Neck and Superficial Thorax Muscles To Know Flashcards
Trapezius attachments
funicular portion of nuchal ligament to scapular spine
Rhomboideus
nuchal ligament and dososcapular ligament C2-T8 to scapular cartilage
Omotransversarius attachments
shoulder fascia to transverse processes of cervical vertebrea (c2-c4); if something is attaching to multiple CV its omotransversarius
Splenius attachments
funicular portion nuchal ligament from withers to poll, transverse processes of cervical vertebrea
subclavius attachments
often considered component of deep pectoral muscle; manubrium and sternum to supraspinatus and shoulder fascia; lies cr to cr aspect of scapula
Omohyoideus attachments
shoulder fascia to basihyoid
Sternocephalicus attachments
manubrium to cd border of mandible
Sternothyroideus attachments
manubrium to thyroid cartilgage
Sternohyoideus attachments
manubrium to basihyoid
Serratus ventralis attachments
transverse processes of cervical vertebrea c4-c7, first 8-9 ribs, dorso-medial scapula
Latissimus dorsi attachments
thoracolumbar fascia to teres major tuberosity (medial humerus); extrinsic limb muscle
Cutaneous trunci
innervated by lateral thoracic nerve; makes skin twitch in response insects/ stimuli ect
brachiocephalicus fx
extends the limbs if the limb fixed will pull head to the side
scaleneus attachments
1st rib to transverse process of CV
serratus ventralis fx
suspends trunk, raises neck when forelimb is fixed, supports inspiration
omohyoideus fx
synergistic with hyoid muscles to retract laryxn
rhomboideus fx
elevates neck and draws scapula dorsocranially; draws dorsal end of scapula toward midline
scalenus fx
flexes neck or bends it laterally
Longissimus attachments
transverse processes to skull, wing of atlas, other transverse processes
longisimus fx
flexes neck or bends it laterally
semispinalis capitus attachments
CV and transverse processes of first 8 thoracic vertebrea of skull (part of transversospinalis muscle group)
epaxial medial to lateral
transversospinalis, longisimus, iliocostalis
semispinalis is a named type of which epaxial muscle
transverso spinalis
iliocostalis
long white tendons attach to ribs, sacrum -> cd cervical neck
longus muscles
longus Colli and longus capitus
Longus colli attachments
transverse process of CV and bodies of thoracic vertebrea to body of CV, other transverse processes, and ventral atlas
Longus colli fx
flex neck laterally
Longus capitus attachments
transverse processes of C3-C5 to base of skull
Longus captius fx
flex neck laterally, elevate the head and neck as it bends laterally
sternohyoideus fx
retract hyoid
sternothyroideus fx
retract hyoid
sternthyroideus and sternohyoideus relatioship
sternothyroideus is lateral to sternohyoideus
sternocephalicus attachments
manubrium to cd angle of mandible
sternocephalicus fx
pulls head from side to side or up and down/ flex head and neck or move head and neck laterally
Latissimus dorsi fx
digging muscle, retract limb, gallop
trapezius fx
elevates shoulder and can move it craniodorsal or caudodorsal
Cutaneous colli
component of platysma muscle; arises at manubrium blends into superficial fascia, crosses distal 1/3 of neck; can -> issues raising ext jug
Pectoral muscles
superficial pectoral muscle (transverse portion and descending portion); deep pectoral muscle; deep pectoral is deep to superfical
superficial pectoral muscle attachments
sternum and medial forelimb
superficial pectoral muscle fx
adduction of limb; can protract or retract limb and part of ventral sling musculature
deep pectoral muscle attachments
sternum, greater and lesser tubercle of the humerus
deep pectoral muscle fx
can retract the limb and stabilize the shoulder
subclavius fx
tablize shoulder, suspend trunk
Splenius fx
extend and elevate head, bends head and neck laterally
omotransversarius fx
extends limb or bends neck laterally
brachiocephalicus attachments
crest of humerus to mastoid process of skull
scalenus attachments
1st rib to transverse process of cervical vertebrea
sternothyroideus attachments
manubrium to thyroid cartilage
