Chapter 5
The interphalangeal (IP joints) articulations between the phalanges are...?
Synovial hinge joints, they allow only flexion and extension.
The metacarpophalangeal articulations (MCP joint) are...?
Synovial ellipsoidal joints.
allow flexion, extension, abduction, adduction and circumduction.
The intercarpal articulations form what type of joint...?
Synovial gliding joints
What does the distal ulna articulate with...?
The ulnar notch of the distal radius.
The three joints listed in the prior question are...?
enclosed in a common capsule.
The interphalangeal joints are named by location and are differentiated as either...?
Proximal interphalangeal joints. (PIP)
Distal interphalangeal joints. (DIP)
Why are only limited abduction and adduction possible in the MCP joint...?
Because of the less convex and wider surface of the MCP joint of the thumb.
The articulations between the lunate and scaphoid form what type of joint...?
Gliding joint
What does the proximal head of the radius articulate with...?
The radial notch of the ulna, on the medial side.
The trochlea of the humerus articulates with the...?
the ulna at the trochlea notch
Because the first digit (thumb) has only two phalanges (distal and proximal), the joint between the two phalanges is called the...?
IP joint (interphalangeal joint)
The carpal bones articulate with the...?
Other carpal bones
the metacarpals
the radius of the forearm.
The radiocarpal articulation is what type of joint...?
Synovial ellipsoidal joint
What joints are responsible for supination and pronation of the forearm and hand...?
The distal and proximal radioulnar joint
The capitulum of the humerus articulates with the...?
The flattened head of the radius.
Where do the metacarpals articulate with the phalanges...?
At the distal end of the metacarpal.
In the carpometacarpal joint (CMC) articulations, the first metacarpal and the trapezium form what type of joint...?
A synovial saddle joint, which permits the thumbs to oppose the fingers.
What is the radiocarpal joint formed by...?
articulation of the scaphoid, lunate, and triquetrum, and with the radius and the articular disc. (just distal to the ulna)
In pronation, the radius turns...?
medially and crosses over the ulna at its upper third. and the ulna makes a slight counter rotation that rotates the humerus medially.
The humeroulnar and humeroradial articulations form what type of joint...?
Synovial hinge joint and allow only flexion and extension.
Where do the metacarpals articulate with the carpal bones...?
At the proximal end of the metacarpal.
The articulations between the second, third, fourth and fifth metacarpals, and the trapezoid, capitate and the hamate form what type of joint...?
Synovial gliding joint.
What type of articulations are the distal and proximal radioulnar joint...?
Synovial pivot joints
The elbow joint proper includes the...?
proximal radioulnar articulation and the three articulation between the humerus, radius and ulna.