Anatomy NEET MDS Practice Test

1

Anatomy

Which cranial nerve constricts the pupil?
1). CN V1
2). CN II
3). CN IV
4). CN III

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

CN III provides parasympathetic fibers via the Edinger-Westphal nucleus, ciliary ganglion, and sphincter pupillae. CN II is the afferent limb of the light reflex.

2

Anatomy

Which of the following muscles has two separate functions in mandibular movement

1) Masseter
2) Geniohyoid
3) External(lateral)pterygoid
4) Buccinator

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

The external (lateral) pterygoid muscle has two primary functions: it assists in depressing the mandible (opening the mouth) and in moving the mandible forward (protrusion). This dual function distinguishes it from other muscles of mastication, which primarily elevate the mandible.

3

Anatomy

The glossopharyngeal nerve exits via:
1) Jugular foramen
2) Foramen ovale
3) Stylomastoid foramen
4) Hypoglossal canal

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

The glossopharyngeal nerve exits the skull through the jugular foramen, along with the vagus and accessory nerves.

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