These bones are held together by strong, fibrous, elastic tissues called sutures. ![]() The skull features numerous foramina through which pass the cranial nerves, the spinal cord, arteries, and veins. Frontal bone Occipital bone Two parietal bones Two temporal bones. ![]() The maxillary and zygomatic bones each form part of. The human skull consists of about 22 to 30 single bones which are mostly connected together by ossified joints, so called sutures. The temporomandibular joint connects the lower jaw to the temporal bone and enables movement for speech and mastication. The frontal bone forms the superior region of the orbital, and the lacrimal bone forms the medial border. The viscerocranium consists of the unpaired mandible and vomer and the paired zygomatic bones, inferior nasal conchae, lacrimal bones, nasal bones, maxillary bones, and palatine bones. The fontanelles, which comprise the anterior, posterior, and the paired mastoid and sphenoid fontanelles, close between the age of 2 months and 18 months. The bones of the infant neurocranium are not fused but are instead connected by membranous gaps between the bone plates called fontanelles, which enable flexion of the skull to facilitate passage through the birth canal and accommodate the rapidly growing brain. The cranial bones are connected by fibrous joints called sutures. At the lower end is the nuchal ridge where some neck muscles attach. The bones that make up the cranium are called the cranial bones. The neurocranium consists of the frontal, the ethmoid, the sphenoid, the occipital, and the paired temporal and parietal bones. The back of the head or occipital bone has four aesthetic bony regions. The brain is encased in the cranium of the skull. ![]() During the maturation of the skull, it is categorically divided into two main parts: the viscerocranium and the neurocranium. Some of these bones protect your brain, whereas others make up the structure of your face. The bones of the skull are formed in two different ways intramembranous ossification and endochondral ossification are responsible for creating compact cortical bone or spongy bone. You recover a full skull with teeth, and most of the bones of the body, missing a few smaller vertebrae and toes. The skull is actually made up of different bones. The human skull consists of approximately 30 bones, which can be anatomically divided into the cranial bones ( neurocranium) and the facial bones ( viscerocranium). Deep down you uncover bones that look old.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |