Hand joints anatomy test

Assess your knowledge of hand joints anatomy. The test examines their topography, morphology, antagonist muscles, blood supply sources, and innervation.

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1. Indicate the type of radiocarpal joint (articulatio radiocarpea) based on the articular surfaces' shape

Ball-and-socket

The radiocarpal joint is a complex elliptic biaxial joint.
Ellipsoidal

The radiocarpal joint is a complex elliptic biaxial joint.
Hinge

The radiocarpal joint is a complex elliptic biaxial joint.
Saddle-shaped

The radiocarpal joint is a complex elliptic biaxial joint.
I find it difficult to answer

The radiocarpal joint is a complex elliptic biaxial joint.

2. Which artery is the primary source of formation of the deep palmar arch (arcus palmaris profundus)?

Radial artery

The deep palmar arch is predominantly formed by the terminal portion of the radial artery.
Ulnar artery

The deep palmar arch is predominantly formed by the terminal portion of the radial artery.
A. interossea anterior

The deep palmar arch is predominantly formed by the terminal portion of the radial artery.
Brachial artery

The deep palmar arch is predominantly formed by the terminal portion of the radial artery.
I find it difficult to answer

The deep palmar arch is predominantly formed by the terminal portion of the radial artery.

3. Which nerve innervates all the palmar and dorsal interosseous muscles of the hand?

Median nerve

All the interosseous muscles of the hand receive innervation from the deep branch of the ulnar nerve.
Radial nerve

All the interosseous muscles of the hand receive innervation from the deep branch of the ulnar nerve.
Ulnar nerve

All the interosseous muscles of the hand receive innervation from the deep branch of the ulnar nerve.
Musculocutaneous nerve

All the interosseous muscles of the hand receive innervation from the deep branch of the ulnar nerve.
I find it difficult to answer

All the interosseous muscles of the hand receive innervation from the deep branch of the ulnar nerve.

4. Which joint of the hand is a typical saddle joint?

Art mediocarpal

The carpometacarpal joint of the thumb is a classic saddle joint.
Art metacarpophalangea pollicis

The carpometacarpal joint of the thumb is a classic saddle joint.
Art radiocarpal

The carpometacarpal joint of the thumb is a classic saddle joint.
Art carpometacarpea pollicis

The carpometacarpal joint of the thumb is a classic saddle joint.
I find it difficult to answer

The carpometacarpal joint of the thumb is a classic saddle joint.

5. Indicate the muscle responsible for flexion at the distal interphalangeal joints of the II-V fingers

M. flexor digitorum superficialis

The flexor digitorum profundus attaches to the distal phalanges, facilitating their flexion.
Mm lumbricals

The flexor digitorum profundus attaches to the distal phalanges, facilitating their flexion.
Flexor digitorum profundus

The flexor digitorum profundus attaches to the distal phalanges, facilitating their flexion.
Mm palmar interossei

The flexor digitorum profundus attaches to the distal phalanges, facilitating their flexion.
I find it difficult to answer

The flexor digitorum profundus attaches to the distal phalanges, facilitating their flexion.

6. Which structure forms the flexor retinaculum (retinaculum flexorum)?

Fascia dorsalis manus

The flexor retinaculum is a robust thickening of the fascia that retains the tendons in the carpal tunnel.
Aponeurosis palmaris

The flexor retinaculum is a robust thickening of the fascia that retains the tendons in the carpal tunnel.
Ligamentum carpi radiatum

The flexor retinaculum is a robust thickening of the fascia that retains the tendons in the carpal tunnel.
Thickening of the proper fascia of the forearm

The flexor retinaculum is a robust thickening of the fascia that retains the tendons in the carpal tunnel.
I find it difficult to answer

The flexor retinaculum is a robust thickening of the fascia that retains the tendons in the carpal tunnel.

7. Which muscles provide adduction (adductio) of the II, IV, and V fingers to the middle finger?

Mm dorsal interossei

The palmar interosseous muscles adduct the II, IV, and V fingers to the axial line of the hand.
Mm palmar interossei

The palmar interosseous muscles adduct the II, IV, and V fingers to the axial line of the hand.
Mm lumbricals

The palmar interosseous muscles adduct the II, IV, and V fingers to the axial line of the hand.
M. adductor pollicis

The palmar interosseous muscles adduct the II, IV, and V fingers to the axial line of the hand.
I find it difficult to answer

The palmar interosseous muscles adduct the II, IV, and V fingers to the axial line of the hand.

