Question

77) Pain experienced by Dr. Sumida due to an impacted wisdom tooth on the left side of the dentary bone is transmitted via a nerve that enters the lower jaw through the:

		mental foramen
		superior alveolar foramen
		dental foramen
		mandibular foramen
		Sumida foramen

76) Which of the following muscles is NOT a muscle of the mandibular arch, innervated by a branch of the trigeminal nerve (V)?

		mylohyoid
		masseter
		tensor tympani
		digastric, posterior belly
		temporalis

75) In an archaeological cranium, you notice that the internal acoustic meatus of the left petrous temporal bone is almost completely occluded (If you don't know what "occluded" means, you will have to look it up. ) by extra bone growth. The other cranial foramina appear normal. From this you deduce that the individual in question in life may have:

	A.	suffered paralysis of the left side masticatory muscles.
	B.	suffered paralysis of left side muscles of facial expression.
	C.	suffered partial or complete deafness in the left ear.
	D.	B & C
	E.	All of the above.

73) Which of the bones listed below is derived from components of the dermatocranium, splanchnocranium, and chondrocranium?

		occipital
		maxillary
		ethmoid
		temporal
		frontal

Answer 1

77) During dental implants, Repositioning the inferior alveolar nerve stems (ranch of mandibular nerve) is recommended by the oral surgeon, this allows the oral surgeons to place the implants while keeping a close eye on the position of the nerve bundle to avoid the case of implants coming in contact with the nerves. Wisdom tooth is attach to lingual nerve (branch of mandibular nerve).

So, the correct option is (d) MANDIBULAR FOREMEN.

76) Muscle of the mandibular arch, innervated by a branch of the trigeminal nerve:

* medial pterygoid

* lateral pterygoid

* masseter

* temporalis

* anterior belly of digastric

* mylohyoid

* tensor veli palatini

* tensor tympani.

So, the correct option is (d) digastric, posterior belly.

73) bones derived from components of the dermatocranium, splanchnocranium, and chondrocranium - CRANIAL BONES.

List of cranial bones: frontal bone, temporal bone, parietal bone, occipital bone, ethmoid bone, and sphenoid bone.

(Maxilla is facial bone.)

So, the required answer is - occipital, frontal, temporal , and ethmoid.