Lab Exam 3 Flashcards
Name this muscle
Buccinator
What is the origin of the buccinator muscle
Mandible & maxilla
What is the insertion of the buccinator
Angle of the mouth
What is the action of the buccinator
Compresses the cheek
Name this muscle
Depressor anguli oris
What is the origin of the depressor anguli oris
Mandible
What is the insertion of the depressor anguli oris
Angle of the mouth
What is the action of depressor anguli oris
Depress angle of the mouth
Name this muscle
Zygomaticus major
What is the origin of the zygomaticus major
Zygomatic bone
What is the insertion of zygomaticus major
Angle of mouth
Name this muscle (L)
Risorius
What is the origin of risorius
Fascia of the masseter
What is the insertion of risorius
Angle of the mouth
What is the action of risorius
Draws angle of mouth to side
Name this muscle (A)
Masseter
What is the origin of the masseter (H)
Zygomatic arch
What is the insertion of the masseter
Ramus of mandible
What is the action of the masseter
Elevates mandible (closes jaw)
Name this muscle (H)
Temporalis
What is the origin of the temporalis
Parietal bone
What is the insertion of the temporalis
Coronoid process of mandible
What is the action of temporalis
Elevates mandible (closes jaw)
Name this muscle (I)
Occipitalis
What is the origin of the occipitalis (F)
Superior nuchal line
What is the insertion of the occipitalis
Epicranial aponeurosis
What is the action of occipitalis
Tenses scalp
Name this muscle (G)
Frontalis
Name the origin of the frontalis
Epicranial aponeuroses
What is the insertion of the frontalis
Skin of forehead
What is the action of the frontalis
Raises eyebrows
Wrinkles skin of forehead
Name this muscle (E & M are the same)
Platysma
What is the origin of the platysma
Fascia of chest
What is the insertion of the platysma
Mandible and skin of cheek
What is the action of platysma
Tenses skin of neck and depresses mandible
Name this muscle (F)
Orbicularis oculi
What is the origin of the orbicularis oculi (D)
Bony orbit
What is the insertion of the orbicularis oculi
Eyelids
What is the action of orbicularis oculi
Closes eyelids
Name this muscle (C)
Orbicularis oris
What is the origin of the orbicularis oris
Mandible/maxilla
What is the insertion of orbicularis oris
Lips
What is the action of orbicularis oris
Closes and purses lips
Name this muscle (N)
Sternocleidomastoid
What is the origin of the sternocleidomastoid
Manubrium and clavicle
What is the insertion of the sternocleidomastoid (G)
Mastoid process of temporal bone
What is the action of the sternocleidomastoid
Flexes & rotates cervical vertebral column
Name this muscle group
Erector spinae muscle group
Name the muscles of the erector spinae muscle group
A) spinalis group
B) longissimus group
C) iliocostalis group
What is the action(s) of the erector spinae group
Extends & laterally flexes vertebral column