Flexor pollicis brevis muscle

This video tutorial explores the flexor pollicis brevis, a muscle in the thumb's thinner eminence. It covers the muscle's anatomy, including its origin, insertion, and the unique double innervation pattern due to embryogenesis. The tutorial also explains the muscle's primary functions, such as thumb flexion and adduction. Viewers are encouraged to use Kenhub for more interactive learning resources.

What is the primary location of the thinner musculature?

• On the ulnar side of the palm

• On the palmar side of the fingers

• On the radial side of the palm

• On the dorsal side of the hand

Which bones are involved in the origin of the deep head of the flexor pollicis brevis?

• Trapezoid and triquetrum

• Pisiform and hamate

• Capitate and trapezium

• Scaphoid and lunate

What is unique about the innervation of the flexor pollicis brevis?

• It is innervated by the radial nerve only

• It receives double innervation

• It is innervated by the musculocutaneous nerve

• It has no innervation

What is the main function of the flexor pollicis brevis?

• Opposition of the thumb

• Abduction of the thumb

• Flexion and adduction of the thumb

• Extension of the thumb

What additional resources are promoted at the end of the video?

• Textbooks and journals

• Live anatomy classes

• Interactive quizzes and articles

• Podcasts and webinars