Lec 7 - Musculature, Respiration, Speech

Question 1

jaw closing muscles

Answer 1

masseter, temporalis, medial pterygoid

Question 2

jaw opening muscles

Answer 2

anterior digastric, lateral pterygoid

Question 3

masseter OIN

Answer 3

O: zygomatic process/inferior border of zygomatic arch

I: angle of mandible, lateral ramus

N: masseteric nerve

Question 4

temporalis OIN

Answer 4

O: temporal fossa

I: coronoid process

N: temporal nerve

Question 5

medial pterygoid OIN

Answer 5

O: pterygoid fossa/medial surface of lateral pterygoid plate

I: ramus/angle of the mandible

N: medial pterygoid nerve

Question 6

lateral pterygoid inferior head OIN

Answer 6

O: lateral surface of lateral pterygoid plate

I: anterior neck of mandible

N: masseteric or buccal nerve

Question 7

lateral pterygoid superior head OIN

Answer 7

O: infratemporal fossa of greater wing of sphenoid

I: anterior neck of mandible

N: masseteric or buccal nerve

Question 8

digastric

Answer 8

O: posterior digastric on mastoid notch of temporal bone

I: lingual inferior border of the mandible via anterior digastric

N: posterior - facial nerve
anterior - nerve to mylohyoid which is a branch off V3

Question 9

muscle action potential across membrane

Answer 9

90 mv

Question 10

muscle action potential extracellularly

Answer 10

90 microvolts

Question 11

emg signal is attenuated at the skin by blank

Answer 11

1000

Question 12

electrical activity must be blank to be directly related to muscle force

Answer 12

calibrated

Question 13

jaw muscles are considered blank because they act together and share the same action

Answer 13

redundant

Question 14

these are seen in emg

Answer 14

recruitment, frequency,

Question 15

these are not seen in emg

Answer 15

length, velocity

Question 16

jaw jerk is blank synaptic and blank

Answer 16

mono, postural/protective

Question 17

current use of emg

Answer 17

studying bruxism