Upper Limb Anatomy and Nerve Functions

This video tutorial provides a comprehensive overview of the anatomy of the upper limb, focusing on the arm and forearm. It covers the brachial plexus, intertubercular groove, surgical neck, and extensor compartment, along with nerve identification and potential injuries. The tutorial also includes muscle identification, highlighting the trapezius, deltoid, biceps, and triceps muscles. The video serves as a revision tool and self-assessment resource, allowing viewers to pause and reflect on the material presented.

What is the primary function of the axillary artery in the upper limb?

• To supply blood to the heart

• To supply blood to the brain

• To supply blood to the upper limb

• To supply blood to the lower limb

Which nerve is a branch of the lateral cord of the brachial plexus?

• Axillary nerve

• Ulnar nerve

• Radial nerve

• Musculocutaneous nerve

What structure is located in the intertubercular groove of the humerus?

• Tendon of the long head of the biceps

• Tendon of the pectoralis major

• Tendon of the triceps

• Tendon of the deltoid

Which muscle is associated with the surgical neck of the humerus?

• Trapezius muscle

• Pectoralis major

• Latissimus dorsi

• Deltoid muscle

What is the primary action of the extensor digiti minimi muscle?

• Flexion of the little finger

• Extension of the little finger

• Abduction of the little finger

• Adduction of the little finger

Which nerve supplies the extensor digiti minimi muscle?

• Radial nerve

• Ulnar nerve

• Axillary nerve

• Median nerve

What is the consequence of an injury to the radial nerve?

• Wrist drop

• Loss of sensation in the thumb

• Loss of sensation in the little finger

• Inability to flex the elbow

Which artery accompanies the radial nerve in the spiral groove?

• Brachial artery

• Axillary artery

• Ulnar artery

• Profunda brachii artery

Which muscle is located at the back of the neck and is triangular in shape?

• Trapezius muscle

• Pectoralis major

• Deltoid muscle

• Latissimus dorsi

What is the origin of the long thoracic nerve?

• C8, T1

• C1, C2, C3

• C3, C4, C5

• C5, C6, C7