Human Axial Skeleton The axial skeleton forms the central axis of the body and includes the bones of the skull, ossicles of the middle ear, hyoid bone of the throat, vertebral column, and the thoracic cage (ribcage) (Figure 1). Another definition of axial skeleton is the bones including the vertebrae, sacrum, coccyx, ribs, and sternum. The central part of the body contains the axial skeleton, and the bones lying along a central axis of the body are the appendicular skeleton. Both have functions of weight bearing at differing levels, as well as those of stability, balance, and protection of organs. The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. It is composed of six parts; the human skull, the ossicles of the middle ear, the hyoid bone of the throat, the rib cage, sternum and the vertebral column.The axial skeleton and the appendicular skeleton together form the complete skeleton. It contains two part, the cranium made up of 8 bones and the face, which contains 14 bones. If you count the coccyx and sacrum each as one vertebra, then there are 26 vertebrae. Structure of Bone Tissue; Bone Development & Growth; Classification of Bones; Divisions of the Skeleton. The axial skeleton includes the bones that form the skull, laryngeal skeleton, vertebral column, and thoracic cage. Shows attachments to pelvis and does not show skull. The part of the skeleton formed by cartilage; in the adult, the cartilage of the ribs and joints. [6], The part of the skeleton that consists of the bones of the head and trunk of a vertebrate, View from both directions of a axial skeleton cut in half. Axial and appendicular are two divisions of the human skeleton that connected with each other. The ribs are shaped like crescents, with one end flattened and the other end rounded. Let's go over all of these in a bit more detail. ‘The vertebrate axial skeleton is much more than a series of vertebrae coupled with the connecting intervertebral disc tissues.’ ‘The protoconch is paucispiral or multispiral, and is smooth except for a few axial riblets near the junction with the teleoconch.’ portion of the skull that encloses the brain. The first rib is the shortest, broadest, flattest, and most curved.[5]. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Encyclopædia Britannica, Inc. Information and translations of axial skeleton in the most comprehensive dictionary definitions resource on the web. This number does not include teeth or sesamoid bones other than the patella. [2], Humans are born with separate plates which later fuse to allow flexibility as the skull passes through the pelvis and birth canal during birth. Bir derleme, Axial Power Distribution Monitoring System, Axial Scientific Instrument Protective Enclosure, Axial Seamount Hydrothermal Emissions Study, Cranial (8) Frontal—1 Parietal—2 Occipital—1 Temporal—2 Sphenoid—1 Ethmoid—1 Facial (14) Maxilla—2 Mandible—1 Zygoma—2 Lacrimal—2 Nasal—2 Turbinate—2 Vomer—1 Palatine—2 Hyoid (1) Auditory ossicles (6) Malleus—2 Incus—2 Stapes—2, Vertebrae (26) Cervical—7 Thoracic—12 Lumbar—5 Sacrum—1 Coccyx—1 Ribs (24) True rib—14 False rib—6 Floating rib—4 Sternum (1), Arms and shoulders (10) Clavicle—2 Scapula—2 Humerus—2 Radius—2 Ulna—2 Wrists (16) Scaphoid—2 Lunate—2 Triquetrum—2 Pisiform—2 Trapezium—2 Trapezoid—2 Capitate—2 Hamate—2 Hands (38) Metacarpal 10 Phalanx (finger bones)—28, Legs and hips (10) Innominate or hip bone (fusion of the ilium, ischium, and pubis)—2 Femur—2 Tibia—2 Fibula—2 Patella (kneecap)—2 Ankles (14) Talus—2 Calcaneus (heel bone)—2 Navicular—2 Cuboid—2 Cuneiform, internal—2 Cuneiform, middle—2 Cuneiform, external—2 Feet (38) Metatarsal—10 Phalanx (toe bones)—28. Bones of the skeleton: The human body has 206 bones. cranium. In addition there are 14 facial bones which form the lower front part of the skull. The bones constituting the head and trunk of a vertebrate body. Axial skeleton definition, the skeleton of the head and trunk. The word "Axial" is taken from the word "axis" and refers to the fact that the bones are located close to or along the central "axis" of the body.The term axis means the central point around which the other structures are distributed. Bones support the weight of the body, allow for body movements, and protect internal organs. Cartilage is more flexible and resistant to resorption due to pressure than bone. Cervical vertebrae make up the junction between the vertebral column and the cranium. See more. On the other hand, appendicular skeleton is the support system for the appendages. 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Axial skeleton - Skull - definition The human skeleton consists of axial skeleton (skull, vertebral column, ribs and sternum) and appendicular skeleton (bones of limbs and girdles). 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