18 Questions
What is the name of the process on the upper end of the ulna that serves as the attachment point for the triceps brachii muscle?
Olecranon process
Which of the following is NOT one of the three surfaces of the ulnar shaft?
Lateral surface
What is the name of the projection on the lower end of the radius that forms the bony prominence on the lateral side of the wrist?
Styloid process
Which of the following is NOT a feature of the upper end of the radius?
Trochlear notch
What is the function of the supinator crest and supinator fossa on the ulna?
They provide attachment points for the supinator muscle.
Which of the following is NOT a feature of the lower end of the radius?
Medial surface
What type of joint is formed between the head of the radius, radial notch of the ulna, and annular ligament?
Pivot synovial joint
Which carpal bone is located in the distal row and is medial to the capitate bone?
Hamate
What structure is found on the lateral aspect of the radius?
Styloid process
Which bone articulates with the radial notch of the ulna and the head of the radius?
Lunate
What is the function of the annular ligament in relation to the proximal radioulnar joint?
Enable pronation and supination movements
Which bone is part of both the wrist joint and the distal radioulnar joint?
Lunate
Which joint articulates between the carpal and metacarpal bones of the medial four fingers?
Carpometacarpal joint (Medial four fingers)
What type of joint is the carpometacarpal joint of the thumb?
Saddle-shaped synovial joint
Which of the following joints is classified as a hinge synovial joint?
Proximal interphalangeal joint
How many phalanges does the thumb have?
2
Which joint articulates between the carpal bones?
Intercarpal joint
What type of movement is allowed at the metacarpophalangeal joint?
Flexion, extension, abduction, and adduction
Test your knowledge on the anatomy of the ulna and radius bones of the hand with Dr. Ahmed Salman, Associate Professor of Anatomy at The University Of Jordan. Explore the structure and features of the ulna, including the upper end with processes like olecranon and coronoid, as well as the shaft surfaces and borders.
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