Which of the following is the number of vertebrae in each section of the vertebral column?
Cervical: 7: Thoracic: 14: Lumbar: 6
Cervical: 7: Thoracic: 12: Lumber: 5
Cervical: & Thoracic: 12: Lumbar: 5: Sacral 3
Cervical: & Thoracic: 14: Lumbar: sacral: 4
The Correct Answer is B
a: Cervical: 7, Thoracic: 14, Lumbar: 6 - This count for the thoracic vertebrae is incorrect; there are typically 12 thoracic vertebrae.
b. Cervical: 7, Thoracic: 12, Lumbar: 5-The vertebral column consists of cervical (neck), thoracic (upper back), lumbar (lower back), sacral, and coccygeal regions. The cervical region has 7 vertebrae, the thoracic region has 12, and the lumbar region has 5.
c: Cervical: & Thoracic: 12, Lumbar: 5, Sacral: 3 - This count for the cervical vertebrae is incorrect; there are typically 7 cervical vertebrae.
d: Cervical: & Thoracic: 14, Lumbar: Sacral: 4 - The counts for cervical and lumbar vertebrae are incorrect; there are typically 7 cervical vertebrae and 5 lumbar vertebrae.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a. Aortic: This valve has three cusps and is open during systole to allow blood flow from the left ventricle into the aorta.
b. Mitral: This valve, also known as the bicuspid valve, has two leaflets and closes during systole to prevent backflow of blood into the left atrium.
c. Pulmonic: This valve has three cusps and is open during systole to allow blood flow from the right ventricle into the pulmonary artery.
d. Tricuspid: This valve has three leaflets and closes during systole to prevent backflow of blood into the right atrium.
Correct Answer is B
Explanation
a. Stratum granulosum: This layer is composed of keratinocytes that are in the process of dying and forming a barrier of keratin.
b. Stratum basale: This is the deepest layer of the epidermis, where keratinocytes are actively dividing. This layer contains stem cells that produce new keratinocytes to replace those shed from the surface.
c. Stratum lucidum: This layer is only present in thick skin, such as on the palms and soles, and consists of dead keratinocytes that have a translucent appearance.
d. Stratum spinosum: This layer contains keratinocytes that are beginning to produce keratin and other proteins but are not rapidly dividing.
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