Spinal Stabilization: Global vs. Deep Muscles

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

When comparing deep segmental muscles to global spinal muscles, which of the following statements is MOST accurate regarding their fiber type composition and proximity to the spine?

Global muscles are located closer to the spine and have a greater proportion of Type I muscle fibers for endurance.
Global muscles are located further from the spine and primarily utilize Type I muscle fibers for gross movement.
Deep segmental muscles are located further from the spine and are predominantly composed of Type II muscle fibers for power.
Deep segmental muscles are located closer to the spine and exhibit a higher percentage of Type I muscle fibers adapted for stabilization. (correct)

During movements requiring spinal stability, what is the typical sequence of muscle activation between deep and global spinal muscle systems?

Global muscles activate first to globally stabilize the spine, preceding activation of deep muscles for segmental control.
Global muscles activate first to generate power, followed by deep muscles for fine-tuning movement.
Deep and global muscles activate simultaneously to ensure coordinated spinal control.
Deep segmental muscles activate first to provide stability, followed by global muscles to produce larger movements and power. (correct)

A patient presents with lower back pain and demonstrates weakness in stabilizing individual lumbar vertebrae. Based on this information, which of the following muscles is MOST likely to be targeted for strengthening?

Multifidus (correct)
Iliopsoas
Rectus abdominis
External obliques

Which of the following muscles is classified as a GLOBAL muscle in the CERVICAL region and is primarily involved in larger movements of the neck rather than segmental stabilization?

<p>Sternocleidomastoid (SCM) (D)</p> Signup and view all the answers

What is the PRIMARY functional difference between global and deep spinal muscles in terms of their role in spinal movement and control?

<p>Global muscles are designed for producing larger movements and power across multiple segments, whereas deep muscles focus on segmental stabilization and control. (D)</p> Signup and view all the answers

Flashcards

Global Spinal Muscles

Superficial spinal muscles that cross multiple vertebral segments for larger movements.

Deep Segmental Spinal Muscles

Deep spinal muscles attaching to individual vertebrae, crucial for stabilizing spinal segments. High in type 1 muscle fibers.

Global Lumbar Muscles

Rectus abdominis, obliques, quadratus lumborum, erector spinae, and iliopsoas.

Global Cervical Muscles

Sternocleidomastoid (SCM), scalenes, levator scapulae, upper trapezius, and erector spinae.

Signup and view all the flashcards

Deep Lumbar Muscles

Transversus abdominis, multifidus, deep quadratus lumborum, and deep rotators.

Signup and view all the flashcards

Study Notes

Spinal stabilization refers to the ability of the spine to maintain its position against internal and external forces.
Characteristics of superficial/global spinal muscles and deep/segmental spinal muscles in the cervical and lumbar regions are important in spinal stabilization.

Characteristics of Global Muscles

Superficial, located further from the axis
Cross multiple vertebral segments
Produces larger movements and power through the spine

Characteristics of Deep Segmental Muscles

Deep, closer to the axis of motion
Attaches to each vertebral segment
Key role in stabilizing individual vertebrae and segments of the spine
High percentage of Type 1 muscle fibers

Global Muscles

Lumbar region: Rectus abdominis, Obliques, QL, erector spinae, and ilio psoas
Cervical region: SCM, scalene, levator scapulae, upper traps, and erector spinae
Contract second