Kurze Handmuskeln

This tutorial explores the short muscles of the hand, focusing on the metacarpal, hypothenar, and thenar muscle groups. It details the origin, insertion, innervation, and function of each muscle, providing a comprehensive understanding of hand anatomy. The tutorial also highlights the movements facilitated by these muscles, such as abduction, adduction, and flexion, and explains the role of nerves in muscle contraction.

Which of the following groups do the short hand muscles NOT belong to?

• Hypothenar musculature

• Forearm muscles

• Thenar muscles

• Metacarpal muscles

What is the primary function of the Musculi Interossei Dorsales Manus?

• Opposition of the thumb

• Radial and ulnar abduction of fingers

• Extension of the wrist

• Flexion of the thumb

Which nerve innervates the Musculi Interossei Dorsales Manus?

• Median nerve

• Radial nerve

• Ulnar nerve

• Musculocutaneous nerve

The Interossei Palmaris muscles are primarily responsible for which movement?

• Extension of the thumb

• Abduction of fingers away from the middle finger

• Adduction of fingers towards the middle finger

• Flexion of the wrist

Which muscle group is antagonistic to the Interossei Palmaris muscles?

• Musculi Interossei Dorsales Manus

• Flexor digitorum profundus

• Extensor digitorum

• Lumbrical muscles

What is the primary function of the abductor digiti minimi muscle?

• Opposition of the little finger

• Abduction of the little finger

• Extension of the little finger

• Flexion of the little finger

Which muscle is responsible for the opposition movement of the little finger?

• Flexor digiti minimi

• Opponens digiti minimi

• Palmaris brevis

• Abductor digiti minimi

Which nerve innervates the thenar muscles?

• Ulnar nerve

• Radial nerve

• Median nerve

• Axillary nerve

What is the main function of the abductor pollicis brevis muscle?

• Opposition of the thumb

• Flexion of the thumb

• Adduction of the thumb

• Abduction of the thumb

Which muscle is involved in the flexion of the thumb at the thumb saddle joint?

• Adductor pollicis

• Opponens pollicis

• Abductor pollicis brevis

• Flexor pollicis brevis