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Oct 30, 2023 · The fibrous skeleton of the heart, also called the cardiac skeleton, consists of four fibrous rings (anuli fibrosi, singular: annulus fibrosis) and the membranous portions of the septa of the heart. This skeleton is located at the base of the ventricles, between the atria and the ventricles. The rings of the fibrous skeleton are composed of ...
- Medical Content
- 17 min
The primary structure of cardiac skeleton consists of four dense bands of tough elastic tissue called fibrous rings that encircle the bases of the heart valves. The fibrous skeleton is composed primarily of collagen, a protein found in every type of connective tissue in the human body. There are four fibrous rings:
The human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. Figure 19.1.1 shows the position of the heart within the thoracic cavity. Within the mediastinum, the heart is separated from the other mediastinal structures by a tough membrane known as the pericardium, or pericardial sac, and sits in its own space called the pericardial ...
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
Aug 18, 2017 · The fibrous skeleton is concentrated at the base of the ventricular mass. It provides electrical insulation at the atrioventricular level and fibrous continuity for the leaflets of the mitral, aortic, and tricuspid valves. Its components include the fibrous trigones, the fibrous area of aortic-mitral continuity, the subvalvar collar of the mitral valve, the membranous septum, the interleaflet ...
- Farhood Saremi, Damián Sánchez-Quintana, Shumpei Mori, Horia Muresian, Diane E Spicer, Cameron Hassa...
- 2017
Figure 9.2.1 – Fibrous Joints: Fibrous joints form strong connections between bones. (a) Sutures join most bones of the skull. (b) An interosseous membrane forms a syndesmosis between the radius and ulna bones of the forearm. (c) A gomphosis is a specialized fibrous joint that anchors a tooth to its socket in the jaw.
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
Jan 17, 2023 · Hyaline cartilage is covered externally by a fibrous membrane, called the perichondrium, except at the articular ends of bones; it also occurs under the skin (for instance, ears and nose). Hyaline cartilage is found on many joint surfaces. It contains no nerves or blood vessels, and its structure is relatively simple.
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Figure 9.3.1 – Cartiliginous Joints: At cartilaginous joints, bones are united by hyaline cartilage to form a synchondrosis or by fibrocartilage to form a symphysis. (a) The hyaline cartilage of the epiphyseal plate (growth plate) forms a synchondrosis that unites the shaft (diaphysis) and end (epiphysis) of a long bone and allows the bone to ...
