Deep Back Muscles (Division, Origin, Insertion, Function)

Video Description

Content 0:00 Introduction 0:08 Division of the Back Muscles 0:34 Division of the Deep Back Muscles 2:38 Suboccipital Muscles 3:42 System of Short Muscles 4:37 Transversospinal System 7:21 Spinospinal System 8:09 Spinotransverse System 10:18 Summarize ------------------------------- 💎Channel membership: https://www.youtube.com/channel/UCEr7pkSXVsHcBLLBcJAGV-Q/join 📷 Follow my IG: https://www.instagram.com/taimtalksmed/ 💝 Donation link: https://www.buymeacoffee.com/taimtalksmed ------------------------------- Deep Muscles of the Back 3rd Layer 1. Suboccipital Muscles 2. System of Short Muscles 2nd Layer 3. Transversospinal System 1st Layer (Superficial) 4. Spinospinal System 5. Spinotransverse System 1. Suboccipital Muscles System of deep muscles of the neck Rectus Capitis Posterior Minor musculus rectus capitis posterior minor - O: Posterior Tubercle of Atlas (C1) - I: Occipital Bone below inferior nuchal line Rectus Capitis Posterior Major musculus rectus capitis posterior major - O: Spinous Process of Axis (C2) - I: Occipital Bone - inferior nuchal line Obliquus Capitis Superior musculus obliquus capitis superior - O: Transverse process of Atlas (C1) - I: Occipital Bone - inferior nuchal line Obliquus Capitis Inferior musculus obliquus capitis inferior - O: Spinous Process of Axis (C2) - I: Transverse Process of Atlas (C1) 2. System of Short Muscles System of short muscles connecting adjacent vertebrae Interspinales musculi interspinales - Mostly Developed in Cervical and Lumbar region - Mostly Developed in Cervical and Lumbar region - O: Spinous Process of vertebra below - I: Spinous Process of vertebra above Intertransversarii musculi intertransversales - Mostly Developed in Cervical region - Between transverse processes - O: Transverse Process of vertebra below - I: Transverse Process of vertebra above 3. Transversospinal System Transverse process of lower vertebra to spinous process of upper vertebra Rotatores musculi rotatores - Deep muscles located in thoracic vertebra - Long Rotatores musculi rotatores longi ○ O: Transverse process of vertebra below ○ I: Spinous Process of 2 vertebra above - Short Rotatores musculi rotatores breves - Considered a part of the 3rd layer ○ O: Transverse process of vertebra below ○ I: Spinous Process of 1 vertebra above Multifidi musculi multifidi - Fills the space lateral to spinous process - More distinctive at the lumbar region - Short Multifidi musculi multifidi breves ○ O: Transverse Process of vertebra below ○ I: Spinous Process of 2 vertebra above - Long Multifidi musculi multifidi longus ○ O: Transverse Process of vertebra below ○ I: Spinous Process of 3 vertebra above Semispinalis musculi semispinales - 3 Parts - Semispinalis Thoracis musculi semispinalis thocis ○ O: Transverse Process of T6-T11 ○ I: Spinous Process of C6-T4 - Semispinalis Cervicis musculi semispinalis cervicis ○ O: Transverse Process of T1-T6 ○ I: Spinous Process of C2-C5 - Semispinalis Capitis musculi semispinalis capitis ○ O: Transverse Process of C4-T6 ○ I: Occipital Bone – Between inferior and superior nuchal line 4. Spinospinal System From the spinous process of lower vertebra to spinous process of upper vertebra Spinalis musculus spinalis - 2 Parts - Spinalis Cervicis musculus spinalis cervicis ○ O: Spinous Process of C6-T2 ○ I: Spinous Process of C2-C4 - Spinalis Thoracis musculi semispinalis thoracis ○ O: Spinous Process of T10-L3 ○ I: Spinous Process of T1-T8 5. Spinotransverse System From the spinous process of lower vertebra to transverse process of upper vertebra Longissimus musculus longissimus - 3 Parts - Longissimus Thoracis musculus longissimus thoracis ○ O: Dorsal Surfac of Sarum Iliac Crest Spinous process of T11-L5 ○ I: - Transverse Process of T1-T12 - 2nd/3rd - 12th Rib - Longissimus Cervicis musculus longissimus cervicis ○ O: Transverse Process of T1-T6 ○ I: Transverse Process of C2-C5 - Longissimus Capitis musculus longissimus capitis ○ O: Transverse Process of C4-T4 ○ I: Mastoid Process Splenius musculus splenius - 2 Parts - Splenius Capitis musculus splenius capitis ○ O: Spinous Process of C3-T3 + Nuchal Ligament ○ I: mastoid Process - Splenius Cervicis musculus longissimus capitis ○ O: Spinous Process of T3-T6 ○ I: Transverse Process of C1-C2 Ileocostal musculus ileocostalis - Ileocostalis lumborum musculus iliocostalis lumborum ○ O: Thoracolumbar fascia, Iliac crest, dorsal sacrum ○ I: 6 lower ribs - Ileocostalis thoracis musculus iliocostalis thoracis ○ O: 6 lower ribs ○ I: 6 upper ribs - Ileocostalis cervicis musculus iliocostalis cervicis ○ O: 6 upper ribs ○ I: Transverse Process of C4-C6