Week 4 (Head, Neck, Face) Flashcards
(7 Muscles)
Splenius Capitis Origin
SPs of C3 to T4
Splenius Capitis Actions (3)
Unilaterally:
1. Rotate head and neck same side
2. Laterally Flex head and neck same side
Bilaterally:
3. Extend head and neck
Splenius Capitis Insertion
Mastoid Process and lateral portion of Superior nuchal line
Splenius Cervicis Origin
SPs of T3 - T6
Splenius Cervicis Insertions
TPs of C1 - C3
Splenius Cervicis Actions
Unilaterally:
1. Rotate head and neck same side
2. Laterally Flex head and neck same side
Bilaterally:
3. Extend head and neck
Sternocleidomastoid Origin
Sternal Head: Top of manubrium
Clavicular Head: Medial 1/3rd of clavicle
Sternocleidomastoid Insertion
Mastoid process of temporal bone + lateral portion of superior nuchal line
Sternocleidomastoid Actions (4)
Unilaterally:
-Rotate head + neck opposite side
-Laterally flex head + neck same side
Bilaterally:
-Flex head and neck
-Assist to elevate ribcage during inhalation
Scalenes Origins
Anterior: TPs of C3-C6
Middle: TPs of C2-C7
Posterior: TPs of C6 + C7
Scalenes Insertions
Anterior: First Rib
Middle: First Rib
Posterior: Second Rib
Scalenes Actions (4)
Unilaterally:
-Flex head and neck same side
-Rotate head and neck opposite side
Bilaterally
-Flex head and neck
-Elevate ribs during inhalation
Suboccipitals Origins
Generally: C1 + C2
Suboccipitals Insertions
Generally: Occiput
Suboccipitals Actions (3)
-Rock and Tilt head to extension
-Ipsilaterally Rotate Head
-Laterally flex head
Masseter Origin
Zygomatic arch
Masseter Insertion
Angle and ramus of mandible
Masseter Actions (2)
Elevate the mandible (TMJ)
Assist to protract the mandible (TMJ)
Temporalis Origin
Temporal fossa and fascia
Temporalis Insertion
Top o’ Jaw
Temporalis Actions (2)
Elevate the mandible (TMJ)
Retract the mandible (TMJ)
