaries (sinusoids) are found in the spleen, characterized by large gaps between endothelial cells that allow blood cells and macromolecules to pass between the vessel lumen and surrounding tissue.

Question 5

Which anatomical plane divides the body into anterior and posterior portions?

TheoryPractice · Accepted Answer

Coronal plane. The coronal (frontal) plane is a vertical plane that divides the body into anterior (front) and posterior (back) portions. This is distinct from the sagittal plane, which divides into right and left, and the transverse plane, which divides into superior and inferior portions.

Question 6

Which directional term correctly describes the relationship of the umbilicus to the xiphoid process?

TheoryPractice · Accepted Answer

Inferior. The umbilicus (navel) is located inferior to the xiphoid process (the most inferior portion of the sternum). Inferior means below or toward the feet in anatomical position.

Question 7

Which surface landmark is located at the intersection of the midclavicular line and the costal margin?

TheoryPractice · Accepted Answer

Tip of the 9th costal cartilage. The tip of the 9th costal cartilage is typically found at the intersection of the midclavicular line and the costal margin. This is an important landmark for locating underlying organs and performing physical examinations.

Question 8

In the anatomical position, which of the following statements is correct?

TheoryPractice · Accepted Answer

The palms face anteriorly. In the anatomical position, the body stands erect, facing forward, with arms at the sides and palms facing forward (anteriorly). The feet are parallel and the head is level.

Question 9

Which of the following structures is a reliable surface landmark for locating the cricothyroid membrane?

TheoryPractice · Accepted Answer

Thyroid cartilage. The thyroid cartilage (Adam's apple) is directly superior to the cricothyroid membrane. Palpating the thyroid cartilage and moving inferior allows for identification of the cricothyroid membrane, an important landmark in emergency airway procedures.

Question 10

The carotid pulse is best palpated at what location in the neck?

TheoryPractice · Accepted Answer

Between the trachea and sternocleidomastoid muscle. The carotid pulse is best palpated in the groove between the trachea and sternocleidomastoid muscle at the level of the thyroid cartilage. This location allows for optimal access to the common carotid artery.

NBCE Part 1 Chiro Exam Prep Exam Questions & Answers 2026 (21–30)

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