Flexor Digiti Minimi Brevis Flashcards

Explore the flexor digiti minimi brevis muscle through its attachments, innervation, blood supply, actions, and plantar relationships.

Card 1 of 24Question

Where is the flexor digiti minimi brevis muscle located?

On the lateral side of the sole of the foot, near the fifth metatarsal.

In This Section

1. Where is the flexor digiti minimi brevis muscle located?

On the lateral side of the sole of the foot, near the fifth metatarsal.

2. Which layer of plantar foot muscles contains the flexor digiti minimi brevis?

The third plantar muscle layer.

3. Is the flexor digiti minimi brevis an intrinsic or extrinsic muscle of the foot?

An intrinsic muscle of the foot.

4. What is the primary bony origin of the flexor digiti minimi brevis?

The plantar surface of the base of the fifth metatarsal.

5. Which ligament contributes to the origin of the flexor digiti minimi brevis?

The long plantar ligament.

6. Where does the flexor digiti minimi brevis insert?

The plantar aspect of the base of the proximal phalanx of the fifth toe.

7. What is the primary action of the flexor digiti minimi brevis?

Flexion of the fifth toe at the metatarsophalangeal joint.

8. Which joint is directly crossed by the flexor digiti minimi brevis tendon?

The fifth metatarsophalangeal joint.

9. Which nerve innervates the flexor digiti minimi brevis?

The superficial branch of the lateral plantar nerve.

10. Which spinal nerve roots contribute to the innervation of the flexor digiti minimi brevis?

Primarily S2 and S3.

11. The lateral plantar nerve supplying the flexor digiti minimi brevis originates from which major nerve?

The tibial nerve.

12. Which artery primarily supplies the flexor digiti minimi brevis?

Branches of the lateral plantar artery.

13. Which major artery gives rise to the lateral plantar artery?

The posterior tibial artery.

14. Which veins drain blood from the flexor digiti minimi brevis region?

Plantar veins accompanying the lateral plantar arterial branches.

15. Which two muscles share the third plantar layer with the flexor digiti minimi brevis?

Flexor hallucis brevis and adductor hallucis.

16. Which plantar compartment contains the flexor digiti minimi brevis?

The lateral plantar compartment.

17. Which muscle lies superficial to the flexor digiti minimi brevis?

Abductor digiti minimi.

18. What is the relationship of the flexor digiti minimi brevis to the fifth metatarsal?

It runs along the plantar surface of the fifth metatarsal toward the little toe.

19. How does the flexor digiti minimi brevis differ functionally from the abductor digiti minimi?

It primarily flexes the fifth toe, whereas abductor digiti minimi primarily abducts it.

20. What is the accessory role of the flexor digiti minimi brevis during standing and walking?

It assists fifth-toe stabilization during weight-bearing.

21. Which longitudinal arch may receive minor muscular support from the flexor digiti minimi brevis?

The lateral longitudinal arch of the foot.

22. Which small muscle may be associated with the flexor digiti minimi brevis as an anatomical variation?

Opponens digiti minimi, which may appear as a distinct or partially separated muscle slip.

23. What motor deficit may result from injury to the nerve supplying the flexor digiti minimi brevis?

Weakness of fifth-toe flexion at the metatarsophalangeal joint.

24. What structural muscle change may develop following chronic denervation of the flexor digiti minimi brevis?

Muscle atrophy with possible fatty replacement.