Lumbrical muscles of the hand

The video discusses the lumbrical muscles of the hand, highlighting their unique origin from tendons rather than bones, and their role in finger movement. The muscles are innervated by the median and ulnar nerves, enabling flexion and extension of the fingers. The video concludes with a call to explore more resources on Kenhub.

What is the origin of the lumbrical muscles in the hand?

• Bony structures

• Tendons

• Muscle fibers

• Ligaments

Which nerve is responsible for the innervation of the 1st and 2nd lumbrical muscles?

• Radial nerve

• Musculocutaneous nerve

• Ulnar nerve

• Median nerve

What movement do the lumbrical muscles facilitate in the fingers?

• Flexion in the metacarpophalangeal joints and extension in the interphalangeal joints

• Flexion in the interphalangeal joints

• Extension in the metacarpophalangeal joints

• Abduction of the fingers

What is the primary function of the lumbrical muscles in hand grip?

• To extend the wrist

• To provide a strong grip by flexing the metacarpophalangeal joints

• To abduct the fingers

• To rotate the thumb

What additional resources does Kenhub offer for learning anatomy?

• Live tutoring sessions

• Interactive quizzes and articles

• Printed textbooks

• Virtual reality simulations