FOREARM WITH RADIUS AND ULNA Flashcards
How many bones does the forearm contain?
two bones that are parallel to each other
Which bones comprise the forearm?
Radius and Ulna
What type of bones are they?
Long bones
What are they made up of?
A body and 2 articular ends
Which side is the Radius located?
Lateral side
What side is the Ulna located?
Medial side
Which bony structures are located on the proximal end of the ulna?
upper portion that is large
olecranon process, and coronoid process
(beak-like process)
(concave depressions)
Which bony structures are located on the distal end of the ulna?
Ulnar head and styloid process
Which bony structure is located on the distal end of the radius?
Ulna Styloid Process
What is the body of the ulna like?
It is Long and slender
What is the upper portion of the Ulna LIKE?
It is long and has 2 beak like processes and concaves depressions
The Olecranon process which is the proximal process forms the?
Proximal portion of the trochlear Notch
(anteriorly and slightly inferior)
The coronoid process which is the distal process forms the? (triangular process)
Distal portion of the trochlear notch
(anterior and superior)
The Depression called “Radial Notch is located?
On the lateral aspect of the coronoid process
The distal end of the Ulna includes a rounded process on the lateral side called the?
Head
Which structure is located on the end a narrower conic projection (posteromedial) of the distal forearm?
Ulna styloid process
Which bony structures are located on the proximal radius?
Neck, Head and tuberosity
Which structure is located on the lateral aspect of the distal radius? (broad and flatten and conic project)
Radial styloid process
What is the proximal end of the radius like?
Small and flat with a disk-like head
What is located inferior to the neck of the radius?
Radial tuberosity
What is the distal end of the radius like?
broad and flattened with a conic projection on the lateral aspect call the radial styloid process
Which large bony process is easily located by touching on the posterior aspect of the proximal
forearm?
Olecranon process
Where is the trochlear notch located?
Proximal ulna
Which two structures articulate to form the proximal radioulnar joint?
Head of the radius and radial notch of the ulna
Which two structures articulate to form the distal radioulnar joint?
Head of the ulna and ulnar notch of the radius
Which articulation do the trochlea and the trochlear notch form?
Humeroulnar joint
(elbow joint)
Which structure articulates with the capitulum?
Radial head
Which structure articulates with the trochlea?
Proximal ulna
humerus
humerus
How many articulations does the humerus have?
a. 2
b. 3
c. 4
d. 5
3
Which structure articulates with the radius to form the humeroradial joint?
a. Trochlea
b. Capitulum
c. Radial notch
d. Humeral head
b. Capitulum
Which depression is located on the anterior surface of the distal humerus?
a. Radial notch
b. Coronoid fossa
c. Olecranon fossa
d. Intertubercular groove
b. Coronoid fossa
Which depression is located on the posterior surface of the distal humerus?
a. Radial notch
b. Coronoid fossa
c. Olecranon fossa
d. Intertubercular groove
c. Olecranon fossa
Which depression is located between the lesser and greater tubercles of the proximal humerus?
a. Radial notch
b. Coronoid fossa
c. Intertubercular groove
d. Olecranon fossa
c. Intertubercular groove
ends