8. Through which structure does the median nerve (n. medianus) pass when transitioning to the palm?

Canalis ulnaris

The median nerve passes through the carpal canal beneath the flexor retinaculum.
Carpal canal

The median nerve passes through the carpal canal beneath the flexor retinaculum.
Canalis radialis

The median nerve passes through the carpal canal beneath the flexor retinaculum.
Spatium subaponeuroticum

The median nerve passes through the carpal canal beneath the flexor retinaculum.
I find it difficult to answer

The median nerve passes through the carpal canal beneath the flexor retinaculum.

9. Which carpal bone directly articulates with the radius?

Os hamatum

The scaphoid is part of the proximal row forming the head of the radiocarpal joint.
Os capitatum

The scaphoid is part of the proximal row forming the head of the radiocarpal joint.
Os scaphoideum

The scaphoid is part of the proximal row forming the head of the radiocarpal joint.
Os trapezoideum

The scaphoid is part of the proximal row forming the head of the radiocarpal joint.
I find it difficult to answer

The scaphoid is part of the proximal row forming the head of the radiocarpal joint.

10. Indicate the source of innervation of the lumbricals (mm. lumbricales) of the III and IV fingers

Ulnar nerve

Two lateral lumbricals are innervated by n. medianus, two medial ones by n. ulnaris
Radial nerve

Two lateral lumbricals are innervated by n. medianus, two medial ones by n. ulnaris
Musculocutaneous nerve

Two lateral lumbricals are innervated by n. medianus, two medial ones by n. ulnaris
Median nerve

Two lateral lumbricals are innervated by n. medianus, two medial ones by n. ulnaris
I find it difficult to answer

Two lateral lumbricals are innervated by n. medianus, two medial ones by n. ulnaris

11. Where is the dorsal carpal network (rete carpi dorsale) topographically located?

Under the skin of the dorsum of the hand

The dorsal carpal network lies on the ligaments beneath the tendons of the extensor muscles.
Under the extensor tendons

The dorsal carpal network lies on the ligaments beneath the tendons of the extensor muscles.
In the thickness of the interosseous muscles

The dorsal carpal network lies on the ligaments beneath the tendons of the extensor muscles.
On the palmar surface

The dorsal carpal network lies on the ligaments beneath the tendons of the extensor muscles.
I find it difficult to answer

The dorsal carpal network lies on the ligaments beneath the tendons of the extensor muscles.

12. Which artery primarily forms the superficial palmar arch (arcus palmaris superficialis)?

Radial artery

The ulnar artery, upon reaching the palm, anastomoses with a branch of the radial, forming the superficial arch.
Posterior interosseous artery

The ulnar artery, upon reaching the palm, anastomoses with a branch of the radial, forming the superficial arch.
A. princeps pollicis

The ulnar artery, upon reaching the palm, anastomoses with a branch of the radial, forming the superficial arch.
Ulnar artery

The ulnar artery, upon reaching the palm, anastomoses with a branch of the radial, forming the superficial arch.
I find it difficult to answer

The ulnar artery, upon reaching the palm, anastomoses with a branch of the radial, forming the superficial arch.

13. What movement is limited in a typical elliptical metacarpophalangeal joint?

Flexio

Rotational movements around the longitudinal axis in metacarpophalangeal joints are not possible.
Abductio

Rotational movements around the longitudinal axis in metacarpophalangeal joints are not possible.
Rotatio

Rotational movements around the longitudinal axis in metacarpophalangeal joints are not possible.
Circumductio

Rotational movements around the longitudinal axis in metacarpophalangeal joints are not possible.
I find it difficult to answer

Rotational movements around the longitudinal axis in metacarpophalangeal joints are not possible.

