Multiple Choice
Which of the following is the single irregular bat-shaped bone located in the arm and hand region?
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1. Introduction to Anatomy & Physiology
Anatomical Terms for the Arm and Hand
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Which of the following best describes the anatomical term 'diaphysis'?
A
The shaft or central part of a long bone
B
The cavity within the bone that contains bone marrow
C
The connective tissue covering the bone
D
The rounded end of a long bone
Verified step by step guidance1
Understand the term 'diaphysis' in anatomy: It refers to the shaft or central part of a long bone, which is distinct from other parts of the bone such as the epiphysis (rounded ends) and metaphysis (region between the diaphysis and epiphysis).
Recall the structure of a long bone: A long bone consists of the diaphysis (shaft), epiphyses (ends), and metaphyses (transition zones). The diaphysis is primarily composed of compact bone and encloses the medullary cavity, which contains bone marrow.
Eliminate incorrect options: The cavity within the bone that contains bone marrow refers to the medullary cavity, not the diaphysis. The connective tissue covering the bone is the periosteum, and the rounded end of a long bone is the epiphysis.
Focus on the correct description: The diaphysis is the shaft or central part of a long bone, which provides structural support and serves as a site for muscle attachment.
Confirm the correct answer: Based on the anatomical definition and elimination of incorrect options, the best description of 'diaphysis' is 'The shaft or central part of a long bone.'
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