Muscles of the neck

Question 1

Platysma Rough origin

Answer 1

Subcutaneous fascia covering the pectoralis major and deltoid muscles

Question 2

Platysma Rough Insertion

Answer 2

Lower part of the mandible and subcutaneous fascia and muscles of the jaw and mouth

Question 3

Platysma Innervation

Answer 3

Cervial branch of facial nerve (CN VII)

Question 4

Platysma Action

Answer 4

Draws down the lower lip and angle of mouth, tenses skin of neck; helps depress mandible

Question 5

Sternocleidomastoid Origin

Answer 5

Sternal Head: Manubrium of sternum

Clavicular Head: Medial 3rd of superior border of clavicle

Question 6

Sternocleidomastoid insertion

Answer 6

Mastoid process of temporal bone and lateral 1/2 of superior nuchal line

Question 7

Sternocleidomastoid Innervation

Answer 7

Accessory Nerve (CN XI) and branches of cervical spinal nerve (C2-C4)

Question 8

Sternocleidomastoid Action

Answer 8

Unilateral contraction - lateral neck flexion to same side and rotation to opposite side

Bilateral contraction - Neck flexion; with head fixed assists in elevating the thorax during forced inspiration

Question 9

Anterior scalene Origin

Answer 9

Anterior tubercle of the transverse processes of C3-C6

Question 10

Anterior scalene Insertion

Answer 10

Scalene tubercle and upper surface of first rib

Question 11

Anterior scalene Innervation

Answer 11

Ventral Rami of C4-C7

Question 12

Anterior scalene Action

Answer 12

Elevation of first rib, lateral and forward flexion of neck

Question 13

Middle Scalene Origin

Answer 13

Posterior tubercles of the transverse process of C2-C7

Question 14

Middle Scalene Insertion

Answer 14

Upper surface of the first rib, posterior to groove for subclavian artery

Question 15

Middle Scalene Innervation

Answer 15

Ventral Rami of C3-C7

Question 16

Middle Scalene Action

Answer 16

Raises first Rib; lateral neck flexion

Question 17

Posterior Scalene Origin

Answer 17

Posterior tubercles of the transverse process of C4-C6

Question 18

Posterior Scalene Insertion

Answer 18

Superior surface of second rib

Question 19

Posterior Scalene Innervation

Answer 19

Ventral Rami C5-C7

Question 20

Posterior Scalene Action

Answer 20

Raises 2nd rib; lateral neck flexion

Question 21

Digastric Origin

Answer 21

Temporal bone

Question 22

Digastric Insertion

Answer 22

Mandible

Question 23

Digastric Innervation

Answer 23

Anterior Belly - Mandibular Nerve (CN V3)

Posterior Belly - Cervical Branch of the Facial Nerve (CN VII)

Question 24

Digastric Action

Answer 24

Elevates and steadies the hyoid bone during swallowing and speech; If hyoid is fixed, helps open the mouth and depresses the madible

Question 25

Stylohyoid Rough Origin

Answer 25

Styloid process of temporal bone

Question 26

Stylohyoid Rough Insertion

Answer 26

Body of hyoid bone at junction of greater cornu

Question 27

Stylohyoid Innervation

Answer 27

Cervical branch of facial nerve (CNVII)

Question 28

Stylohyoid Action

Answer 28

Elevates and retracts the hyoid elongating the floor of the mouth during swallowing

Question 29

Mylohyoid Rough Origin

Answer 29

Mylohyoid line of Mandible

Question 30

Mylohyoid Rough Insertion

Answer 30

Upper border of Hyoid bone and median raphe

Question 31

Mylohyoid Innervation

Answer 31

Mandibular nerve (CN V3)

Question 32

Mylohyoid Action

Answer 32

Elevates Hyoid bone and raises floor of mouth; together with opposite side, forms floor of mouth

Question 33

Geniohyoid Rough origin

Answer 33

Inferior Mental spine on inner surface of mandible

Question 34

Geniohyoid Rough insertion

Answer 34

Anterior surface of body of hyoid bone

Question 35

Geniohyoid Innervation

Answer 35

First Cervical Nerve (C1)

Question 36

Geniohyoid action

Answer 36

Pulls hyoid bone superiorly and anteriorly shortening the floor of the mouth; pulls mandible down and inwards when hyoid bone is fixed

Question 37

Sternohyoid Origin

Answer 37

Posterior aspect of sternoclavicular joint and manubrium of sternum

Question 38

Sternohyoid Insertion

Answer 38

lower margin of the body of the hyoid bone

Question 39

Sternohyoid Innervation

Answer 39

Ansa Cervicalis (c1-C3)

Question 40

Sternohyoid Action

Answer 40

Depresses hyoid bone after swallowing

Question 41

Omohyoid Rough Origin

Answer 41

Inferior belly: superior border of scapula medial to suprascaular notch Superior belly: Tendon of inferior belly near Sternocleidomastoid

Question 42

Omohyoid Rough Insertion

Answer 42

Inferior belly: Ends as a tendon (bound to clavicle by central tendon) Superior belly: Inserts on lower border of hyoid bone

Question 43

Omohyoid Innervation

Answer 43

Ansa Cervicalis (C1-C3)

Question 44

Omohyoid Action

Answer 44

Depresses and retracts the Hyoid bone.

Question 45

Sternothyroid Origin

Answer 45

Posterior surface of manubrium of sternum

Question 46

Sternothyroid Insertion

Answer 46

Oblique line on lamina of thyroid cartilage

Question 47

Sternothyroid Innervation

Answer 47

Ansa Cervicalis (C1-C3)

Question 48

Sternothyroid Action

Answer 48

Depresses Larynx

Question 49

Thyrohyoid Origin

Answer 49

Oblique line ont he lamina of the thyroid cartilage

Question 50

Thyrohyoid Insertion

Answer 50

Greater cornu and body of hyoid bone

Question 51

Thyrohyoid Innervation

Answer 51

First cervical Nerve (C1)

Question 52

Thyrohyoid Action

Answer 52

Depresses Hyoid; and elevates larynx if hyoid is fixed

Question 53

Extrinsic Muscles of the Larynx that Depresses the Larynx

Answer 53

1. Omohyoid 2. Sternohyoid 3. Sternothyroid

Question 54

Extrinsic Muscles of the Larynx that Elevators the Larynx

Answer 54

1. Digastric 2. Stylohyoid 3. Mylohyoid 4. Geniohyoid 5. Stylopharyngeus 6. Salpingopharyngeus 7. Palatopharyngeus

Question 55

Infrahyoid Muscles

Answer 55

1. Sternohyoid 2. Sternothyroid 3. Thyrohyoid 4. Superior belly of omohyoid

Question 56

Suprahyoid Muscles

Answer 56

1. Mylohyoid 2. Geniohyoid 3. Stylohyoid 4. Digastric

Question 57

Intrinsic Muscles of the tongue

Answer 57

1. Longitudinalis Superior 2. Longitudinalis Inferior 3. Transversus 4. Verticalis

Question 58

Extrinsic Muscles of the tongue

Answer 58

1. Genioglossus 2. Hyoglossus 3. Styloglossus 4. Palatoglossus

Question 59

Muscles of the Pharynx

Answer 59

1. Superior Constrictor 2. Middle Constrictor 3. Inferior Constrictor 4. Salpingopharyngeus 5. Stylopharyngeus 6. Palatopharyngeus

Question 60

Muscles of the Palate

Answer 60

1. Musuculus Uvulae 2. Tensor veli palatini 3. Levator Veli Palatini 4. Palatopharyngeus 5. Palatoglossus