Face Flashcards
What are the layers of the Scalp?
Skin
Connective tissue (deep/dense)
Aponeurotic layer
Loose connective tissue
Pericranium (attached to skull)
What are the branches of facial nerve that innervate muscles of facial expression?
Temporal
Zygomatic
Buccal
Mandibular
Cervical
What is the sensory division of Facial nerve (CN VII)?
Sensory of facial nerve is to the anterior 2/3 of the tongue
Parasympathetic fibers go to the lacrimal gland and submandibular and sublingual glands
What does cutaneous senstation to the face?
Trigeminal nerve CN V
Ant and post Cervical rami
What is Bell’s palsy?
Bell’s palsy is a type of facial paralysis that results in an inability to control the facial muscles on the affected side.
- Symptoms can vary from mild to severe.
- They may include muscle twitching, weakness, or total loss of the ability to move one or rarely both sides of the face.
- Other symptoms include drooping of the eyelid, a change in taste, pain around the ear, and increased sensitivity to sound.
- Loss of tone in orbicularis oculi is a problem because lacrimal fluid is not spread over the cornea preventing adequate lubrication
Which layer of the scalp can infection spread through easily?
- The loose connective tissue layer is the danger area because pus or blood spreads easily in it
- Infection in this layer can also pass into the cranial cavity through small emissary veins–>which pass through parietal foramen in the calvaria and reach intracranial structures such as meninges
Why do cuts in the scalp bleed so profusely?
Arteries course within the connective tissue layer.
- arteries anastomsis freely with adjacent arteires and across the midline with the contralateral artery
- arterial walls are firmly attached to the dense connective tissue in which the arteries are embedded, limiting their ability to constict when cut
- so you bleed a lot in the scalp
Explain the blood supply to the face
Most are branches of external carotid
- Facial artery: provides the major arterial supply to face
- Superficial temporal artery: smallest terminal branch of carotid
- Transv facial: arises with in parotid gland and crosses face superficial to masseter
Lymph from the scalp face and neck drains into the superficial ring of lymph nodes. What is this ring?
Submental
Submandibular
Parotid
Mastoid
Occipital