The nurse is reviewing the sequence of the cardiac cycle. The nurse recognizes that the electrical stimulus of the cardiac cycle follows which sequence?

AV node-SA node bundle of His- bundle branches

SA node- AV node-bundle of His -bundle branches

Bundle of His- AV node- SA node- Erb's Point

AV node-SA node-bundle of His- Erb's Point

Answer and Explanation

The Correct Answer is B

A. AV node - SA node - bundle of His - bundle branches:

This sequence is incorrect. The SA node (sinoatrial node) initiates the electrical impulse in the heart, followed by the AV node (atrioventricular node), bundle of His, and then the bundle branches.

B. SA node - AV node - bundle of His - bundle branches:

This sequence is correct. The electrical stimulus of the cardiac cycle starts at the SA node, which is the natural pacemaker of the heart. From the SA node, the impulse travels to the AV node, then to the bundle of His, and finally to the bundle branches, which distribute the impulse to the ventricles, causing them to contract.

C. Bundle of His - AV node - SA node - Erb's Point:

This sequence is incorrect. Erb's Point is a point on the chest where heart sounds S2 and S3 can be heard most distinctly.

D. AV node - SA node - bundle of His - Erb's Point:

This sequence is incorrect. The AV node comes after the SA node in the electrical conduction system of the heart. Erb's Point is not a part of the normal cardiac conduction pathway; it is a location for auscultation on the chest.

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Correct Answer is A

Explanation

A. When part of the lung is obstructed or collapsed: This statement is accurate. Unequal chest expansion can occur when part of the lung is obstructed or collapsed, preventing the affected area from expanding normally during inhalation.

B. When bulging of the intercostal spaces is present: This statement is not accurate. Unequal chest expansion typically refers to decreased expansion on one side, not bulging of intercostal spaces.

C. In an obese patient: This statement is not accurate. Obesity can affect breathing patterns and lung function, but it is not the primary cause of unequal chest expansion.

D. When accessory muscles are used to augment respiratory effort: This statement is not accurate. The use of accessory muscles to augment respiratory effort can be a sign of respiratory distress, but it doesn't directly cause unequal chest expansion. Unequal expansion is more indicative of specific lung conditions or issues with lung mechanics.

A. Glandular tissue, which supports the breast by attaching to the chest wall. B. Fibrous, glandular, and adipose tissues C. Primarily muscle with very little fibrous tissue. D. Primarily milk ducts, known as lactiferous ducts.

Correct Answer is B

Explanation

A. Glandular tissue, which supports the breast by attaching to the chest wall: Glandular tissue is indeed a part of the breast structure, but it is not responsible for supporting the breast by attaching to the chest wall. It's the Cooper's ligaments, which are fibrous connective tissue, that provide structural support.

B. Fibrous, glandular, and adipose tissues: This statement is correct. The breast is composed of glandular tissue (responsible for milk production), fibrous tissue (including Cooper's ligaments for support), and adipose tissue (fat).

C. Primarily muscle with very little fibrous tissue: The breast contains very little muscle tissue. The main supportive structure is fibrous tissue, not muscle.

D. Primarily milk ducts, known as lactiferous ducts: Milk ducts are part of the glandular tissue and are responsible for carrying milk. However, the breast is not primarily made up of milk ducts; it consists of a combination of glandular, fibrous, and adipose tissues.

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The nurse is reviewing the sequence of the cardiac cycle. The nurse recognizes that the electrical stimulus of the cardiac cycle follows which sequence?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse is doing an assessment of an adult client and noticed unequal chest expansion. The nurse recognizes that unequal chest expansion occurs:

Correct Answer is A

Explanation

The nurse recognizes that the following statement is true regarding the internal structures of the breast: The breast is made up of:

Correct Answer is B

Explanation

The nurse is conducting a class on Breast Self Examination (BSE). The nurse should include which of these statements that indicates the proper BSE technique.

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The nurse is inspecting the anterior chest of an adult client. The nurse recognizes that which of the following should be included in the assessments?

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