Question

question 12
match the following:
prompts
1 this bone shapes the posterior wall of the pelvis.
2 the fused rudimentary tailbone.
3 the bone that articulates with the occipital condyles.
4 these bones are the smallest and lightest vertebrae.
5 allows the head to nod \yes.\
6 a cushionlike shock absorber of two parts: a nucleus pulposus and annulus fibrosus.

Explanation:

Identify pelvic and tailbone structures

Using the Vertebral Column Anatomy knowledge point

• Prompt 1: The bone forming the posterior wall of the pelvis is the sacrum.
• Prompt 2: The fused, rudimentary tailbone is the coccyx.

Analyze upper cervical vertebrae

• Prompt 3: The bone that articulates directly with the occipital condyles of the skull is the first cervical vertebra, known as the atlas (C1).
• Prompt 4: The smallest and lightest vertebrae in the vertebral column are the cervical vertebrae (C3-C7, and C1-C2 generally).

Determine head movement and disc structure

• Prompt 5: The joint between the occipital condyles and the atlas (atlanto-occipital joint) allows the head to nod "yes", which is a function of the atlas (C1).
• Prompt 6: A cushionlike shock absorber consisting of a nucleus pulposus and annulus fibrosus is an intervertebral disc.

Answer:

No.	Problem	Answer
2	The fused rudimentary tailbone.	Coccyx
3	The bone that articulates with the occipital condyles.	Atlas (C1)
4	These bones are the smallest and lightest vertebrae.	Cervical vertebrae
5	Allows the head to nod "yes."	Atlas (C1)
6	A cushionlike shock absorber of two parts: a nucleus pulposus and annulus fibrosus.	Intervertebral disc