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Questions and Answers
Which group of muscles is responsible for the movement of the thumb?
Which group of muscles is responsible for the movement of the thumb?
- Adductor pollicis
- Lateral group (thenar) (correct)
- Intermediate group
- Medial group (hypothenar)
Which ligament attaches from the styloid process of ulna to the triquetral and pisiform bones?
Which ligament attaches from the styloid process of ulna to the triquetral and pisiform bones?
- Lateral (radial) collateral ligament
- Palmar ulnocarpal ligament
- Medial (ulnar) collateral ligament (correct)
- Dorsal radiocarpal ligament
Which muscles form the hypothenar eminence?
Which muscles form the hypothenar eminence?
- Lumbricals, interossei
- Palmaris brevis, Adductor pollicis
- Abductor pollicis brevis, Flexor pollicis brevis, Opponens pollicis
- Abductor digiti minimi, Flexor digiti minimi, Opponens digiti minimi (correct)
Which ligament attaches from the anterior surface of the lower radius to the anterior surface of lunate and triquetral bones?
Which ligament attaches from the anterior surface of the lower radius to the anterior surface of lunate and triquetral bones?
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Which type of joint is the wrist joint?
Which type of joint is the wrist joint?
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Study Notes
Muscles of the Thumb
- The thenar muscles are responsible for the movement of the thumb.
Ligaments of the Wrist
- The volar radiotriquetral ligament attaches from the anterior surface of the lower radius to the anterior surface of lunate and triquetral bones.
- The pisohamate ligament attaches from the styloid process of ulna to the triquetral and pisiform bones.
Muscles of the Hand
- The hypothenar muscles, including the abductor digiti minimi, flexor digiti minimi, and opponens digiti minimi, form the hypothenar eminence.
Joints of the Wrist
- The wrist joint is a synovial joint.
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