BIO 290 JMU EXAM 1 Q&A ELABORATION STUDY GUIDE
WITH COMPLETE SOLUTION!! { ORIGINS, INSERTIONS,
ACTIONS, AND INNERVATION OF MAJOR MUSCLES}
Q: Where does the splenius muscle originate?
A: It begins from the cervical and upper thoracic spinous processes as well as the
nuchal ligament.
Q: What is the origin of the iliocostalis, longissimus, and spinalis muscles (the
erector spinae group)?
A: They arise from the posterior sacrum, the iliac crest, the sacrospinous ligament,
and the spinous processes of the lumbar and sacral vertebrae.
Q: Where does the semispinalis muscle originate?
A: From the transverse processes of the cervical and thoracic vertebrae.
Q: What is the origin of the multifidus muscle?
A: It comes from the transverse processes of vertebrae along the entire spinal
column.
Q: Where does the splenius muscle insert?
, A: Into the cervical transverse processes, the occipital bone, and the mastoid
process.
Q: Where does the iliocostalis muscle insert?
A: Onto the cervical transverse processes and the angles of the ribs.
Q: What is the insertion of the longissimus muscle?
A: It attaches to thoracic and cervical transverse processes and the mastoid process.
Q: Where does the spinalis muscle insert?
A: Into the spinous processes of cervical and thoracic vertebrae.
Q: Where does the semispinalis muscle insert?
A: Into spinous processes 6–7 vertebrae above its origin and the occipital bone.
Q: What is the insertion of the multifidus muscle?
A: Into spinous processes located 2–4 vertebrae above its origin.
WITH COMPLETE SOLUTION!! { ORIGINS, INSERTIONS,
ACTIONS, AND INNERVATION OF MAJOR MUSCLES}
Q: Where does the splenius muscle originate?
A: It begins from the cervical and upper thoracic spinous processes as well as the
nuchal ligament.
Q: What is the origin of the iliocostalis, longissimus, and spinalis muscles (the
erector spinae group)?
A: They arise from the posterior sacrum, the iliac crest, the sacrospinous ligament,
and the spinous processes of the lumbar and sacral vertebrae.
Q: Where does the semispinalis muscle originate?
A: From the transverse processes of the cervical and thoracic vertebrae.
Q: What is the origin of the multifidus muscle?
A: It comes from the transverse processes of vertebrae along the entire spinal
column.
Q: Where does the splenius muscle insert?
, A: Into the cervical transverse processes, the occipital bone, and the mastoid
process.
Q: Where does the iliocostalis muscle insert?
A: Onto the cervical transverse processes and the angles of the ribs.
Q: What is the insertion of the longissimus muscle?
A: It attaches to thoracic and cervical transverse processes and the mastoid process.
Q: Where does the spinalis muscle insert?
A: Into the spinous processes of cervical and thoracic vertebrae.
Q: Where does the semispinalis muscle insert?
A: Into spinous processes 6–7 vertebrae above its origin and the occipital bone.
Q: What is the insertion of the multifidus muscle?
A: Into spinous processes located 2–4 vertebrae above its origin.
