Muscles, Musles, Músculos, Misk Yo Flashcards
(550 cards)
Temporalis action
Elevate and retract the mandible.
Temporalis origin
Temporal fossa and fascia
Temporalis insertion
Coronoid process and ramus of the mandible.
Digastric action
Depress and retract the mandible
Elevates hyoid bone.
Digastric origin
Mastoid process
Digastric insertion
Inferior border of the mandible.
Platysma action
Depress the mandible
Tighten neck fascia
Draw down corner of the mouth.
Platysma origin
Fascia covering the superior pectoralis major
Platysma insertion
Base of the mandible
Skin of lower part of the face.
Masseter action
Elevates and protracts the mandible
Masseter origin
Zygomatic arch
Masseter insertion
Angle and ramus of the mandible
Sternocleidomastoid action
Unilaterally:
Laterally flex head and neck to the same side.
Rotate the head and neck to the opposite side.
Bilaterally:
Flex the neck
Assist to elevate the rib cage during inhalation
Sternocleidomastoid origin
Sternal head- manubrium
Clavicular head- clavicle
Sternocleidomastoid insertion
Mastoid process
Anterior Scalene action
Laterally flex the head and neck to the same side.
Rotate head and neck to the opposite side.
Elevate ribs during inhalation
Flex the head and neck.
Anterior Scalene origin
Transverse process of C3-C6
Anterior Scalene insertion
First rib.
Middle Scalene action
Laterally flex the head and neck to the same side.
Rotate head and neck to the opposite side.
Elevate ribs during inhalation.
Middle Scalene origin
Transverse process of C2-C7
Middle Scalene insertion
First rib
Posterior Scalene origin
TP of C6 & C7
Posterior Scalene insertion
Second rib
Medial Pterygoid action
Laterally deviate the mandible to the opposite side
Elevates, protracts the mandible.