Question

the joints in the fingers are ______.
a. pivot joints
b. saddle joints
c. condyloid joints
d. ball-and-socket joints

please select the best answer from the choices provided.

○ a
○ b
○ c
○ d

Explanation:

To determine the type of joint in the fingers, we analyze each option:

• Option A (pivot joints) allow rotation around a single axis, e.g., the joint between the radius and ulna. Fingers don't have pivot joints.
• Option B (saddle joints) have a saddle - shaped surface, like the thumb's carpometacarpal joint. Fingers (excluding the thumb) don't have saddle joints.
• Option C (condyloid joints) allow movement in two planes (flexion - extension, abduction - adduction) and are found in the metacarpophalangeal and interphalangeal joints of the fingers.
• Option D (ball - and - socket joints) allow movement in multiple planes, e.g., the shoulder joint. Fingers don't have ball - and - socket joints.

So the joints in the fingers are condyloid joints.

Answer:

C. condyloid joints