Multiple Choice
During a prenatal exam, Connie is told there is a chance her child has hydrocephalus. She knows the prefix hydro means water. Where is she expecting there to be excess water in her child's body?
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1. Introduction to Anatomy & Physiology
Anatomical Terms for the Head and Neck
Multiple Choice
Which feature is unique to the axis vertebra in the human skeleton?
A
Dens (odontoid process)
B
Vertebral foramen
C
Transverse foramen
D
Spinous process
Verified step by step guidance1
Understand the context: The axis vertebra, also known as C2, is the second cervical vertebra in the human spine. It plays a crucial role in allowing the head to rotate.
Identify the unique feature: The axis is distinguished by a specific structure called the dens or odontoid process, which is not found in other vertebrae.
Compare with other features: The vertebral foramen, transverse foramen, and spinous process are common features found in many vertebrae, not unique to the axis.
Explain the function of the dens: The dens acts as a pivot that allows the atlas (C1) and the skull to rotate around the axis, enabling head movement.
Conclude the uniqueness: The presence of the dens is what makes the axis vertebra unique compared to other vertebrae in the human skeleton.
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