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Laboratory Manual for Human Anatomy and Physiology: Fetal Pig Version2nd EditionTerry R. Martin 2,016 solutions What are cranial bones? Your skull provides structure to your head and face while also protecting your brain. The bones in your skull can be divided into the cranial bones, which form your cranium, and facial bones, which make up your face. There are several types of bones within your body, including:
There are two types in your cranium:
There are eight cranial bones, each with a unique shape:
Your cranial bones are held together by unique joints called sutures, which are made of thick connective tissue. They’re irregularly shaped, allowing them to tightly join all the uniquely shaped cranial bones. The sutures don’t fuse until adulthood, which allows your brain to continue growing during childhood and adolescence. Explore the interactive 3-D diagram below to learn more about the cranial bones. Several injuries and health conditions can impact your cranial bones, including fractures and congenital conditions. FractureA fracture refers to any type of break in a bone. There are several types of skull fracture that can affect cranial bones, such as:
In many cases, skull fractures aren’t as painful as they sound, and they often heal on their own without surgery. However, more severe fractures may require surgery. CraniosynostosisSome infants are born with a condition called craniosynostosis, which involves the premature closing of skull sutures. This leads to an unusually shaped skull and can sometimes affect facial features. There are several types of craniosynostosis, depending on the sutures they affect:
Craniosynostosis requires surgical treatment to avoid later complications. Other conditionsSome other conditions that can affect the cranial bones include:
Symptoms of a cranial bone conditionWith all the structures in your head and neck, it’s sometimes hard to pinpoint when symptoms are coming from an issue with the cranial bones. Symptoms that suggest some type of cranial bone fracture include:
Symptoms of a structural issue with the cranial bones include:
Your cranial bones are the main defense system for your brain, so it’s important to maintain their health by:
If you have an infant, be sure to monitor their head for anything unusual. You can also make sure you child doesn’t stay in one position for too long. Some ways to do this include:
Which cranial bone spans the width of the cranial floor quizlet?Which cranial bone spans the width of the cranial floor? The sphenoid bone is the large bat shaped bone that spans the floor of the skull. The sphenoid bone contains two cavities known as the sphenoidal sinuses.
Which cranial bone spans the width?Sphenoid bone (1) – This butterfly-shaped bone articulates with all of the cranial bones and spans the entire width of the cranium, which you can see when you look at an inferior view of the skull.
What bones form the cranial floor?Two temporal bones form the lower cranial sides. The occipital bone forms the cranial rear and floor. The ethmoid bone forms part of the nasal cavity. Shaped like a butterfly, the sphenoid bone forms the middle part of the cranial floor.
Which of the following bones do not contain a sinus?There are four paranasal sinuses in the head: the frontal, maxillary, sphenoid, and ethmoid sinuses. They function in lightening the skull, and creating mucous for the nasal cavity. The temporal bone does not contain a sinus.
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