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Questions and Answers
Condyles are found in the axial skeleton only.
Condyles are found in the axial skeleton only.
False (B)
Trochanters are unique to the femur.
Trochanters are unique to the femur.
True (A)
The mastoid process cannot be palpated on a living person.
The mastoid process cannot be palpated on a living person.
False (B)
Healthy paranasal sinuses are filled with mucus.
Healthy paranasal sinuses are filled with mucus.
The optic canal is part of the sphenoid bone.
The optic canal is part of the sphenoid bone.
Sutures are found between the cranial, facial, and sacral bones.
Sutures are found between the cranial, facial, and sacral bones.
The atlantoaxial joint is the joint between C1 and C2.
The atlantoaxial joint is the joint between C1 and C2.
All ribs articulate with the sternum.
All ribs articulate with the sternum.
Men have one rib fewer than women.
Men have one rib fewer than women.
The styloid process of the radius can be palpated proximal to the thumb.
The styloid process of the radius can be palpated proximal to the thumb.
There are three bones in the pollex.
There are three bones in the pollex.
The pubic symphysis can be palpated as a hard prominence above the genitalia.
The pubic symphysis can be palpated as a hard prominence above the genitalia.
Medial and lateral condyles of the femur are involved in the hip joint.
Medial and lateral condyles of the femur are involved in the hip joint.
The ischium is posterior to the pubis and inferior to the ilium.
The ischium is posterior to the pubis and inferior to the ilium.
The average number of bones in the adult skeleton is _____?
The average number of bones in the adult skeleton is _____?
All the bones below belong to the axial skeleton, except the _____, which belongs to the appendicular skeleton.
All the bones below belong to the axial skeleton, except the _____, which belongs to the appendicular skeleton.
A rounded knob that articulates with another bone is called a(n) _____?
A rounded knob that articulates with another bone is called a(n) _____?
Any bony prominence is called a(n) _____?
Any bony prominence is called a(n) _____?
Why does an adult not have as many bones as a child?
Why does an adult not have as many bones as a child?
What is a sesamoid bone?
What is a sesamoid bone?
A hole through a bone that usually allows passage for nerves and blood vessels is called a(n) _____?
A hole through a bone that usually allows passage for nerves and blood vessels is called a(n) _____?
Which of the bones below does not belong to the appendicular skeleton?
Which of the bones below does not belong to the appendicular skeleton?
Most of the bones of the skull are connected by immovable joints called _____?
Most of the bones of the skull are connected by immovable joints called _____?
Sinuses are absent from which bone?
Sinuses are absent from which bone?
All of the following are found on the temporal bone except the _____?
All of the following are found on the temporal bone except the _____?
Which of the following are not considered facial bones?
Which of the following are not considered facial bones?
The _____ houses the pituitary gland (hypophysis) and is found in the _____?
The _____ houses the pituitary gland (hypophysis) and is found in the _____?
Which of the following bones is a single unpaired bone?
Which of the following bones is a single unpaired bone?
The _____ suture separates the temporal bone from the parietal bone.
The _____ suture separates the temporal bone from the parietal bone.
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Study Notes
Bone Anatomy and Classification
- Condyles are not restricted to the axial skeleton; they can be found in other regions.
- Trochanters are unique to the femur, distinguishing it from other bones.
- The mastoid process on the temporal bone can be palpated externally on a living person.
- Healthy paranasal sinuses are air-filled and not filled with mucus.
Cranial and Facial Bones
- The optic canal is located in the sphenoid bone, crucial for optic nerve passage.
- Sutures connect cranial, facial, and sacral bones, forming immovable joints in the skull.
- The atlantoaxial joint, between C1 and C2 vertebrae, allows for head rotation.
- All ribs do not articulate with the sternum; only true ribs connect directly.
Ribs and Gender Differences
- Men and women have the same number of ribs, with no significant difference in rib count.
Palpable Bone Features
- The radius's styloid process can be palpated near the base of the thumb.
- The pubic symphysis is a palpable structure above the genitalia.
Skeletal Structure
- The average adult skeleton contains 206 bones.
- The scapula is part of the appendicular skeleton and not included in the axial skeleton.
- A condyle is a rounded knob that articulates with another bone.
Bone Terminology
- Any bony prominence is classified as a process, which can include epicondyles and tubercles.
- Some separate bones in a child fuse with age, resulting in fewer bones in adults.
Sesamoid Bones and Bone Passage
- Sesamoid bones form within tendons due to stress, enhancing movement and joint function.
- Foramen refers to any hole through a bone allowing passage for nerves and blood vessels.
Appendicular vs. Axial Skeleton
- Ethmoid bone does not belong to the appendicular skeleton, as it is part of the axial skeleton.
- