T2 L6: Anatomy of the hand (CH)

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Which structure is also known as the pulleys for the flexor tendons?

Synovial sheath

Fibrous digital sheath (correct)

Annular ligaments

Extensor retinaculum

Which muscle is responsible for flexion of the MCP joints and extension of the IP joints?

Extensor indicis

Flexor digitorum profundus (correct)

Extensor digitorum

Flexor digitorum superficialis

Which nerve supplies the lateral two tendons of the flexor digitorum profundus?

Musculocutaneous nerve

Median nerve (correct)

Radial nerve

Ulnar nerve

Which muscle is responsible for adduction of the MCP joints and is supplied by the ulnar nerve?

Palmar interossei Signup and view all the answers

Which muscle is responsible for abduction of the thumb and is supplied by the median nerve?

Abductor pollicis brevis Signup and view all the answers

Which muscle is responsible for flexion of the thumb and is supplied by the median nerve?

Flexor pollicis brevis Signup and view all the answers

Which muscle is responsible for abduction of the 5th digit and is supplied by the ulnar nerve?

Abductor digiti minimi Signup and view all the answers

Which muscle is responsible for flexion of the 5th digit and is supplied by the ulnar nerve?

Flexor digiti minimi Signup and view all the answers

Which muscle is responsible for opposition of the thumb and is supplied by the median nerve?

Opponens pollicis Signup and view all the answers

Which muscle is responsible for opposition of the little finger and is supplied by the ulnar nerve?

Opponens digiti minimi Signup and view all the answers

Which nerve supplies the opponens digiti minimi muscle?

Ulnar nerve Signup and view all the answers

Which nerve supplies the adductor pollicis muscle?

Ulnar nerve Signup and view all the answers

Which artery forms a complex anastomosis in the hand?

Radial artery Signup and view all the answers

Which artery forms the deep palmar arch?

Ulnar artery Signup and view all the answers

Which nerve passes through the carpal tunnel?

Median nerve Signup and view all the answers

Which nerve supplies the hypothenar muscles?

Ulnar nerve Signup and view all the answers

Which nerve supplies the lateral two lumbrical muscles?

Ulnar nerve Signup and view all the answers

Which nerve is responsible for the clawed hand deformity when damaged at the wrist?

Ulnar nerve Signup and view all the answers

Which nerve is responsible for the clawed hand deformity when damaged at the elbow?

Ulnar nerve Signup and view all the answers

Which nerve is spared in carpal tunnel syndrome, resulting in no loss of sensation on the palm of the hand?

Median nerve Signup and view all the answers

Which of the following is NOT a learning outcome of the Anatomy of the Hand?

Describe the skeletal components of the wrist and hand Signup and view all the answers

Which bone is commonly fractured in the hand and has a slow recovery due to poor blood supply?

Scaphoid Signup and view all the answers

Which joint in the hand is a saddle joint?

Carpometacarpal Signup and view all the answers

Which ligaments limit the abduction and adduction of the wrist joint?

Ulnar and radial collateral ligaments Signup and view all the answers

Which movement is NOT possible in the thumb?

Adduction Signup and view all the answers

Which joints in the hand are hinge joints?

Interphalangeal Signup and view all the answers

Which structure prevents the bowing of tendons in the carpal tunnel?

Flexor retinaculum Signup and view all the answers

Which muscle is responsible for flexing the thumb?

Flexor pollicis longus Signup and view all the answers

Which ligament unifies the metacarpals in the hand?

Deep transverse metacarpal ligaments Signup and view all the answers

Which structure is continuous with the palmar aponeurosis and has longitudinal and transverse fibers?

Palmar aponeurosis Signup and view all the answers

Which bones make up the most proximal part of the hand?

Carpal bones Signup and view all the answers

What is the function of the copper bones in the hand?

They make up the palm of the hand Signup and view all the answers

Which bones make up the main part of the palm of the hand?

Metacarpal bones Signup and view all the answers

What is the purpose of learning about the tendons and muscles in the hand?

To understand hand movements Signup and view all the answers

Which joint in the hand is responsible for flexion, extension, abduction, adduction, and circumduction movements?

Metacarpophalangeal joint Signup and view all the answers

Which ligaments prevent excessive radial deviation at the wrist joint?

Radial collateral ligament Signup and view all the answers

Which bone in the hand articulates with the proximal row of carpal bones at the radio carpal joint?

Radius Signup and view all the answers

Which structure fills the gap between the distal end of the radius and the proximal row of carpal bones at the wrist joint?

Fibrous cartilaginous disc Signup and view all the answers

Which bones make up the proximal row of the carpal bones?

Scaphoid, lunate, triquetrum, pisiform Signup and view all the answers

Which bones make up the distal row of the carpal bones?

Trapezium, trapezoid, capitate, hamate Signup and view all the answers

Which bones are located on the most lateral edge of the carpal bones?

Trapezium, trapezoid Signup and view all the answers

Which bones are located on the most medial edge of the carpal bones?

Triquetrum, capitate Signup and view all the answers

What is the term used to describe individuals with excessive movement in their joints due to laxity in the ligaments?

Hypermobile Signup and view all the answers

Which type of joint allows for very little movement and is known as a plane joint?

Carpal metacarpal joints Signup and view all the answers

What is the term used to describe the movement of the thumb where it comes up to the ceiling?

Abduction Signup and view all the answers

Which type of joint is found between the trapezium and the first metacarpal and allows for the position of thumb AB and adduction flexion?

Saddle joint Signup and view all the answers

Which structure surrounds the tendons just before they enter the carpal tunnel?

