Test 2 Tongue, Jaw, Eyes, Front Of Neck

Question 0

Inferior rectus

Answer 0

Origin: common tendinous ring
Insertion: inferior and central part of eyeballs
Action: moves eyeballs inferiorly and Medially (looking down an towards midline)
Innervation: oculomotor 3 nerve

Question 1

Superior rectus

Answer 1

Orgin: common tendinous ring
Insertion: superior and central part of eyeballs
Action: moves eyeballs superiorly and medially
Innervation: oculomotor (3) nerve

Question 2

Lateral rectus

Answer 2

Origin: common tendinous ring
Insertion: lateral side of eyeballs
Action: moves eyeballs laterally (abduction)
Innervation: abducens (6) nerve

Question 3

Medial Rectus

Answer 3

Origin: common tendinous ring
Insertion: medial side of eyeballs
Action: moves eyeballs medially (adduction)
Innervation: oculomotor (3) nerve

Question 4

Superior oblique

Answer 4

Orgin: sphenoid bone, superior and medial to the common tendinous ring in orbit
Insertion; eyeball between superior and lateral recti.
Action: moves eyeballs inferiorly (downward) and laterally (abduction)
Innervation: trochlear (4) nerve

Question 5

Inferior oblique

Answer 5

Origin: maxilla in floor of orbit
Insertion: eyeballs between inferior and lateral recti
Action: moves eyeballs superiorly and laterally (abduction)
Innervation: oculomotor (3) nerve

Question 6

Levator palpebrae superioris

Answer 6

Origin: roof of orbit
Insertion: skin and tarsal plate of upper eyelids
Action: elevates upper eyelids
Innervation: oculomotor (3) nerve

Question 7

Masseter

Answer 7

Origin: Maxilla and zygomatic arch
Insertion: angle and ramus of mandible
Action: elevates mandible (closing mouth)
Innervation: cranial nerve 5

Question 8

Temporalis

Answer 8

Orgin: temporal bone
Insertion: coroniod process and ramus of mandible
Action: elevates and retracts mandible (brings back)
Innervation: cranial nerve 5

Question 9

Medial pterygoid

Answer 9

Origin:medial surface of lateral portion of pterygoid process of sphenoid bone; maxilla
Insertion: angle and ramus of mandible
Action: Elevates and protracts mandible from side to side
Innervation: cranial nerve 5

Question 10

Lateral pterygoid

Answer 10

Orgin: greater wing and lateral surface of lateral portion of pterygoid process of sphenoid bone
Insertion: condyle of mandible, tmj
Action: protracts mandible, depresses mandible as in opening mouth and moves mandible side to side
Innervation: cranial nerve 5

Question 11

Genioglossus

Answer 11

Origin:mandible

Insertion: undersurface of tongue and hyoid bone

Action: depresses tongue and thrust it anteriorly (protraction)

Question 12

Styoglossus

Answer 12

Origin: styloid process of temporal bone

Insertion: side and undersurface of tongue

Action: elevates tongue and draws it posteriorly (retraction

Question 13

Hyglossus

Answer 13

Origin: greater horn and body of hyoid bone

Insertion: side of tongue

Action: depresses tongue and draws its sides

Question 14

Palatoglossus

Answer 14

Origin: anterior surface of soft palate

Insertion: side of tongue

Action: elevates posterior portion of tongue and draws soft palate down on tongue

Question 15

Digastric

Answer 15

Origin: anterior belly from inner side of inferior border of mandible; posterior belly from temporal bone
Insertion: body of hyoid bone via an intermediate tendon
Action: elevates hyoid bone. RMA: (reverse muscle action) depresses mandible as in opening mouth
Innervation: for anterior is 5 and post is 7

Question 16

Stylohyoid

Answer 16

Origin: styloid process
Insertion: body of hyoid bone
Action: elevates hyoid bone and draws it posteriorly

Question 17

Mylohyoid

Answer 17

Origin: inner surface of mandible
Insertion: body of hyoid bone
Action: elevates hyoid bone, draws hyoid bone and floor of mouth depress mandible

Question 18

Geniohyoid

Answer 18

Origin: inner surface of mandible
Insertion: body of hyoid
Action: elevates hyoid bone, draws hyoid and tongue anteriorly, depresses mandible

Question 19

Omohyoid

Answer 19

Origin: superior border of scapula and superior transverse ligenment
Insertion: body of hyoid bone
Action: depresses hyoid bone

Question 20

Sternohyoid

Answer 20

Origin:Medial end of clavicle and manubrium of sternum
Insertion: body of hyoid bone
Action: depresses hyoid bone

Question 21

Sternothyroid

Answer 21

Origin: manubrium of sternum
Insertion: thyroid cartilage of larynx
Action: depresses thyroid cartilage of larynx

Question 22

Thyrohypid

Answer 22

Origin: thyroid cartilage of larynx
Insertion: greater horn of hyoid bone
Action: depresses hyoid bone