971. Inferior alveolar nerve is a branch of :

A. Maxillary nerve
B. Mandibular nerve(anterior division)
C. Mandibular nerve(posterior division) *
D. Facial nerve

972. All of the following air sinuses open into the middle meatus of the lateral wall of nose except :

A. Frontal
B. Maxillary
C. Sphenoidal *
D. Middle ethmoidal

973. All of the following are layers of the scalp except :

A. Skin and connective tissue
B. Aponeurosis
C. Endosteal layer of dura *
D. Pericranium

974. Nasolacrimal duct opens into :

A. Superior meatus
B. Inferior meatus *
c. Middle meatus
D. Holla ethmoidalis

975. At the Kiesselbach’s (Little’s ) area, anastomosis is formed between the following arteries :

A. Descending palatine and tonsillar branches of Pharyngeal
B. Ascending palatine and Ascending Pharyngeal
C. Lateral branches of posterior ethmoidal and middle meningeal
D. Septal branches of sphenopalatine and superior labial *

976. Optic nerve enters the orbit through :

A. Superior orbital fissure
B. Inferior orbital fissure
C. Optic canal *
D. Foramen rotundum

977. Structures passing through foramen ovale includes all except :

A. Lesser petrosal nerve
B. Mandibular nerve
C. Middle meningeal artery *
D. An emissary vein

978. All the following nerves are sensory to scalp except :

A. Supratrochlear
B. Supraorbital
C. Lesser occipital nerve
D. Dorsal radius of the first cervical spinal nerve *

979. All of the following are condensations of the deep cervical fascia of neck except :

A. Pretracheal fascia
B. Prevertebral fascia
C. Investing layer
D. Sphenomandibular ligament *

980. The superior ophthalmic vein is drained into the :

A. External jugular vein
B. Superior petrosal sinuses
C. The inferior petrosal sinuses
D. The cavernous sinus *