PRAC.3

Question 1

Answer 1

M. nasolabialis/Levator nasolabialis

Origin: Maxilla

Insertion: Edge of upper lip on external naris

Action: Dilate nostrils, raise upper lip

Question 2

Answer 2

N. infraorbitalis

• Ex n. maxillaris (CN-V₂) ex n. trigeminus (CN-V)
• Exits from foramen infraorbitale with radiating branches
• Sensory nerve to the muzzle

Question 3

Answer 3

N. buccalis

• Ex n. mandibularis (CN-V₃) ex n. trigeminus (CN-V)
• Sensory nerve to mucous membrane and skin of cheek
• Can be traced with the deep facial vein, slightly deeper

Question 4

Answer 4

Nn. mentalis

• Ex n. alveolaris mandibularis ex n. mandibularis (CN-V₃) ex n. trigeminus (CN-V)
• Branches from the foramina mentalia
• Sensory nerve to the lower lip

Question 5

Answer 5

V. facialis

• Ex v. linguofacialis ex v. jugularis externa

Question 6

List the branches of v. facialis

Answer 6

• V. profunda faciei
• V. angularis oculi
• V. nasalis dorsalis
• V. nasalis lateralis
• V. labialis inferior
• V. labialis superior
• V. submentalis
• V. infraorbitalis

Question 7

Answer 7

V. profunda faciei

Question 8

Answer 8

V. angularis oculi

Question 9

Answer 9

V. nasalis dorsalis

Question 10

Answer 10

V. infraorbitalis

Question 11

Answer 11

V. labialis superior

Question 12

Answer 12

V. labialis inferior

Question 13

Answer 13

Gl. zygomatica

• Beneath the eye
• Partially covered by zygomatic arch
• M. masseter must be cut