Human Anatomy: Anatomical Spaces Quiz

Triangle of Auscultation

• Borders: Trapezius muscle (medial), medial border of scapula (lateral), Latissimus dorsi muscle (inferior)
• Allows for easier auscultation of lung sounds due to thinner muscular layer
• Can be stretched and made accessible by extending the arm and rotating it externally

Cubital Fossa

• Borders: Pronator teres muscle (medial), Brachioradialis muscle (lateral), line between the epicondyles of the humerus (superior)
• Floor: Brachialis muscle, Supinator muscle
• Contents (from lateral to medial): tendon of biceps brachii muscle, brachial artery, median nerve
• Median cubital vein lies superficial to the main contents

Carpal Tunnel

• Formed by the deep arch formed by carpal bones and the flexor retinaculum (anteriorly)
• Structures passing through: 4 tendons of flexor digitorum profundus muscle, 4 tendons of flexor digitorum superficialis muscle, tendon of flexor pollicis longus muscle, median nerve

Anatomical Snuffbox

• Borders: abductor pollicis longus tendon and extensor pollicis brevis tendon (anterior), extensor pollicis longus tendon (posterior)
• Content: radial artery

Venous Return from the Upper Limbs

• Deep veins: accompany arteries with the same name, predominantly deep to the muscles, often two veins per artery (venae comitantes) in the forearm
• Superficial veins: located within the subcutaneous layer, just deep to the skin, originate from venous anastomoses on the dorsum of the hand
  • Cephalic vein
  • Basilic vein

Test your knowledge on the key anatomical spaces including the Triangle of Auscultation, Cubital Fossa, Carpal Tunnel, and Anatomical Snuffbox. Each section highlights their borders, contents, and clinical significance, providing a comprehensive look at these important areas. Perfect for students in anatomy or healthcare fields!