Ligaments of the humerus

Question

• Intertubercular groove
• Transverse humeral ligament
Movement of the shoulder girdle
✓ Elevation
✓ Depression
✓ Abduction (upward rotation and lateral tilt)
✓ Adduction (Downward rotation and medial tilt)
✓ Protraction
✓ Retraction
9
Fundamental movements and muscles of the shoulder girdle
Anterior Muscles of the shoulder
Six Muscles are primary involved in producing the fundamental movements of the
shoulder girdle.
• Three muscles are anatomically anterior to the shoulder girdle bones, and Three are
posterior to it.
The anterior muscles of the shoulder girdle include:
• Pectoralis minor
• Serratus anterior
• Subclavius
The posterior Muscles of the shoulder include:
• Levator scapulae
• Rhomboids
• Trapezius
10
Fundamental movement and muscles of the shoulder joint
The shoulder joint is classified as a triaxial joint because it is capable of movement in all
three cardinal planes:
• Flexion
• Extension
• Abduction
• Adduction
• Internal and External rotation
• Circumduction
Eleven major muscle function to accomplish the six fundamental ,movements
11
Muscles of the shoulder joint
Anterior muscles of the shoulder Joint
• Pectoralis major
• Coracobrachialis
• Biceps brachii
• Subscapularis
Superior Muscles of the shoulder Joint
• Deltoid
• Supraspinatus
Posterior Muscles of the shoulder joint
• Infraspinatus
• Teres Minor
12
Muscles of the shoulder joint
Rotator Cuff
• Four of the muscles of the shoulder joint insert on a musculotendinous structure running between
the facets located on the lesser and greater tuberosities of the humerus .
Inferior Muscles
• Latissimus dorsi (Lumbar vertebrae and ilium)
• Teres major
• Triceps brachii
Combined actions of the shoulder girdle and shoulder joint
• Scapulohumeral rhythm
Please generate questions based on the above information

Answer 1

Certainly! Here are some questions based on the information provided:

Questions about Ligaments and Movements

1. What ligament runs across the intertubercular groove of the humerus?
2. List all the movements of the shoulder girdle.
3. What is the difference between upward rotation and downward rotation of the shoulder girdle?

Questions regarding the Muscles of the Shoulder Girdle

4. Name the three anterior muscles of the shoulder girdle.
5. Which posterior muscles are involved in the movement of the shoulder girdle?
6. How do the functions of the anterior and posterior muscles differ in relation to the shoulder girdle?

Questions about the Shoulder Joint Movements

7. Why is the shoulder joint classified as a triaxial joint?
8. List the six fundamental movements of the shoulder joint.
9. Which muscles are primarily responsible for shoulder flexion and extension?

Questions concerning Specific Muscles

10. Identify the anterior muscles of the shoulder joint.
11. Which muscles are categorized as superior muscles of the shoulder joint?
12. Name the rotator cuff muscles and describe their function.

Questions about Muscle Interaction and Movement

13. What role does the latissimus dorsi play in shoulder joint movement?
14. Explain the concept of "scapulohumeral rhythm".
15. How do the combined actions of the shoulder girdle influence the overall mobility of the shoulder joint?

These questions can help assess an understanding of the anatomy and functions related to the shoulder girdle and shoulder joint.