Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. The most conspicuous feature of the temporal bone is the foramen magnum.
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7. The Skeletal System
The Skull
2:01 minutesProblem 1
Textbook Question
Match the bones in column B with their description in column A. (Note that some descriptions require more than a single choice.)
Column A
_____ (1) connected by the coronal suture
_____ (2) keystone bone of cranium
_____ (3) keystone bone of the face
_____ (4) form the hard palate
_____ (5) allows the spinal cord to pass
_____ (6) forms the chin
_____ (7) contain paranasal sinuses
_____ (8) contains mastoid sinuses
Column B
a. ethmoid
b. frontal
c. mandible
d. maxillary
e. occipital
f. palatine
g. parietal
h. sphenoid
i. temporal
Verified step by step guidance1
Step 1: Understand the descriptions in Column A and identify the anatomical features or functions associated with each description. For example, 'connected by the coronal suture' refers to the bones joined by this specific suture in the skull.
Step 2: Review the bones listed in Column B and recall their anatomical locations and functions. For instance, the 'frontal' bone is part of the forehead, and the 'occipital' bone is at the back of the skull.
Step 3: Match each description in Column A with the corresponding bone(s) in Column B based on their anatomical features. For example, the 'keystone bone of the cranium' is the sphenoid bone because it articulates with all other cranial bones.
Step 4: For descriptions requiring multiple choices, such as 'form the hard palate,' identify the bones that contribute to this structure. The hard palate is formed by the maxillary and palatine bones.
Step 5: Double-check your matches by cross-referencing the descriptions with the anatomical functions and locations of the bones to ensure accuracy. For example, 'contains mastoid sinuses' corresponds to the temporal bone, as the mastoid process is part of it.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Cranial Sutures
Cranial sutures are fibrous joints that connect the bones of the skull. The coronal suture, for example, is the joint between the frontal bone and the parietal bones. Understanding these sutures is essential for identifying how the skull is structured and how it protects the brain.
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Keystone Bones
Keystone bones are those that are central to the structure of the skull or face, providing support and stability. The sphenoid bone is often referred to as the keystone of the cranium, while the maxillary bone serves a similar role in the facial skeleton. Recognizing these bones helps in understanding their functional significance in craniofacial anatomy.
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Paranasal Sinuses
Paranasal sinuses are air-filled spaces located within the bones of the skull, which help reduce weight and provide resonance to the voice. They are associated with several bones, including the maxillary and ethmoid bones. Knowledge of these sinuses is important for understanding respiratory health and conditions like sinusitis.
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