Deep Back Muscles – Back Muscles
About the Lecture
The lecture Deep Back Muscles – Back Muscles by Craig Canby, PhD is from the course Abdominal Wall with Dr. Canby.
Included Quiz Questions
Which muscles are innervated by the intercostal nerves and participate in respiratory movements? Select all that apply.
- Serratus posterior superior muscle
- Serratus posterior inferior muscle
- Splenius capitis muscle
- Levator scapulae muscle
- Rhomboid major muscle
Which erector spinae muscle can both originate from and insert onto ribs?
- Iliocostalis
- Longissimus
- Spinalis
- Multifidus
What is the nerve supply of the true back muscles?
- Posterior rami of the spinal nerves
- Anterior rami of the spinal nerves
- The lower intercostal nerves
- Anterior rami of the thoracic nerves
- Posterior rami of the thoracic nerves
Where is the insertion of the splenius capitis found?
- Mastoid process of the skull
- Occiput
- Maxillary process
- 1st cervical vertebra
- 2nd cervical vertebra
What is the action produced by the contraction of the bilateral longissimus muscles?
- Extension of the back
- Flexion of the neck
- Rotation of the neck
- Rotation of the back
- Flexion of the back
Which group of intrinsic back muscles includes the semispinalis capitis?
- Deep group
- Superficial group
- Intermediate group
- Paraspinal group
- Segmental group
Unilateral contraction of either of the two most lateral erector spinae muscles will result in which action?
- Lateral flexion to the ipsilateral side
- Lateral flexion to the contralateral side
- Axial rotation to the ipsilateral side
- Axial rotation to the contralateral side
- Flexion of the spine
Unilateral contraction of the spinalis muscle results in which action?
- Extension of the spine
- Lateral flexion to the ipsilateral side
- Lateral flexion to the contralateral side
- Flexion of the spine
- Rotation of the head to the ipsilateral side
The spinalis muscle spans across individual vertebrae connecting the entire spine by originating and inserting on which vertebral structure?
- Spinous process
- Transvers process
- Vertebral body
- Interspinous ligament
- Lamina
![Anatomy [Archive]](https://assets-cdn1.lecturio.de/lecture_collection/image_medium/87992_1693919964.png)
Author of lecture Deep Back Muscles – Back Muscles
Craig Canby, PhD
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