Podcast
Questions and Answers
What is the main action of the flexor digiti minimi brevis muscle?
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?
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?
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?
What is the blood supply for the flexor digiti minimi brevis muscle?
What is the distal attachment point of the abductor digiti minimi?
What is the distal attachment point of the abductor digiti minimi?
Which of the following muscles originates from the hook of the hamate?
Which of the following muscles originates from the hook of the hamate?
Which action does the opponens digiti minimi perform?
Which action does the opponens digiti minimi perform?
What provides the proximal attachment for the flexor digiti minimi brevis muscle?
What provides the proximal attachment for the flexor digiti minimi brevis muscle?
What type of joint is the first Carpometacarpal joint?
What type of joint is the first Carpometacarpal joint?
What movement is primarily allowed at the Carpometacarpal joint of the fingers 2 to 5?
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 of the following movements is NOT associated with the first Carpometacarpal joint?
Which structural classification is attributed to the Metacarpalphalangeal joint?
Which structural classification is attributed to the Metacarpalphalangeal joint?
What is the major action at the Interphalangeal 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?
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?
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 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?
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 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)?
Which muscle is primarily responsible for the flexion of the first digit (thumb)?
What is the innervation for the Adductor pollicis muscle?
What is the innervation for the Adductor pollicis muscle?
Which muscle assists in the opposition of the first digit?
Which muscle assists in the opposition of the first digit?
What is the primary action of the Abductor pollicis brevis muscle?
What is the primary action of the Abductor pollicis brevis muscle?
Which artery provides blood supply to the Flexor pollicis brevis muscle?
Which artery provides blood supply to the Flexor pollicis brevis muscle?
What is the main action of the Adductor pollicis 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 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 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 actions is NOT performed by the Flexor pollicis brevis muscle?
Which of the following muscles does not aid in opposition of the first digit?
Which of the following muscles does not aid in opposition of the first digit?
What is the primary action of the palmar interossei muscles?
What is the primary action of the palmar interossei muscles?
Which nerve innervates the dorsal interossei muscles?
Which nerve innervates the dorsal interossei muscles?
Which action do the lumbrical muscles perform at the MCP joints?
Which action do the lumbrical muscles perform at the MCP joints?
What is the blood supply to the palmar interossei muscles?
What is the blood supply to the palmar interossei muscles?
Which of the following muscles are responsible for abducting digits 2 to 4?
Which of the following muscles are responsible for abducting digits 2 to 4?
What is the primary blood supply for the lumbricals?
What is the primary blood supply for the lumbricals?
Which muscles assist in flexion at the MCP joints and extension at the IP joints?
Which muscles assist in flexion at the MCP joints and extension at the IP joints?
What is the origin of the palmar interossei muscles?
What is the origin of the palmar interossei muscles?
Which of the following is NOT an action of the dorsal 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 digits do the palmar interossei primarily target for adduction?
Which artery is primarily responsible for supplying blood to the posterior compartment of the forearm?
Which artery is primarily responsible for supplying blood to the posterior compartment of the forearm?
What is the main action of the Anconeus muscle?
What is the main action of the Anconeus muscle?
The palmar interossei are responsible for which action?
The palmar interossei are responsible for which action?
Which of the following muscles are located in the deep muscles of the posterior compartment?
Which of the following muscles are located in the deep muscles of the posterior compartment?
Which nerve innervates the Extensor carpi radialis longus muscle?
Which nerve innervates the Extensor carpi radialis longus muscle?
What is the action of the Extensor pollicis brevis muscle?
What is the action of the Extensor pollicis brevis muscle?
The DAB mnemonic refers to which group of muscles?
The DAB mnemonic refers to which group of muscles?
Which muscle primarily adducts the hand at the wrist?
Which muscle primarily adducts the hand at the wrist?
Which vein is commonly used for venipuncture?
Which vein is commonly used for venipuncture?
Which two arteries form the superficial palmar arch?
Which two arteries form the superficial palmar arch?
What is the primary action of the Extensor digiti minimi muscle?
What is the primary action of the Extensor digiti minimi muscle?
Which muscle does NOT belong to the posterior compartment of the forearm?
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?
Which structure acts to protect and stabilize the flexor tendons in the wrist?
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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