Musculus biceps brachii

The video tutorial explains the anatomy and functionality of the biceps brachii muscle. It covers the muscle's structure, including its long and short heads, and their origins. The tutorial details the tendon pathways and mechanical advantages, as well as the innervation by the musculo cutaneous nerve. It also describes the muscle's role in shoulder and elbow joint movements, such as abduction, adduction, flexion, and supination.

What is a common misconception about the biceps muscle?

• It is not involved in any joint movement.

• It is only found in the arm.

• It only has one head.

• It is located in the lower leg.

Where does the long head of the biceps brachii originate?

• On the humerus shaft

• On the clavicle

• On the supra glenoidal tubercle

• On the coracoid process

What is the mechanical advantage of the biceps brachii's arrangement?

• It allows for greater flexibility.

• It increases the muscle's length.

• It reduces the muscle's strength.

• It enables higher force with less tension.

Which nerve is responsible for the innervation of the biceps brachii?

• Musculocutaneous nerve

• Median nerve

• Radial nerve

• Ulnar nerve

What movement does the biceps brachii perform at the elbow joint?

• Adduction

• Abduction

• Flexion

• Extension