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Questions and Answers

What is the main action of the flexor digiti minimi brevis muscle?

Extension of digit 5

Flexion of digit 5 (correct)

Adduction of digit 5

Opposition of digit 5

Which muscle is responsible for abducting the little finger?

Opponens digiti minimi

Abductor digiti minimi (correct)

Flexor digiti minimi brevis

Flexor carpi ulnaris

Which nerve innervates the hypothenar muscles?

Radial nerve

Musculocutaneous nerve

Ulnar nerve (correct)

Median nerve

What is the blood supply for the flexor digiti minimi brevis muscle?

Ulnar artery Signup and view all the answers

What is the distal attachment point of the abductor digiti minimi?

Base of proximal phalanx of digit 5 Signup and view all the answers

Which of the following muscles originates from the hook of the hamate?

Opponens digiti minimi Signup and view all the answers

Which action does the opponens digiti minimi perform?

Opposition of digit 5 Signup and view all the answers

What provides the proximal attachment for the flexor digiti minimi brevis muscle?

Hook of hamate Signup and view all the answers

What type of joint is the first Carpometacarpal joint?

Saddle joint Signup and view all the answers

What movement is primarily allowed at the Carpometacarpal joint of the fingers 2 to 5?

Gliding Signup and view all the answers

Which of the following movements is NOT associated with the first Carpometacarpal joint?

Protraction Signup and view all the answers

Which structural classification is attributed to the Metacarpalphalangeal joint?

Condyloid Signup and view all the answers

What is the major action at the Interphalangeal joint?

Flexion and extension Signup and view all the answers

What type of joint structure allows for the movements of the digits two through five?

Plane joint Signup and view all the answers

Which of the following is NOT a movement possible at the first CMC joint?

Mediation Signup and view all the answers

What type of movement primarily occurs through the Metacarpalphalangeal joint?

Flexion and extension Signup and view all the answers

What joint allows the thumb's unique range of motion compared to digits two through five?

Carpometacarpal of the thumb Signup and view all the answers

Which of the following best describes the movement capability of the Carpometacarpal joint of the thumb?

Allows for a wide variety of movements including opposition Signup and view all the answers

Which muscle is primarily responsible for the flexion of the first digit (thumb)?

Flexor pollicis brevis Signup and view all the answers

What is the innervation for the Adductor pollicis muscle?

Ulnar nerve Signup and view all the answers

Which muscle assists in the opposition of the first digit?

Opponens pollicis Signup and view all the answers

What is the primary action of the Abductor pollicis brevis muscle?

Abduction of the first digit Signup and view all the answers

Which artery provides blood supply to the Flexor pollicis brevis muscle?

Radial artery Signup and view all the answers

What is the main action of the Adductor pollicis muscle?

Adduction of the first digit Signup and view all the answers

Which muscle has a proximal attachment at the lateral side of the metacarpal for the first digit?

Opponens pollicis Signup and view all the answers

Which nerve primarily innervates the Abductor pollicis brevis muscle?

Median nerve Signup and view all the answers

Which of the following actions is NOT performed by the Flexor pollicis brevis muscle?

Extension of the first digit Signup and view all the answers

Which of the following muscles does not aid in opposition of the first digit?

Adductor pollicis Signup and view all the answers

What is the primary action of the palmar interossei muscles?

Adduction of digits 1, 2, 4, and 5 Signup and view all the answers

Which nerve innervates the dorsal interossei muscles?

Ulnar nerve Signup and view all the answers

Which action do the lumbrical muscles perform at the MCP joints?

Flexion Signup and view all the answers

What is the blood supply to the palmar interossei muscles?

Palmar metacarpal arteries Signup and view all the answers

Which of the following muscles are responsible for abducting digits 2 to 4?

Dorsal interossei Signup and view all the answers

What is the primary blood supply for the lumbricals?

Common palmar digital arteries Signup and view all the answers

Which muscles assist in flexion at the MCP joints and extension at the IP joints?

Lumbricals Signup and view all the answers

What is the origin of the palmar interossei muscles?

Base of the metacarpals Signup and view all the answers

Which of the following is NOT an action of the dorsal interossei muscles?

Adduction of digits 1 and 5 Signup and view all the answers

Which digits do the palmar interossei primarily target for adduction?

1, 2, 4, 5 Signup and view all the answers

Which artery is primarily responsible for supplying blood to the posterior compartment of the forearm?

Interosseous artery Signup and view all the answers

What is the main action of the Anconeus muscle?

Extension at elbow Signup and view all the answers

The palmar interossei are responsible for which action?

