Axial Region PT1 LD Flashcards
What are the connective tissues of Temporomandibular joint
Lateral Temporomandibular joint ligament
Sphenomandibular Ligament
Stylomandibular Ligament
Fibrous Capsule
Articular Disc
Arthrokinematics during retrusion of the mandible
The mandibular condyle and disc translate posteriorly and slightly superior against the mandibular fossa
UNILATERAL CONTRACTION OF SCM
IPSILATERAL LATERAL FLEXION
C/L AXIAL ROTATION
Bilateral contraction of Splenius muscle ACTION
Cervical Extension
Bilateral contraction of Sternocleidomastoid Action
CERVICAL FLEXION(MID TO LOWER)
MINIMAL EXTENSION (UPPER CERVICAL SPINE)
UNILATERAL contraction of right Splenius muscle action
RIGHT LATERAL FLEXION
LEFT AXIAL ROTATION
Ipsilateral contraction of left Scalene muscle action
Lateral flex of neck to left and axial rotation of next to left
Innervation of the muscle that lifts the upper eyelid to open the eyes
CN III
Part of Posterior Triangle of Neck
Anterior – posterior border of the SCM
Posterior – anterior Border of trapezius
Inferior – middle third of the clavicle
SUBDIVISIONS
- Occipital Triangle
- Supraclavicular Triangle
Contents of Posterior Triangle (arteries)
subclavian artery
superficial cervical artery
suprascapular artery
occipital artery
Contents of Posterior Triangle veins
external jugular vein and its tributaries
subclavian vein
Contents of Posterior Triangle Nerves
brachial plexus
spinal part of the accessory nerve branch of the cervical plexus
Arthrokinematics during protrusion of the mandible
The mandibular condyle and disc translate anteriorly and slightly inferior against the mandibular fossa
What muscles contract during retrusion of the mandible?
Posterior fibers of temporalis, geniohyoid, mylohyoid, digastric
Arthrokinematics during lateral excursion of the mandible to the left:
The left mandibular condyle forms a pivot point in the left mandibular fossa while the right mandibular condyle and articular disc rotates slightly anteriorly and medially on the right mandibular fossa
Most superficial layer of the scalp, which is thick, hair bearing, and contains numerous sebaceous glands:
Skin
articular disc to its respective surfaces and shapes: INTERMEDIATE
CONCAVE INFERIORLY, GENERALLY FLAT SUPERIORLY
articular disc to its respective surfaces and shapes: POSTERIOR
CONVEX SUPERIOR, CONCAVE INFERIOR
ANTERIOR REGION
NEARLY FLAT INFERIORLY, SLIGHT CONCAVE SUPERIORLY
Suprahyoid muscles DAGASASM
Digastric
Geniohyoid
Stylohyoid
Mylohyoid
Infrahyoid mm I-TOSS
Thyrohyoid
Omohyoid
Sternohyoid
Sternothyroid
What muscles contract during protrusion of the mandible?
Masseter, medial pterygoid, lateral pterygoid
What muscles contract during lateral excursion of the mandible to the left:
(L) masseter and temporalis and (R) medial and lateral pterygoid
Articular Surfaces of Temporomandibular Joint
Mandibular condyle and the mandibular fossa of the temporal bone
Action of Temporalis Muscle, posterior fibers
Protrusion
muscles of the craniocervical region to its action on the atlanto-occipital joint: Rectus capitis lateralis
Atlanta-occipital joint lateral flexion
muscles of the craniocervical region to its action on the atlanto-occipital joint: Rectus capitis posterior major
Atlanta-occipital joint extension and lateral flexion
Rectus capitis anterior action on Atlanto-occipital joint
Atlanta-occipital joint flexion and lateral flexion
Depression of Mandible muscles
Primary muscle: Lateral pterygoid;
Secondary muscles: digastrics, geniohyoids, and mylohyoids
