Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
1. A lesion in the facial nerve would cause what symptoms?
What is this called? |
1. Diminution of forehead and nasolabial wrinkling
2. Eyebrow, lower eyelid and corner of mouth would sag 3. Tearing from eye 4. Saliva dribbling from corner of mouth Facial Palsy (Bell's Palsy) |
|
|
2. Why is the face flattened on the involved side?
Why does food get caught between the cheek and gum? Why is there tearing from the eye? |
Gravity - no muscle tension to resist gravity
Buccinator muscle is loss Loss of orbicularis oculi muscle so there is gravitational eversion of the lower eyelid |
|
|
3. What other muscle would be paralyzed in facial palsy?
What symptoms would be produced? |
Stapedius
Hyperacusis |
|
|
4. What are the branches of the facial nerve?
|
1. Temporal
2. Zygomatic 3. Buccal 4. Mandibular 5. Cervical |
|
|
5. How would you test the integrity of each branch?
|
1. Zygomatic
-forcibly close eyes 2. Temporal -raise eyebrows / wrinkle forehead 3. Cervical -flare cervical skin or elevate pectoral skin |
|
|
6. How would you test the integrity of each branch?
|
4. Buccal
-elevate upper lip showing teeth -smile -pucker/purse lips -blow out cheeks 5. Mandibular -depress lower lip showing teeth -pucker/purse lips -blow out cheeks |
|
|
7. What sensory deficits can be present on the face if V2 in injured?
|
Loss of sensation in skin over the upper jaw and bwt the mouth and eye
|
|
|
8. What sensory deficits could be present on the face if V1 was injured?
|
1. Loss of sensation in skin over nose, forehead and anterior scalp
2. Loss of sensation in cornea |
|
|
9. What are the sensory and motor limbs of the corneal (blink) reflex?
|
Sensory = V1
(ophthalmic of trigeminal) Motor = VII (facial) |
|
|
10. What sensory deficits could be present on the face if V3 is injured?
|
Loss of sensation in skin over the mandible from the chin, along the body and ramus anterior to external ear and over posterior temporal area
U-shaped dermatome |
|
|
11. What are the cutaneous branches of the trigeminal nerve?
|
1. Supraorbital (V1)
-supply anterior scalp and forehead 2. Infraorbital (V2) 3. Mental (V3) 4. Long Buccal (V3) 5. Auriculotemporal (V3) -TMJ, anterior wall of external auditory meatus and external surface of anterior half of tympanic membrane |
|
|
12. What does the parotid duct penetrate?
What does it cross? |
Penetrate - buccinator
Crosses - masseter **enters oral cavity adjacent to maxillary 2nd molar |
|
|
13. How would you locate the carotid pulse and bifurcation?
|
Sternocleidomastoid
Pulse is deep Bifurcation is at C4 vertebrae level |
|
|
14. What is the general course of the vertebral artery?
|
1. Branch off subclavian
2. Through foramen magnum 3. Supply posterior part of brain -brain stem -cerebellum -posterior cerebral hemisphere |
|
|
15. What is the general course of the internal carotid artery?
What does it supply? What are its branches? |
Through temporal bone and cavernous sinuses
1. Supply anterior and lateral cerebral hemispheres 2. Orbit 3. Medial forehead 4. Superior nasal cavity Branches -anterior cerebral arteries -middle cerebral arteries -ophthalmic branch (orbit) |
|
|
16. What does the external carotid artery supply?
|
1. Face (facial artery)
2. Remainder of scalp 3. Neck and cranial dura Branches -Facial artery -Superficial temporal artery -Middle meningeal artery -superior thyroid artery -lingual artery -maxillary artery |
|
|
17. What is a subclavian steal?
Why is a laryngostomy safer than a tracheostomy? |
When subclavian is blocked, it steals blood from vertebral artery or circle of willis
Deprive brain from blood when using upper limbs Between thyroid and cricoid cartilage so there are no blood vessels to hit |
|
|
18. What is the lymphatic drainage of the head and neck?
|
1. Superior deep cervical nodes
(jugular nodes) 2. Inferior deep cervical nodes (supraclavicular or scalene nodes) **final nodes before emptying into the thoracic duct |
