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central canal O perforating canal O circumferential lamellae O perforating fibers

central canal O perforating canal O circumferential lamellae O perforating fibers

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question 1

  1. Which of the following bones is not part of the axial skeleton?

      a

    scapula
      b

    skull
      c

    vertebral column
      d

    thoracic cage
**Question 3** What is the arrow pointing to in the image? **Description:** The image shows a detailed model of a bone structure, specifically focusing on the microanatomy of compact bone. The bone model is sectioned to reveal internal features. Several concentric circles are visible, representing the osteons or Haversian systems, the fundamental functional unit of compact bone. **Diagrams/Explanation:** - **Osteons:** The model displays multiple cylindrical structures that resemble tree rings. These are osteons, which are the structural units of compact bone. Each osteon contains a central canal surrounded by concentric layers called lamellae. - **Haversian Canal:** At the center of each osteon is a hollow area known as the Haversian canal, which houses blood vessels and nerves. - **Volkmann’s Canals:** These horizontal canals connect adjacent osteons and transmit blood vessels between them. - **Perforating Fibers:** The image shows thread-like structures that represent Sharpey's fibers, which help anchor the periosteum to the bone. The arrow is pointing to one of the Haversian systems or canals, indicating an area that is rich in blood supply and is crucial to the functionality of bone. This structure is responsible for the nourishment and communication between different parts of the bone, playing a vital role in bone health and repair.
Transcribed Image Text:**Question 3** What is the arrow pointing to in the image? **Description:** The image shows a detailed model of a bone structure, specifically focusing on the microanatomy of compact bone. The bone model is sectioned to reveal internal features. Several concentric circles are visible, representing the osteons or Haversian systems, the fundamental functional unit of compact bone. **Diagrams/Explanation:** - **Osteons:** The model displays multiple cylindrical structures that resemble tree rings. These are osteons, which are the structural units of compact bone. Each osteon contains a central canal surrounded by concentric layers called lamellae. - **Haversian Canal:** At the center of each osteon is a hollow area known as the Haversian canal, which houses blood vessels and nerves. - **Volkmann’s Canals:** These horizontal canals connect adjacent osteons and transmit blood vessels between them. - **Perforating Fibers:** The image shows thread-like structures that represent Sharpey's fibers, which help anchor the periosteum to the bone. The arrow is pointing to one of the Haversian systems or canals, indicating an area that is rich in blood supply and is crucial to the functionality of bone. This structure is responsible for the nourishment and communication between different parts of the bone, playing a vital role in bone health and repair.
- central canal - perforating canal - circumferential lamellae - perforating fibers This is a multiple-choice question format typically used in educational assessments. There are no graphs or diagrams to explain.
Transcribed Image Text:- central canal - perforating canal - circumferential lamellae - perforating fibers This is a multiple-choice question format typically used in educational assessments. There are no graphs or diagrams to explain.
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