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The atlas is also known as the

vertebrae.
Answer and Explanation

The Correct Answer is {"dropdown-group-1":"C"}

Rationale:
A. C2 refers to the axis, the second cervical vertebra, which allows rotation of the head.
B. T1 is the first thoracic vertebra, located in the upper back, not the cervical region.
C. The atlas is the first cervical vertebra and supports the skull, allowing nodding movements of the head (as in “yes”). It articulates with the occipital condyles of the skull and works in conjunction with the axis (C2) to facilitate head rotation.
D. L5 refers to the fifth lumbar vertebra, located in the lower back, not the cervical region.


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Related Questions

Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"B","dropdown-group-3":"A"}

Explanation

Rationale:
A. The human vertebral column is divided into regions: 7 cervical vertebrae in the neck, 12 thoracic vertebrae in the chest region (each articulating with a pair of ribs), and 5 lumbar vertebrae in the lower back. These vertebrae provide structural support, flexibility, and protection of the spinal cord.
B. This is incorrect because the cervical region has 7 vertebrae, not 5.
C. Incorrect, as both the cervical and thoracic counts are wrong.
D. Incorrect, because the lumbar region has 5 vertebrae, not 7.

Correct Answer is B

Explanation

Rationale:
A. Secretes the lubricating fluid for a synovial joint describes the synovial membrane, not a bursa.
B. Prevents friction between skin and bone, or a muscle tendon and bone; A bursa is a small, fluid-filled sac that cushions and reduces friction between moving structures, such as tendons, muscles, and bones. This helps facilitate smooth movement and prevents tissue damage.
C. Surrounds a tendon at the point where the tendon crosses a joint describes a tendon sheath, which is distinct from a bursa.
D. Is the strong band of connective tissue that holds bones together at a synovial joint refers to a ligament, not a bursa.

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