Chapter 11 Axial Musculature
What muscle compresses and purses the lips?
orbicularis oris
what are the muscles that are involved in neck movement?
scalenes, sternoclediomastoid, splenius capitis
When someone nods their head, what movement is occurring at the neck?
Flexion/extension
what muscle is involved for extension at the torso?
erector spinae
What are the muscles that causes rotation of the torso?
external oblique internal oblique iliocostalis longissimus
Amanda has dimples. Dimples are an inheritable trait caused by a shortened muscle which leads to a small depression in the flesh, either one that exists permanently or one that forms in the cheeks when one smiles. Which muscle causes this effect?
zygomaticus major
what muscles cause depression of the mandible?
digastric
What muscle causes flexion of the neck?
sternocleidomastoid
Chewing mastication, what movement is occurring at the jaw?
depression/elevation
What muscle raises the upper lip?
levator labii superioris
Which muscle is an extensor of the neck?
splenius capitis
Which of the following muscles do NOT move the neck? scalenes sternoclediomastoid sternohyoid splenius capitis
sternohyoid
left; medial rectus
The right eye is moving _____ because of the ____ muscle.
The ____ muscle, named for its two bellies, opens the mouth.
digastric
The prime mover of spinal extension is the:
erector spinae
What muscles are involved in flexion of the torso?
rectus abdominis and psoas major
If you are working out abs and performing the russian twist, what movement occurs?
rotation
which muscles extends the torso? psoas major splenius capitis external oblique spinalis
spinalis
what are the muscles that causes lateral flexion (bending) of the torso? muscles contract to bend to opposite (left) side
external and internal oblique (anterior part) external and internal oblique (lateral part) quadratus lumborum
Which movement (forwards) occurs at the torso?
flexion
The largest muscle of the upper back is the:
trapezius
A muscle that aids in chewing without moving the mandible?
buccinator