Podcast
Questions and Answers
Which anatomical structure serves as the sole point of attachment for the shoulder complex to the trunk?
Which anatomical structure serves as the sole point of attachment for the shoulder complex to the trunk?
- Acromioclavicular joint
- Sternoclavicular joint (correct)
- Coracoclavicular ligament
- Glenohumeral joint
Which of the following is the MOST accurate description of the shoulder girdle's primary function?
Which of the following is the MOST accurate description of the shoulder girdle's primary function?
- Providing a stable base for upper extremity movement. (correct)
- Housing and protecting the heart and lungs.
- Directly controlling movements of the humerus.
- Facilitating hand and finger dexterity.
Which of the following movements occurs when the scapula moves away from the midline?
Which of the following movements occurs when the scapula moves away from the midline?
- Retraction
- Depression
- Elevation
- Protraction (correct)
What type of movement is involved when the inferior angle of the scapula rotates laterally and upward?
What type of movement is involved when the inferior angle of the scapula rotates laterally and upward?
During a shoulder shrug, which movement of the scapula is primarily involved?
During a shoulder shrug, which movement of the scapula is primarily involved?
Which of the following bony landmarks is located on the scapula?
Which of the following bony landmarks is located on the scapula?
Besides the Acromioclavicular joint, which is the other joint that directly involves the clavicle?
Besides the Acromioclavicular joint, which is the other joint that directly involves the clavicle?
The trapezius muscle is responsible for multiple movements of the scapula. Which of the following is NOT a function of the trapezius?
The trapezius muscle is responsible for multiple movements of the scapula. Which of the following is NOT a function of the trapezius?
What is the collective name for the muscles that directly attach to the scapula?
What is the collective name for the muscles that directly attach to the scapula?
Which of the following muscles protracts the scapula?
Which of the following muscles protracts the scapula?
If a person is performing a rowing exercise, pulling their elbows back towards their body, what scapular movement is primarily occurring?
If a person is performing a rowing exercise, pulling their elbows back towards their body, what scapular movement is primarily occurring?
Which muscle is primarily responsible for downward rotation of the scapula?
Which muscle is primarily responsible for downward rotation of the scapula?
What action at the shoulder girdle is primarily enabled by the coordinated action of the upper trapezius, lower trapezius, and serratus anterior?
What action at the shoulder girdle is primarily enabled by the coordinated action of the upper trapezius, lower trapezius, and serratus anterior?
Which of the following muscles attaches to the clavicle?
Which of the following muscles attaches to the clavicle?
If a person has a weakened or paralyzed serratus anterior muscle, what scapular movement will be most difficult for them to perform?
If a person has a weakened or paralyzed serratus anterior muscle, what scapular movement will be most difficult for them to perform?
Flashcards
Shoulder Girdle Function
Shoulder Girdle Function
The shoulder girdle provides the foundation for upper extremity function. It includes the scapula, clavicle and sternum as well as cartilage, ligaments and surrounding muscles.
Mobility vs. Stability
Mobility vs. Stability
Joints with high bony stability often have limited range of motion. The shoulder complex prioritizes mobility over bony stability, resulting in a large range of motion.
Shoulder Girdle Definition
Shoulder Girdle Definition
The shoulder girdle refers to the clavicle and scapula. It connects the upper extremity to the trunk and provides stability for movements of the shoulder joint.
Sternoclavicular Joint
Sternoclavicular Joint
Signup and view all the flashcards
Movements of the Shoulder Girdle
Movements of the Shoulder Girdle
Signup and view all the flashcards
Scapular Spine
Scapular Spine
Signup and view all the flashcards
Scapula Landmarks
Scapula Landmarks
Signup and view all the flashcards
Shoulder Girdle Joints
Shoulder Girdle Joints
Signup and view all the flashcards
Shoulder Ligaments
Shoulder Ligaments
Signup and view all the flashcards
Posterior Scapular Muscles
Posterior Scapular Muscles
Signup and view all the flashcards
Anterior Scapular Muscles
Anterior Scapular Muscles
Signup and view all the flashcards
Study Notes
- Upper extremity function relies on proper shoulder girdle and shoulder joint function
Bones, Cartilage, and Muscles
- Bones include the scapula, clavicle, and sternum
- Cartilage and ligaments
- Surrounding muscles
Mobility vs Stability
- Joints with increased bony stability tend to have small ranges of motion
- The shoulder complex lacks bony stability so it has a large range of motion
- The sternoclavicular joint is the only point of attachment to the trunk
- Stability relies on muscles and ligaments
Shoulder Girdle
- It refers to the clavicle and scapula
- Connects the upper extremity to the trunk
- Muscles of shoulder girdle help provide stability for movements of the shoulder joint
Movements of the Shoulder Girdle
- Elevation is the raising of the shoulder girdle
- Depression is the lowering of the shoulder girdle
- Retraction is the squeezing of the shoulder blades together
- Protraction is the rounding of the shoulders
- Upward rotation is when the glenoid cavity faces upwards
- Downward rotation is when the glenoid cavity faces downwards
Bones and Landmarks of the Shoulder Girdle
- Scapula
- Acromion
- Glenoid fossa and labrum
- Coracoid process
- Scapular Spine
- Clavicle is attached to the trunk at the sternum
Joints of the Shoulder Girdle
- Sternoclavicular: Connects the shoulder girdle to the trunk
- Acromioclavicular
- Coracoclavicular
Ligaments of the Shoulder Complex
- Acromioclavicular
- Sternoclavicular
Scapular Muscles (Posterior)
- All attach to the clavicle or scapula, none attach to the humerus
- Trapezius
- Upper
- Middle
- Lower
- Levator scapulae
- Rhomboids
- Minor
- Major
Scapular Muscles (Anterior)
- All attach to the clavicle or scapula, none attach to the humerus
- Pectoralis minor
- Subclavius
- Serratus anterior
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
