Muscles Flashcards
Scalenus anterior/medial
O-Transverse processes of cervical vertebra
I- Rib 1
Action- Flex neck; elevate rib 1
N- Ventral rami of cervical spinal nerves
Sternocleidomastoid
O- 1)Manubrium of sternum
2)Medial 1/3 of clavicle
I-Mastoid process (temporal bone)
Action- Flex neck; rotate head to opposite side
N-Accessory Nerve (XI)
Omohyoid
O- Medial scapula
I- Hyoid
Action- Depresses hyoid bone
N- Ansa cervicalis
Sternohyoid
O- Manubrium of sternum
I- Hyoid
Action- Depresses hyoid
N- Ansa cervicalis
Sternothyroid
O- Manubrium of sternum
I- Thyroid cartilage
Action- Depresses thyroid cartilage; indirectly depresses hyoid and larynx
N- Ansa cervicalis
Thyrohyoid
O- Thyroid cartilage
I- Hyoid
Action- Depresses hyoid; elevates larynx
N- C1 (hitchiking branch on hypoglossal nerve)
Digastric
O- Mastoid notch (temporal bone); mandible
I- Hyoid
Action- Elevates hyoid; depresses mandible
N- V (anterior) & VII (posterior)
Stylohyoid
O-Styloid process of temporal bone
I- Hyoid
Action- Elevates hyoid
N- VII
Mylohyoid
O-Mandible
I- Hyoid
Action- Elevates hyoid; raises floor of mouth when swallowing
N- V3
Geniohyoid
O- Mandible (inner side)
I- Hyoid
A- Elevates hyoid; draws hyoid forward
N- C1 (hitch-hiking branch of hypoglossal)
Masseter
O- Zygomatic arch
I- Lateral side of ramus (mandible)
A- Elevate mandible
N- V3
Temporalis
O- Temporal bone
I- Coronoid process (mandible)
A- Elevates, retrudes mandible
N- V3
Medial Pterygoid
O- Lateral pterygoid plate; medial side
I- Medial side of ramus (mandible)
A- Elevates mandible
N- V3
Lateral Pterygoid
O- Lateral pterygoid plate (lateral side); greater wing of sphenoid
I- 1) Neck of mandible 2) Articular disc of TMJ
A- Depress; protrude mandible
N- V3
Longus colli
O-Transverse processes of lower cervical vertebra
I-Bodies of upper cervical vertebra
A- Flex neck
N- Cervical ventral rami
Longus capitis
O- Transverse processes of C3-C5
I-Occipital Bone
A-Flex neck
N- Cervical ventral rami
Rectus capitis anterior
O- Atlas
I- Occipital bone
A- Flex neck
N- Cervical vental rami
Rectus capitis lateralis
0- Atlas (transverse processes)
I- Occipital bone
A- Flex neck
N- Cervical ventral rami
Superior constrictor
O- Pterygomandibular raphe
I- Pharyngeal raphe
A-Constrict pharynx
N- X
Middle Constrictor
O- Hyoid bone
I- Pharyngeal raphe
A- Constrict larynx
N- X
Inferior Constrictor
O- Thryroid and cricoid cartilage
I- Pharyngeal raphe
A- Constrict pharynx
N- X
Stylopharyngeus
O- Styloid process of temporal bone
I- Thyroid cartilage
A- Raises pharynx and moves wall laterally
N- IX
Palatopharyngeus
O- Soft palate
I- Thyroid cartilage
A- Elevates pharynx and pulls down soft palate
N- X
Salpingopharyngeus
O- Auditory canal
I- Pharynx
A- Elevates pharynx
N- X
Rectus capitis posterior major
O- Axis
I- Occiptal bone
A- Extends head; rotates head (unilateral)
N- Suboccipital
Rectus capitis posterior minor
O- Atlas
I- Occipital bone
A- Extends head
N- Suboccipital
Obliquus capitis inferior
O- Axis
I- Atlas
A- Rotates head
N- Suboccipital
Obliquus capitis superior
O- Atlas
I- Occipital bone
A- Extends head
N- Suboccipital
Tensor palati
O-Auditory tube
I- Palatine aponeurosis
A- Tenses the soft palate
N- V3
Levator palati
O- Temporal bone auditory tube
I- Palatine aponeurosis
A- Elevates soft palate
N- X
Palatoglossus
O- Palatine aponeurosis
I- Sides of tongue
A- Draws soft palate down, raises tongue
N- X
*Palatoglossal arch overlies this muscle
Musculus uvulae
O- Palatine aponeurosis
I- Uvula
A- Raises the uvula
N- X
Genioglossus
O- Genial tubercle on mandible
I- Tongue (dorsal surface)
A- Protrudes tongue
N- XII
Hyoglossus
O- Greater/lesser horns of hyoid bone
I- Lateral side of tongue
A- Depresses tongue
N- XII
Styloglossus
O- Styloid process of temporal bone
I- Sides of tongue
A- Raises tongue superiorly and posteriorly
N- XII
Longitudinal intrinsic tongue muscle
-Shortens the tongue
Transverse intrinsic tongue muscle
Shortens the tongue
Vertical intrinsic tongue muscles
Flattens/broadens the tongue