14. Which bone does the tendon of m. flexor carpi ulnaris?

Os scaphoideum

The tendon of the ulnar flexor of the wrist terminates on the pisiform bone.
Os pisiforme

The tendon of the ulnar flexor of the wrist terminates on the pisiform bone.
Os trapezoideum

The tendon of the ulnar flexor of the wrist terminates on the pisiform bone.
Os lunatum

The tendon of the ulnar flexor of the wrist terminates on the pisiform bone.
I find it difficult to answer

The tendon of the ulnar flexor of the wrist terminates on the pisiform bone.

15. Which nerve branches provide innervation to the skin of the palmar surface of the little finger?

Median nerve

The ulnar nerve is responsible for sensory innervation of the ulnar edge of the palm and 1.5 fingers.
Radial nerve

The ulnar nerve is responsible for sensory innervation of the ulnar edge of the palm and 1.5 fingers.
Ulnar nerve

The ulnar nerve is responsible for sensory innervation of the ulnar edge of the palm and 1.5 fingers.
N. cutaneus brachii

The ulnar nerve is responsible for sensory innervation of the ulnar edge of the palm and 1.5 fingers.
I find it difficult to answer

The ulnar nerve is responsible for sensory innervation of the ulnar edge of the palm and 1.5 fingers.

16. In which joint does opposition (oppositio) of the thumb occur?

Art carpometacarpea pollicis

The saddle shape of the carpometacarpal joint of the thumb allows for opposition.
Art mediocarpal

The saddle shape of the carpometacarpal joint of the thumb allows for opposition.
Art intercarpal

The saddle shape of the carpometacarpal joint of the thumb allows for opposition.
Art radiocarpal

The saddle shape of the carpometacarpal joint of the thumb allows for opposition.
I find it difficult to answer

The saddle shape of the carpometacarpal joint of the thumb allows for opposition.

17. Which ligaments restrict lateral movements (abduction/adduction) in interphalangeal joints?

Ligg palmar

Collateral ligaments fix interphalangeal joints, allowing only flexion and extension.
Ligg collateral

Collateral ligaments fix interphalangeal joints, allowing only flexion and extension.
Lig pisohamate

Collateral ligaments fix interphalangeal joints, allowing only flexion and extension.
Extensor retinaculum

Collateral ligaments fix interphalangeal joints, allowing only flexion and extension.
I find it difficult to answer

Collateral ligaments fix interphalangeal joints, allowing only flexion and extension.

18. Which arteries contribute to the formation of the palmar network of the wrist (rete carpi palmare)?

Only a. radialis

The palmar network is formed by the carpal branches of the radial, ulnar, and anterior interosseous arteries.
Only a. ulnaris

The palmar network is formed by the carpal branches of the radial, ulnar, and anterior interosseous arteries.
Aa. radial, ulnar, and anterior interosseous

The palmar network is formed by the carpal branches of the radial, ulnar, and anterior interosseous arteries.
Deep brachial artery

The palmar network is formed by the carpal branches of the radial, ulnar, and anterior interosseous arteries.
I find it difficult to answer

The palmar network is formed by the carpal branches of the radial, ulnar, and anterior interosseous arteries.

19. Which muscle group abducts fingers II, IV and V away from the middle finger

Mm palmar interossei

The dorsal interosseous muscles are abductors of the II-IV fingers of the hand.
Mm lumbricals

The dorsal interosseous muscles are abductors of the II-IV fingers of the hand.
M. opponens digiti minimi

The dorsal interosseous muscles are abductors of the II-IV fingers of the hand.
Mm dorsal interossei

The dorsal interosseous muscles are abductors of the II-IV fingers of the hand.
I find it difficult to answer

The dorsal interosseous muscles are abductors of the II-IV fingers of the hand.

20. Identify the central bone involved in the formation of the midcarpal joint (art. mediocarpea)

Os pisiforme

The capitate bone is the largest bone of the distal row, part of the midcarpal joint.
Os capitatum

The capitate bone is the largest bone of the distal row, part of the midcarpal joint.
Os hamatum

The capitate bone is the largest bone of the distal row, part of the midcarpal joint.
Os triquetrum

The capitate bone is the largest bone of the distal row, part of the midcarpal joint.
I find it difficult to answer

The capitate bone is the largest bone of the distal row, part of the midcarpal joint.