WebMar 28, 2024 · Whales show several specializations—the cervical vertebrae may be either much reduced or much increased in number, and the sacrum is missing. Humans have 7 … WebMar 20, 2015 · The human rib cage is made up of 12 paired rib bones; each are symmetrically paired on a right and left side. Of all 24 ribs, the first seven pairs are often labeled as ‘true.’ These bones...
14.3: Divisions of the Skeletal System - Biology LibreTexts
WebJul 18, 2024 · The skeleton is the body's frame. It provides the foundation to which other structures cling and helps to create our shape. All 206 of the bones of the skeleton can be categorized into four types: long, short, flat, and irregular. Each type of bone serves a particular purpose and some types have more than one function. WebMay 7, 2024 · Facial Bones. The 14 facial bones of the skull are located below the frontal bone of the cranium. They are depicted in Figure \(\PageIndex{4}\). Large bones in the face include the upper jawbones, or maxillae (singular, maxilla), which form the middle part of the face and the bottom of the two eye sockets. The maxillae are fused together except for an … birds black and white
Sternum - Anatomy Pictures and Information - Innerbody
WebFeb 8, 2024 · The sternum connects the first six ribs in the middle of the chest while serving as a strong protector of the stomach, heart, and lungs which lie below. The xiphoid … WebMar 26, 2016 · The sternum is also known as the breastbone. It is a flat bone that articulates with the clavicle and the costal cartilages of the upper 7 ribs (true ribs), while the 8th, 9th and 10th ribs ( false ribs) are indirectly attached with sternum via costal cartilage of the ribs … The cusps are pushed open to allow blood flow in one direction, and then closed to … The clavicle is an elongated, S-shaped bone that rests horizontally at the sternum … Serous pericardium The thin serous pericardium is a serous membrane, or … Esophagus (anterior view) The esophagus (oesophagus) is a 25 cm long … External abdominal oblique muscle (Musculus obliquus externus abdominis) … The mediastinum is an area found in the midline of the thoracic cavity, that is … Origin and insertion. The rectus abdominis muscle is composed of a pair of … The pectoralis major muscle is a fan-shaped muscle that consists of three … Origin and insertion. The diaphragm is a musculotendinous structure with a … Transversus thoracis muscle (Musculus transversus thoracis) Transversus … WebThere are 25 bones in the chest. The chest contains cartilage for the lungs to fill with air. Sternum (1 or 3 bones. It is counted as 1 in this article.) Ribs (24, in 12 pairs) Cervical ribs are extra ribs that occur in some people. … dan achtor for orono school board