Central plantar muscles of the foot (3D)

The video explores the anatomy and functions of the central plantar muscles of the foot, including the flexor digitorum brevis, quadratus plantae, lumbricals, plantar interossei, and dorsal interossei. It details their origins, insertions, and roles in foot movement, such as flexion, extension, adduction, and abduction. The video also covers the nerves involved in muscle innervation and provides a mnemonic to remember muscle functions.

What is the primary reason the central plantar muscles are named 'central'?

• They are located on the dorsal side of the foot.

• They are the largest muscles in the foot.

• They are sandwiched between the medial and lateral plantar muscles.

• They are located near the toes.

Which muscle is the most superficial in the central plantar group?

• Plantar Interossei

• Flexor Digitorum Brevis

• Lumbricals

• Quadratus Plantae

How many heads does the quadratus plantae muscle have?

• One

• Three

• Four

• Two

From where do the lumbrical muscles originate?

• Calcaneal tuberosity

• Flexor digitorum longus tendon

• Metatarsal bones

• Plantar aponeurosis

What is the unique feature of the dorsal interossei compared to the plantar interossei?

• They are located in the second layer.

• They have two heads.

• They do not attach to the extensor hood.

• They are unipennate.

Which joints do the central plantar muscles primarily act upon?

• Metatarsophalangeal and interphalangeal joints

• Hip joints

• Knee joints

• Ankle joints

Which nerve innervates the flexor digitorum brevis?

• Tibial nerve

• Sural nerve

• Medial plantar nerve

• Lateral plantar nerve

What is the primary function of the quadratus plantae muscle?

• Flexion of the toes

• Extension of the toes

• Aligning the pull of the flexor digitorum longus

• Supporting the arch of the foot

Which movement is NOT performed by the lumbrical muscles?

• Flexion of the toes

• Abduction of the toes

• Extension of the toes

• Adduction of the toes

What mnemonic helps remember the functions of the plantar and dorsal interossei?

• PAD DAB

• ADD ABD

• FLEX EXTEND

• SUPPORT ALIGN