Axilla

What joint is related superiorly to the axilla?

• Shoulder joint

• Glenohumeral joint

• Acromioclavicular joint

• Coracoacromial joint

Answer explanation

The shoulder consists of 2 joints: 1) glenohumeral joint 2)acromioclavicular joint

The joint thats directly related to the axilla is the glenohumeral joint.

Glenohumeral joint is between your humeral bone(arm) & glenoid fossa of scapula (shoulder).

Correct answer: glenohumeral joint

The lateral wall of your left axilla is facing the left side.

• TRUE

• FALSE

Answer explanation

Lateral is the area that is away from the midline of your body.

Lateral wall of left axilla is facing left.

While the lateral wall of your right axilla is facing the right.

Which wall of the axilla is non-muscular?

• Anterior wall

• Posterior wall

• Lateral wall

• Medial wall

Answer explanation

The lateral wall of axilla consists of only intertuberclar groove of humerus. (bone-not muscle)

Axillary sheath enclosed the neurovascular structures in the axilla at the DISTAL part.

• TRUE

• FALSE

Answer explanation

The axillary sheath enclosed the neurovascular structures at the PROXIMAL PART.

axillary sheath is the continuation of cervical fascia.

Image taken from

New Considerations in Brachial Plexus Anesthesia by William E Urmey, MD (Sciencedirect)

Enlargement of the axillary lymph node could indicate the following pathology... (choose more than 1)

• Infection

• Tumor/Cancer

• Autoimmune disease

• Parasite infestation

Answer explanation

Infections, tumor, primary or secondary cancer, parasite infestation, or AUTOIMMUNE DISEASE can cause lymph node enlargement.