Adduction of digits Signup and view all the answers

Which of the following muscles are located in the deep muscles of the posterior compartment?

Supinator Signup and view all the answers

Which nerve innervates the Extensor carpi radialis longus muscle?

Radial nerve Signup and view all the answers

What is the action of the Extensor pollicis brevis muscle?

Abduction of the thumb Signup and view all the answers

The DAB mnemonic refers to which group of muscles?

Dorsal interossei Signup and view all the answers

Which muscle primarily adducts the hand at the wrist?

Flexor carpi ulnaris Signup and view all the answers

Which vein is commonly used for venipuncture?

Median cubital vein Signup and view all the answers

Which two arteries form the superficial palmar arch?

Radial and ulnar arteries Signup and view all the answers

What is the primary action of the Extensor digiti minimi muscle?

Extension of the fifth digit Signup and view all the answers

Which muscle does NOT belong to the posterior compartment of the forearm?

Pronator teres Signup and view all the answers

Which structure acts to protect and stabilize the flexor tendons in the wrist?

Flexor retinaculum Signup and view all the answers

Study Notes

Palmar Interossei

Adduct digits 2, 4, and 5
Assist in flexion at MCP joints
Extend at IP joints

Dorsal Interossei

Abduct digits 2, 3, and 4
Flex at MCP Joints
Extend at IP joints

Lumbricals

Flex at MCP joints
Extend at IP joints
Supplied by:
- Median Nerve for digits 1-2
- Ulnar Nerve for digits 3-4

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Untitled Quiz

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Questions and Answers

What is the main action of the flexor digiti minimi brevis muscle?

Which muscle is responsible for abducting the little finger?

Which nerve innervates the hypothenar muscles?

What is the blood supply for the flexor digiti minimi brevis muscle?

What is the distal attachment point of the abductor digiti minimi?

Which of the following muscles originates from the hook of the hamate?

Which action does the opponens digiti minimi perform?

What provides the proximal attachment for the flexor digiti minimi brevis muscle?

What type of joint is the first Carpometacarpal joint?

What movement is primarily allowed at the Carpometacarpal joint of the fingers 2 to 5?

Which of the following movements is NOT associated with the first Carpometacarpal joint?

Which structural classification is attributed to the Metacarpalphalangeal joint?

What is the major action at the Interphalangeal joint?

What type of joint structure allows for the movements of the digits two through five?

Which of the following is NOT a movement possible at the first CMC joint?

What type of movement primarily occurs through the Metacarpalphalangeal joint?

What joint allows the thumb's unique range of motion compared to digits two through five?

Which of the following best describes the movement capability of the Carpometacarpal joint of the thumb?

Which muscle is primarily responsible for the flexion of the first digit (thumb)?

What is the innervation for the Adductor pollicis muscle?

Which muscle assists in the opposition of the first digit?

What is the primary action of the Abductor pollicis brevis muscle?

Which artery provides blood supply to the Flexor pollicis brevis muscle?

What is the main action of the Adductor pollicis muscle?

Which muscle has a proximal attachment at the lateral side of the metacarpal for the first digit?

Which nerve primarily innervates the Abductor pollicis brevis muscle?

Which of the following actions is NOT performed by the Flexor pollicis brevis muscle?

Which of the following muscles does not aid in opposition of the first digit?

What is the primary action of the palmar interossei muscles?

Which nerve innervates the dorsal interossei muscles?

Which action do the lumbrical muscles perform at the MCP joints?

What is the blood supply to the palmar interossei muscles?

Which of the following muscles are responsible for abducting digits 2 to 4?

What is the primary blood supply for the lumbricals?

Which muscles assist in flexion at the MCP joints and extension at the IP joints?

What is the origin of the palmar interossei muscles?

Which of the following is NOT an action of the dorsal interossei muscles?

Which digits do the palmar interossei primarily target for adduction?

Which artery is primarily responsible for supplying blood to the posterior compartment of the forearm?

What is the main action of the Anconeus muscle?

The palmar interossei are responsible for which action?

Which of the following muscles are located in the deep muscles of the posterior compartment?

Which nerve innervates the Extensor carpi radialis longus muscle?

What is the action of the Extensor pollicis brevis muscle?

The DAB mnemonic refers to which group of muscles?

Which muscle primarily adducts the hand at the wrist?

Which vein is commonly used for venipuncture?

Which two arteries form the superficial palmar arch?

What is the primary action of the Extensor digiti minimi muscle?

Which muscle does NOT belong to the posterior compartment of the forearm?

Which structure acts to protect and stabilize the flexor tendons in the wrist?

Study Notes

Palmar Interossei

Dorsal Interossei

Lumbricals

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