Synovial sheath Signup and view all the answers

What is the function of the fibrous digital sheath?

To keep the tendons and synovial sheath held against the bone Signup and view all the answers

What are the round ligaments within the fibrous digital sheath called?

Annular ligaments Signup and view all the answers

Which tendons are covered by synovial sheaths to prevent friction?

Flexor tendons and extensor tendons Signup and view all the answers

Which joint in the hand is responsible for flexion and extension at the metacarpophalangeal joints?

Metacarpophalangeal joint Signup and view all the answers

Which ligament runs across the knuckles, keeping the joints together?

Deep transverse metacarpal ligament Signup and view all the answers

Which muscle is responsible for flexion of the wrist and inserts into the palmar aponeurosis?

Palmaris longus Signup and view all the answers

Which tendon runs underneath the flexor retinaculum and goes into the carpal tunnel?

Flexor digitorum profundus Signup and view all the answers

Which term is used to describe the spreading of the tendon across the joints?

Extensor hood Signup and view all the answers

Which part of the hand is the extensor hood or dorsal digital expansion a part of?

Metacarpal phalanges joint Signup and view all the answers

Which tendons are part of the anatomical snuff box?

Tendons from the thumb Signup and view all the answers

What is another term for extensor hoods or dorsal digital expansions?

Extensor digital tendon Signup and view all the answers

What happens to the extensor digital tendon as it goes over the metacarpal phalanges joint?

It continues down to insert into the middle and distal phalanx Signup and view all the answers

What is the function of the extensor hoods or dorsal digital expansions?

Extension of the IP joints Signup and view all the answers

T2 L6: Anatomy of the hand (CH)

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Questions and Answers

Which structure is also known as the pulleys for the flexor tendons?

Which muscle is responsible for flexion of the MCP joints and extension of the IP joints?

Which nerve supplies the lateral two tendons of the flexor digitorum profundus?

Which muscle is responsible for adduction of the MCP joints and is supplied by the ulnar nerve?

Which muscle is responsible for abduction of the thumb and is supplied by the median nerve?

Which muscle is responsible for flexion of the thumb and is supplied by the median nerve?

Which muscle is responsible for abduction of the 5th digit and is supplied by the ulnar nerve?

Which muscle is responsible for flexion of the 5th digit and is supplied by the ulnar nerve?

Which muscle is responsible for opposition of the thumb and is supplied by the median nerve?

Which muscle is responsible for opposition of the little finger and is supplied by the ulnar nerve?

Which nerve supplies the opponens digiti minimi muscle?

Which nerve supplies the adductor pollicis muscle?

Which artery forms a complex anastomosis in the hand?

Which artery forms the deep palmar arch?

Which nerve passes through the carpal tunnel?

Which nerve supplies the hypothenar muscles?

Which nerve supplies the lateral two lumbrical muscles?

Which nerve is responsible for the clawed hand deformity when damaged at the wrist?

Which nerve is responsible for the clawed hand deformity when damaged at the elbow?

Which nerve is spared in carpal tunnel syndrome, resulting in no loss of sensation on the palm of the hand?

Which of the following is NOT a learning outcome of the Anatomy of the Hand?

Which bone is commonly fractured in the hand and has a slow recovery due to poor blood supply?

Which joint in the hand is a saddle joint?

Which ligaments limit the abduction and adduction of the wrist joint?

Which movement is NOT possible in the thumb?

Which joints in the hand are hinge joints?

Which structure prevents the bowing of tendons in the carpal tunnel?

Which muscle is responsible for flexing the thumb?

Which ligament unifies the metacarpals in the hand?

Which structure is continuous with the palmar aponeurosis and has longitudinal and transverse fibers?

Which bones make up the most proximal part of the hand?

What is the function of the copper bones in the hand?

Which bones make up the main part of the palm of the hand?

What is the purpose of learning about the tendons and muscles in the hand?

Which joint in the hand is responsible for flexion, extension, abduction, adduction, and circumduction movements?

Which ligaments prevent excessive radial deviation at the wrist joint?

Which bone in the hand articulates with the proximal row of carpal bones at the radio carpal joint?

Which structure fills the gap between the distal end of the radius and the proximal row of carpal bones at the wrist joint?

Which bones make up the proximal row of the carpal bones?

Which bones make up the distal row of the carpal bones?

Which bones are located on the most lateral edge of the carpal bones?

Which bones are located on the most medial edge of the carpal bones?

What is the term used to describe individuals with excessive movement in their joints due to laxity in the ligaments?

Which type of joint allows for very little movement and is known as a plane joint?

What is the term used to describe the movement of the thumb where it comes up to the ceiling?

Which type of joint is found between the trapezium and the first metacarpal and allows for the position of thumb AB and adduction flexion?

Which structure surrounds the tendons just before they enter the carpal tunnel?

What is the function of the fibrous digital sheath?

What are the round ligaments within the fibrous digital sheath called?

Which tendons are covered by synovial sheaths to prevent friction?

Which joint in the hand is responsible for flexion and extension at the metacarpophalangeal joints?

Which ligament runs across the knuckles, keeping the joints together?

Which muscle is responsible for flexion of the wrist and inserts into the palmar aponeurosis?

Which tendon runs underneath the flexor retinaculum and goes into the carpal tunnel?

Which term is used to describe the spreading of the tendon across the joints?

Which part of the hand is the extensor hood or dorsal digital expansion a part of?

Which tendons are part of the anatomical snuff box?

What is another term for extensor hoods or dorsal digital expansions?

What happens to the extensor digital tendon as it goes over the metacarpal phalanges joint?

What is the function of the extensor hoods or dorsal digital expansions?

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