Questions and Answers
What is the shape of the scaphoid bone?
What is the second carpal bone?
lunate
What feature characterizes the triquetrum bone?
It has 3 articular surfaces and a pyramidal shape.
Which carpal bone is described as pea shaped?
Signup and view all the answers
What is the shape of the trapezium bone?
Signup and view all the answers
Which carpal bone is the smallest in the distal row?
Signup and view all the answers
Which carpal bone is the largest?
Signup and view all the answers
What unique feature does the hamate bone have?
Signup and view all the answers
Study Notes
Carpal Bones Overview
- The human wrist contains eight carpal bones, crucial for wrist flexibility and movement.
Proximal Row of Carpal Bones
-
Scaphoid:
- Boat-shaped, largest bone in the proximal row.
- Articulates with the radius, helping in wrist stability.
-
Lunate:
- Moon-shaped, second carpal bone.
- Also articulates with the radius, contributing to wrist joint formation.
-
Triquetrum:
- Possesses three articular surfaces and has a pyramidal shape.
- Connects with the pisiform bone on its proximal side.
-
Pisiform:
- Pea-shaped and the smallest carpal bone.
- Located proximal to the triqutrum, aiding finger movement.
Distal Row of Carpal Bones
-
Trapezium:
- Four-sided, irregularly shaped bone located distally.
- Plays a key role in forming the base of the thumb.
-
Trapezoid:
- Also a four-sided bone but the smallest in the distal row.
- Functions in connecting the hand and wrist.
-
Capitate:
- Largest of all carpal bones.
- Fits into a concavity created by the scaphoid and lunate bones, playing a critical role in wrist articulation.
-
Hamate:
- Last bone in the distal row, characterized by a hook-like process.
- Provides support for the structure of the hand and attachment points for ligaments.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz explores the eight carpal bones of the human wrist, highlighting their shapes, functions, and relationships within the wrist structure. You'll learn about both the proximal and distal rows of carpal bones and how they contribute to wrist flexibility and stability.
