Musculus triceps brachii

The video tutorial provides an in-depth look at the triceps brachii muscle, known as the arm extensor. It explains the anatomical structure, detailing the three heads: long, medial, and lateral. Each head's origin and attachment are discussed, along with their roles in arm movement. The triceps' functions, including elbow extension and its innervation by the radial nerve, are highlighted. The tutorial concludes with a summary of the triceps' importance in arm mechanics.

What is the primary function of the triceps brachii muscle?

• Flexing the elbow

• Flexing the wrist

• Extending the elbow

• Rotating the shoulder

Which head of the triceps originates from the scapula?

• Broken medial

• Broken lateral

• Broken longum

• Broken distal

Where does the broken medial head of the triceps originate?

• Olecranon of the ulna

• Margo medialis of the humerus

• Infra glenoidal tubercle

• Radial nerve sulcus

Which nerve is responsible for the innervation of the triceps?

• Ulnar nerve

• Musculocutaneous nerve

• Median nerve

• Radial nerve

How does the triceps contribute to the protection of the elbow joint?

• By stabilizing the shoulder

• By connecting to the joint capsule

• By rotating the forearm

• By flexing the elbow