Deep back muscles

This tutorial covers the identification and functions of deep back muscles, including the splenius, erector spinae, transversal spinalis, and suboccipital muscles. It explains the differences between superficial and deep back muscles, focusing on their innervation and actions. The tutorial also highlights the importance of posture and proprioception in these muscle groups.

What is the primary function of deep back muscles?

• Support and move the upper limb

• Assist in breathing

• Support and move the vertebral column

• Facilitate digestion

Which muscle group is known for its bandage-like appearance?

• Splenius

• Transversal spinalis

• Erector spinae

• Suboccipital

What is the primary action of the splenius muscles when they contract bilaterally?

• Lateral flexion of the spine

• Rotation of the torso

• Extension of the head and neck

• Flexion of the neck

Which muscle is the longest among the erector spinae group?

• Iliocostalis

• Longissimus

• Spinalis

• Multifidus

What is the primary role of the erector spinae muscles?

• Assisting in breathing

• Maintaining posture

• Rotation of the head

• Flexion of the spine

Which muscle group arises from the transverse process and attaches to a super adjacent spinous process?

• Splenius

• Erector spinae

• Transversal spinalis

• Suboccipital

What is the primary action of the transversal spinalis muscles?

• Rotation of the head

• Maintaining posture

• Extension of the arms

• Flexion of the spine

Which structure is located within the suboccipital triangle?

• Brachial plexus

• Jugular vein

• Vertebral artery

• Carotid artery

What is the innervation source for the deep back muscles?

• Ventral Rami

• Dorsal Rami

• Cranial nerves

• Sympathetic trunk

Which muscle group is primarily responsible for proprioception in the vertebral column?

• Transversal spinalis

• Erector spinae

• Suboccipital

• Splenius