BIO 290 JMU EXAM 1 2025 LATEST
UPDATE
Splenius origin - ANSWER Cervical and thoracic spinous processes
Nuchal ligament
Iliocostalis, Longissimus, and Spinalis origin - ANSWER Posterior sacrum
Iliac crest
Sacrospinous ligament
Spinous process of lumbar and sacral vertebrae
Semispinalis origin - ANSWER Transverse processes of cervical and thoracic vertebrae
Multifidus origin - ANSWER Transverse processes of all vertebrae
Splenius insertion - ANSWER Cervical transverse processes
Occipital bone
Mastoid process
Iliocostalis insertion - ANSWER Cervical transverse processes
Angles of ribs
Longissimus insertion - ANSWER Cervical and thoracic transverse processes
Mastoid process
Spinalis insertion - ANSWER Cervical and thoracic spinous processes
Semispinalis insertion - ANSWER Spinous processes 6-7 segments superior to origin
Occipital bone
Multifidus insertion - ANSWER Spinous processes 2-4 segments superior to origin
External intercostal origin and insertion - ANSWER Lower margin of rib to upper margin
of lower rib (obliquely forward and upward)
Internal intercostal and innermost intercostal origin and insertion - ANSWER Lower
margin of rib to upper margin of lower rib (obliquely forward and upward)
Transversus thoracis origin - ANSWER Body of sternum
Xiphoid process
Transversus thoracis insertion - ANSWER Costal cartilages 2-6
External oblique origin - ANSWER Outer surfaces of lower ribs
UPDATE
Splenius origin - ANSWER Cervical and thoracic spinous processes
Nuchal ligament
Iliocostalis, Longissimus, and Spinalis origin - ANSWER Posterior sacrum
Iliac crest
Sacrospinous ligament
Spinous process of lumbar and sacral vertebrae
Semispinalis origin - ANSWER Transverse processes of cervical and thoracic vertebrae
Multifidus origin - ANSWER Transverse processes of all vertebrae
Splenius insertion - ANSWER Cervical transverse processes
Occipital bone
Mastoid process
Iliocostalis insertion - ANSWER Cervical transverse processes
Angles of ribs
Longissimus insertion - ANSWER Cervical and thoracic transverse processes
Mastoid process
Spinalis insertion - ANSWER Cervical and thoracic spinous processes
Semispinalis insertion - ANSWER Spinous processes 6-7 segments superior to origin
Occipital bone
Multifidus insertion - ANSWER Spinous processes 2-4 segments superior to origin
External intercostal origin and insertion - ANSWER Lower margin of rib to upper margin
of lower rib (obliquely forward and upward)
Internal intercostal and innermost intercostal origin and insertion - ANSWER Lower
margin of rib to upper margin of lower rib (obliquely forward and upward)
Transversus thoracis origin - ANSWER Body of sternum
Xiphoid process
Transversus thoracis insertion - ANSWER Costal cartilages 2-6
External oblique origin - ANSWER Outer surfaces of lower ribs
