DO DO Anatomy and Physiology 2

Question 1

Which cranial nerve is most closely associated with craniosacral mechanics due to its broad autonomic influence?

Accepted Answer

CN X (Vagus)

Answer

The vagus nerve (CN X) is closely influenced by cranial base mechanics and carries parasympathetic signals to thoracic and abdominal organs.

Question 2

The cisterna chyli is important in osteopathic lymphatic treatment because of which role?

Accepted Answer

It is the main collecting reservoir for lymph from the lower body, emptying into the thoracic duct

Answer

The cisterna chyli collects lymph from the lower extremities and abdomen and passes it into the thoracic duct for return to circulation.

Question 3

Lumbar zygapophyseal (facet) joint orientation primarily allows which type of spinal motion?

Accepted Answer

Flexion and extension (sagittal plane motion)

Answer

Lumbar facets are oriented in the sagittal plane, permitting flexion/extension while significantly limiting axial rotation.

Question 4

The pelvic splanchnic nerves (S2–S4) provide which type of innervation to pelvic organs?

Accepted Answer

Parasympathetic innervation

Answer

The pelvic splanchnic nerves from S2–S4 carry parasympathetic fibers to the bladder, rectum, and reproductive organs.

Question 5

The occipito-atlantal (OA) joint primarily permits which cervical motion?

Accepted Answer

Flexion and extension (the 'yes' nodding motion)

Answer

The OA joint (occiput on atlas) is shaped for flexion/extension (nodding yes), while the AA joint below primarily permits rotation.

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