Head and neck Flashcards
what is the occipital protuberance
lump at the back of the head found on the occipital bone
where is the styloid process
temporal bone
what are the layers of the scalp
skin, dense connective tissue, aponeurosis of the occipitofrontalis muscle, looser areolar connective tissue, periosteum
what is the anterior part of the scalp supplied by
branches of the trigeminal nerve
what is the posterior part of the scalp supplied by
greater and lesser occipital nerve
Greater occipital nerve is from ?
C2/3
lesser occipital nerve is from
C2
function of the orbiculares oculi
gently closes the eyeball
function of the occipital belly of occipitofrontalis
retracts the scalp
Function of the orbital part of the orbiculares oris
tightly closes eyelid ie winking
function of frontal belly of occipitofrontalis
protracts the scalp so wrinkles forehead and elevates the eyebrows
function of the buccinator
helps maintain food within the oral cavity
function of the platysma
depresses the mandible and tenses the sin on the neck and the chin
function of the orbicularis oris
closes the mouth and protrudes the lips, resists pressure when blowing
what innervates all the facial muscles
facial nerve
where does the facial nerve enter onto the side of the face
through the stylomastoid foramen
what are the two arteries that supply the face
facial artery and the superficial temporal artery
what are the facial and superficial temporal artery branches of?
external carotid artery
what is the path of the facial artery
winds around the inferior border of the mandible and then grooves the submandibular salivary gland before entering the side of the face
venous drainage of the face
facial and superficial temporal vein which drain into the retromandibular and then the internal jugular
what type of gland are the salivary glands
exocrine
where do secretions from the parotid gland go
parotid duct which emerges from the anterior border of the gland going through the master muscle and opens into the oral cavity near the second upper molar tooth
what structures pass through the parotid gland
facial nerve
external carotid artery
retromandibular nerve