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Questions and Answers
What is the frontal bone?
What is the frontal bone?
- Lower jaw bone
- Cheekbone
- Bridge of nose
- Forehead bone (correct)
What is the zygomatic bone?
What is the zygomatic bone?
- Lower jaw bone
- Cheekbone (correct)
- Bridge of nose
- Forehead bone
What is the mandible?
What is the mandible?
- Lower jaw bone (correct)
- Cheekbone
- Forehead bone
- Posterior part of hard palate
Which bone is referred to as the nasals?
Which bone is referred to as the nasals?
What do the palatines form?
What do the palatines form?
What area is covered by the parietals?
What area is covered by the parietals?
Which bone is described as single, irregular, bat-shaped and part of the cranial floor?
Which bone is described as single, irregular, bat-shaped and part of the cranial floor?
What do the lacrimals bear?
What do the lacrimals bear?
What does the maxillae form?
What does the maxillae form?
What does the occipital bone articulate with?
What does the occipital bone articulate with?
Where is the foramen magnum located?
Where is the foramen magnum located?
Where is the middle ear found?
Where is the middle ear found?
Which bone makes up the nasal septum?
Which bone makes up the nasal septum?
What upward protrusion does the ethmoid bone bear?
What upward protrusion does the ethmoid bone bear?
What does the temporal bone contain related to the auditory system?
What does the temporal bone contain related to the auditory system?
The frontal bone is also known as the ______.
The frontal bone is also known as the ______.
The zygomatic bone is also known as the ______.
The zygomatic bone is also known as the ______.
The mandible is also known as the ______.
The mandible is also known as the ______.
The bridge of the nose is formed by the ______.
The bridge of the nose is formed by the ______.
The posterior part of the hard palate is formed by the ______.
The posterior part of the hard palate is formed by the ______.
Much of the lateral and superior cranium is formed by the ______.
Much of the lateral and superior cranium is formed by the ______.
The single, irregular, bat-shaped bone is known as the ______.
The single, irregular, bat-shaped bone is known as the ______.
The tiny bones that bear tear ducts are known as ______.
The tiny bones that bear tear ducts are known as ______.
The anterior part of the hard palate is formed by the ______.
The anterior part of the hard palate is formed by the ______.
The most posterior part of the cranium is the ______.
The most posterior part of the cranium is the ______.
The superior and middle nasal conchae are formed from the projections of the ______.
The superior and middle nasal conchae are formed from the projections of the ______.
The site of the mastoid process is located in the ______.
The site of the mastoid process is located in the ______.
The site of the sella turcica is found in the ______.
The site of the sella turcica is found in the ______.
The site of the cribriform plate is found in the ______.
The site of the cribriform plate is found in the ______.
The site of the mental foramen is on the ______.
The site of the mental foramen is on the ______.
The site of the styloid process is in the ______.
The site of the styloid process is in the ______.
The ethmoid, frontal, maxillae, and sphenoid all contain ______.
The ethmoid, frontal, maxillae, and sphenoid all contain ______.
The condyles of the occipital bone articulate with the ______.
The condyles of the occipital bone articulate with the ______.
The foramen magnum is contained in the ______.
The foramen magnum is contained in the ______.
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Study Notes
Bones of the Skull
- Frontal: Forehead bone, contributes to the formation of the forehead and the upper part of the eye sockets.
- Zygomatic: Cheekbone that helps form the lateral wall of the eye socket.
- Mandible: Lower jaw bone responsible for holding the lower teeth and facilitating movements of the jaw.
- Nasals: Bones forming the bridge of the nose, important for facial structure.
- Palatines: Make up the posterior part of the hard palate, contributing to the roof of the mouth.
- Parietals: Form much of the lateral and superior surfaces of the cranium, protecting the brain.
- Sphenoid: A single, irregular bat-shaped bone, forming part of the cranial floor and key in connecting other cranial bones.
Additional Skull Features
- Lacrimals: Small bones located in the eye socket that bear the tear ducts.
- Maxillae: Anterior section of the hard palate, supporting upper teeth and forming part of the eye socket.
- Occipital: Most posterior part of the cranium, containing critical features for skull articulation.
- Ethmoid: Contributes to the structure of the nasal cavity, with superior and middle nasal conchae formed from projections.
- Temporals: Located at the sides of the skull; contains the mastoid process essential for muscle attachment.
Functional Anatomy
- Sella turcica: A depression in the sphenoid bone where the pituitary gland resides.
- Cribriform plate: Located in the ethmoid bone, important for olfactory nerve passage.
- Mental foramen: Found in the mandible; a passageway for nerves and blood vessels to the chin area.
- Styloid process: A slender projection from the temporal bone providing attachment for muscles and ligaments.
- External acoustic meatus: The ear canal found in the temporal bone leading to the middle ear.
Sinus Information
- Paranasal Sinuses: The ethmoid, frontal, maxillae, and sphenoid bones all contain sinuses that help lighten the skull and influence voice resonance.
Unique Characteristics
- Vomer: Forms the nasal septum, dividing the left and right airways in the nasal cavity.
- Crista galli: An upward protrusion of the ethmoid bone resembling a cock's comb, providing attachment for membranes covering the brain.
- Occipital condyles: Articulate with the atlas, allowing nodding motions of the head.
- Foramen magnum: A large opening in the occipital bone allowing the spinal cord to connect to the brain.
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