Posterior Shoulder Muscles Anatomy

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

Which muscle is primarily responsible for the retraction of the scapula?

Latissimus dorsi
Rhomboid major (correct)
Supraspinatus
Teres major

Which nerve innervates the latissimus dorsi muscle?

Thoracodorsal nerve (correct)
Dorsal scapular nerve
Axillary nerve
Spinal accessory nerve

Which of the following muscles is NOT part of the posterior shoulder muscles?

Infraspinatus
Teres minor
Serratus anterior (correct)
Supraspinatus

What is the primary action of the teres minor muscle?

<p>Lateral rotation of the arm (C)</p> Signup and view all the answers

Which two muscles share innervation from the lower subscapular nerve?

<p>Teres major and subscapularis (D)</p> Signup and view all the answers

Flashcards

Trapezius Muscle

A large, diamond-shaped muscle located in the upper back that helps with shoulder elevation, rotation, and stabilization.

Levator Scapulae Muscle

A smaller, triangular muscle located in the neck that helps with scapular elevation.

Latissimus Dorsi Muscle

A broad, flat muscle that covers the lower back and helps with extension, adduction, and internal rotation of the arm.

Spinal Accessory Nerve

A nerve that supplies the trapezius muscle, providing motor innervation for shoulder elevation, retraction, and depression.

Signup and view all the flashcards

Dorsal Scapular Nerve

A nerve that supplies the rhomboid muscles, enabling scapular retraction and downward rotation.

Signup and view all the flashcards

Study Notes

Posterior Shoulder Muscles

Muscles: Trapezius, levator scapulae, rhomboid major, rhomboid minor, latissimus dorsi, teres major, supraspinatus, infraspinatus, teres minor, subscapularis
Nerves: Spinal accessory, spinal nerves (dorsal scapular and ventral rami), dorsal scapular nerve, thoracodorsal nerve, lower subscapular nerve, suprascapular nerve, axillary nerve, upper subscapular nerve, lower subscapular nerve

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge of the posterior shoulder muscles and their associated nerves. This quiz covers important muscles such as the trapezius, latissimus dorsi, and their innervating nerves. Perfect for students of anatomy and physiology!