Deep muscles of the back

This tutorial explores the anatomy of the back muscles, focusing on the intrinsic muscles divided into layers: superficial, intermediate, deep, and deepest. It covers the specific muscles within each layer, their origins, insertions, innervations, and functions. The tutorial also discusses clinical aspects of back strain, its causes, symptoms, and prevention strategies. The content is structured to aid in understanding and memorizing the complex anatomy of the back muscles.

What are the two main groups of muscles that make up the intrinsic back muscles?

Describe the function of the splenius capitis muscle.

What are the three parts of the erector spinae muscle group?

Explain the innervation of the multifidus muscle.

What is the role of the intertransversarii muscles?

How does the bilateral contraction of the spinalis muscle affect the spine?

What are the common causes of back strain as mentioned in the text?

Describe the differences between acute and chronic back strain.

What preventive measures can be taken to avoid back strain?

List the muscles included in the deepest layer of the back muscles.