What are the three main parts of the axial skeleton?
To review:
The three main parts of the axial skeleton.
Introduction:
The central axis of the body is known as axial skeleton, which includes bones of the head and trunk of a vertebrate. It contains 80 bones and consists of skull, hyoid bone, vertebral column, auditory ausicles, ribs and sternum (chest cavity).
Explanation of Solution
The axial skeleton is controlled from 80 bones segregated into three major regions:
The skull: It is the most complex bony structure formed by cranial and facial bones, 22 in all. The cranial bones, or cranium enclose and protects brain and furnish attachment sites for head and neck muscles.
Vertebral column: Vertebral column is a series of 33 bones called vertebrae separated by invertebral discs.
Thoracic cage: Elements of the thoracic cage include the thoracic vertebrae posteriorly, the ribs laterally, and the sternum and costal cartilages anteriorly. Bony thorax forms a protective cage around the important organs of the thoracic cavity (lungs, heart, and great blood vessels).
This part of the skeleton are:
(1) it forms the longitudinal axis of the body,
(2) supports the head, neck, and trunk,
(3) protects the brain, spinal cord, and the organs in the thorax.
Therefore, it is concluded that three main parts of the axial skeleton are: skull, vertebral column, and thoracic cage.
Want to see more full solutions like this?
Chapter 7 Solutions
Anatomy & Physiology; Modified MasteringA&P with Pearson eText -- ValuePack Access Card; Interactive Physiology 10 System Suite Cd-ROM; Wrap Card for ... Brief Atlas of the Human Body (5th Edition)
- Among other bones, the axial skeleton includes the_____. a. thoracic cage and vertebral column b. thoracic cage and pectoral girdle c. skull and pelvic girdle d. pectoral and pelvic girdlesarrow_forwardDefine the ligaments of the vertebral column.arrow_forwardIf bleached human bones found lying in the desert were carefully examined, would osteons be present? How about osteocytes and a marrow cavity?arrow_forward
- The axial skeleton consists of the ______, while the appendicular skeleton consists of the _____arrow_forward______are shock pads and flex points. a. Vertebrae b. Cervical bones c. Lumbar bones d. Intervertebral disksarrow_forwardWhat is the difference between the Axial skeleton and the Appendicular skeleton? What is the difference between the Sagittal plane and the Coronal plane?arrow_forward
- Anatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax CollegeHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
- Fundamentals of Sectional Anatomy: An Imaging App...BiologyISBN:9781133960867Author:Denise L. LazoPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College