University:
Camosun College
Course:
BIOL 252 | Pathophysiology for Nursing 1
Academic year:

2024
Views:

38

Pages:

4
Author:

Aysha A.

Facial Muscles (IMD ONE'S) Orbicularis Oculi (Muscle orand eye) →has 3 ports T Orbital T Jalpebral lacrimal 1) Orbital- ariset from medial polpebral ligament, frontal port of marilla & frontal bone - It's fibres are elliptical loops on and around orbit of eye without mrruption Functions - Closes sye tightly to protect eye from sunlight & dust. Also used for winking. Dapebral Arise from modial palpebral ligament goes lateral to upper he tower eyelid to attach at lateral pulpebral digrat Function Clove yalid for during sheping / blinking. 3) Lacrimal- lies behind the lacrimal sac. Arise from postearios lactrimal fee crest locrimal to insert & lacrimal fancia forming sheat of sac pases labzally to both eyelids to laboral palpebras raphe. Function Dilata the Losac by exerting traction of fancia, help drainage of lacoimal fluid. Max contraction the muscles all come to medial e during Id age luterus lines are pomed permanently calls it crews Jeet- Note: All the meuscles of facial expression is supplied from and pharyngeal march → In daar animals the facial musch is derived from punniculus carnosus. -Facial nerve emerges out from cranial cavity por romen stytomartand foramen & enters the protid gland. to gives terminal branch. temporal zygomat + Quccal marginal cervel Muscle around the mouth Orbicularis aris →Forms greater port of the tips consist intrinsic & extrinsic move portion. → major extrinsic is composed of interlacing fibres of nuescles which converge around mouth for insestion into lips. Huy are, superficial stratum. (a) Levator anguli o's (c) Buccinator (mapor part) Intrinsic murch middle Stoaton (6) deprenor unguli onit Deep Strodden! the insitive steps to angle of mouth. supinchik maxillbry Mandibular →fores, ruming along the skine mucus membrane of lips & incisive slips which pan laterally into the lips from jonds. adjaant to insisor teeth & joth the periphoval Part of onticulorts oris. Nerve supply.. -Buccal branch of fascial neore Action Chasing, poubing, twisting, pussing of lips. Buccinator Musci.. (4) Outer surface of atreolar process of maxilla Opposite 3 molar teeth. 1) Fibrous tand Extend from plerygoid homulus to maxillory. tuberosity part (C) Dlery go mandibular raphe - from pterygoid hamulus to behind the lower 3 moden tooth of mandible. (8) outer surferce of alveolar process of mandible opposita 3 molar keth Insertion to uppes & lower lip in this manner. (a) upper fibre into upper lip. (1) lower 11 10 wer bcross omer. (c) Inters medicch dusxanat & as a result upper fibre of this group perm unner' into lower tip & lowe fion into Nerve Supply- Buccal branches. of fascial neove Action- 1) Hallens check against gum & teeth & prevents accumulat in restitule of mouth during mastigation. of food in vesti 2 For blowing the check, expelling als btw lig etch. blowing Frumpet