The rest of week 1 Flashcards
Iliocostalis Origin
median sacral crest, posterior surface sacrum, spinous process L and lower T, medial part iliac crest
Iliocostalis Insertion
angles of lower ribs and transverse process of C
Iliocostalis Innervation
dorsal rami of lower cervical nerves
Iliocostalis Action
Unilateral: Laterally flex vertebral column to the same side
Bilateral: Extend vertebral column and head, stabilize vertebral column
Iliocostalis Arterial Supply
dorsal branches of posterior intercostal and subcostal arteries
Longissimus Inferior Attachment
Median Sacral crest, posterior surface of sacrum, medial part of iliac crest, SP lumbar and lower thoracic
Longissimus Superior Attachment
Between the tubercles and angles of ribs, TP of thoracic and cervical vertebrae, and mastoid process
Longissimus Innervation
Dorsal Rami of lower cervical nerves
Longissimus Action
Unilateral: Laterally flex vertebral column to the same side
Bilateral: Extend vertebral column and head, stabilize vertebral column
Longissimus Arterial Supply
Vertebral Artery, Deep Cervical artery, Occipital Artery and Transverse Cervical Artery
Spinalis Inferior Attachment
Median Sacral crest, posterior surface of sacrum, medial part of iliac crest, SP lumbar and lower thoracic
Spinalis Superior Attachment
spinous process of T and C
Spinalis Innervation
dorsal rami of lower Cervical nerves
Spinalis Action
unilateral - lateral flex vertebral column to same side; bilateral - extends vertebral column and head and stabilize vertebral column
Spinalis Arterial Supply
dorsal branches posterior intercostal arteries, deep cervical artery, muscular branches of vertebral artery
Serratus Posterior Superior Origin
SP of C7-T3
Serratus Posterior Superior Insertion
Superior borders 2-5th rib
Serratus Posterior Superior Innervation
Ventral rami T2-T5
Serratus Posterior Superior Action
Elevates ribs 2-5, inspiration
Serratus Posterior Superior Arterial Supply
Posterior intercostal arteries
Serratus Posterior Inferior Origin
SP of T11-L2
Serratus Posterior Inferior Insertion
inferior border 9th-12th rib
Serratus Posterior Inferior Innervation
Ventral Rami of T9-T12
Serratus Posterior Inferior Action
Depresses ribs 9-12, Expiration
Serratus Posterior Inferior Arterial Supply
Posterior Intercostal artery, subcostal arteries
Trapezius Origin
Superior nuchal line, ligamentum nuchae, SP C7-T12
Trapezius Insertion
Lateral 1/3 of the clavicle, spine of scapula, and acromion
Trapezius Innervation
Spinal Accessory Nerve (CN XI)
Trapezius Action
Rotate scapula to tilt glenoid cavity superiorly, elevate, retract, and depresses scapula
Trapezius Arterial Supply
Transverse Cervical Artery and Occipital Artery