Last Week Lectures

Contralateral

movement is created on the opposite side from the muscle

Ipsilateral

movement is created on the same side as the muscle

Bilateral

___ movements of neck muscles always create flexion/extension

Neck flexion

bilateral movements of SCM

Ipsilateral NLB, contralateral neck rotation

unilateral movements of SCM

Neck flexion

bilateral movements of anterior scalene

Ipsilateral NLB

unilateral movements of anterior scalene

None

bilateral movements of middle scalene

Ipsilateral NLB

unilateral movements of middle scalene

Neck extension

bilateral movements of posterior scalene

Ipsilateral NLB

unilateral movements of posterior scalene

Neck extension

bilateral movements of splenius capitis

Ipsilateral NLB, ipsilateral neck rotation

unilateral movements of splenius capitis

Trunk extension

bilateral movements of erector spinae

Ipsilateral TLB

unilateral movements of erector spinae

None

bilateral movements of quadratus lumborum

Ipsilateral TLB

unilateral movements of quadratus lumborum

Trunk flexion

bilateral movements of rectus abdominis

None

unilateral movements of rectus abdominis

Trunk flexion

bilateral movements of external oblique

Ipsilateral TLB, contralateral trunk rotation

unilateral movements of external oblique

Trunk flexion

bilateral movements of internal oblique

Ipsilateral TLB, ipsilateral trunk rotation

unilateral movements of internal oblique

Compression of abdominal contents

function of transverse abdominis

Modified hinge

subclass of the TMJ joint

Condyle of mandible & mandibular fossa of temporal bone

landmarks that make up the TMJ joint

Articular disc

piece of cartilage that serves as a shock absorber at the TMJ joint

Digastric (AB), platysma

muscles that create TMJ depression (2)

Medial pterygoid, temporalis, masseter

muscles that create TMJ elevation (3)

Medial pterygoid, lateral pterygoid, masseter

muscles that create TMJ protraction (3)

Digastric (PB), temporalis

muscles that create TMJ retraction (2)

10

number of costal cartilages per side

Volume, pressure

an increase in ___ in the thoracic cavity creates a decrease in ___

Exhalation

___ is a relatively passive process, muscle wise (tissue recoil)

Superiorly, anteriorly

inhalation causes the upper ribs and sternum to move ___ and ___ (pump handle)

Anterior-posterior, lateral

inhalation causes an increase in the ___ and ___ diameters of the rib cage

Superiorly, laterally

inhalation causes the lower ribs to move ___ and ___ (bucket handle)

Caliper motion, lateral

movement created by ribs 11 & 12 is a ___; this increases the ___ diameter of the rib cage

External intercostals

muscles that pull up on the ribs and sternum to increase the volume of the thoracic cavity

Contracts, flattens

during inhalation, the diaphragm ___ and ___

Superior-inferior

contraction of the diaphragm increases the ___ diameter of the rib cage

75/25

in normal inspiration, the split between the work of the diaphragm and external intercostals is:

Pec minor, scalenes, SCM, serratus anterior

4 muscles that help with deep inspiration (in ROF)

Pressure

exhalation increases the ___ in the thoracic cavity

Internal intercostals, rectus abdominis, obliques, transversus abdominis, quadratus lumborum

5 muscles involved in forced expiration