Pectoralis major muscle

This tutorial provides an in-depth exploration of the muscles of the foot, categorized into central, lateral, medial, and dorsum groups. Each section details the origin, insertion, innervation, and function of specific muscles, such as the flexor digitorum brevis, quadratus plantae, and lumbricals. The tutorial also covers the plantar and dorsal interossei muscles, highlighting their roles in foot movement and support. The video concludes with a summary and resources for further learning.

Which of the following is NOT a group of muscles found in the foot?

• Medial muscles of the sole

• Central muscles of the sole

• Lateral muscles of the sole

• Anterior muscles of the sole

What is the primary function of the flexor digitorum brevis?

• Abduction of the big toe

• Extension of the toes

• Flexion of the second to fifth toes

• Adduction of the little toe

Which nerve innervates the quadratus plantae muscle?

• Medial plantar nerve

• Lateral plantar nerve

• Deep perineal nerve

• Superficial fibular nerve

The lumbricals of the foot are responsible for which of the following actions?

• Extension and adduction of the toes

• Flexion and abduction of the toes

• Extension and abduction of the toes

• Flexion and adduction of the toes

Where do the plantar interossei muscles originate?

• Calcaneus

• Metatarsal bones

• Phalanges

• Tarsal bones

What is the main function of the dorsal interossei muscles?

• Flexion of the toes

• Adduction of the toes

• Abduction of the toes

• Extension of the toes

Which muscle is NOT part of the lateral muscles of the sole of the foot?

• Abductor digiti minimi

• Flexor digiti minimi brevis

• Opponens digiti minimi

• Flexor hallucis brevis

The abductor digiti minimi muscle primarily performs which action?

• Adduction of the big toe

• Flexion of the big toe

• Extension of the little toe

• Abduction of the little toe

Which nerve innervates the extensor digitorum brevis?

• Medial plantar nerve

• Deep perineal nerve

• Superficial fibular nerve

• Lateral plantar nerve

What is the primary action of the flexor hallucis brevis?

• Extension of the big toe

• Flexion of the big toe

• Adduction of the big toe

• Abduction of the big toe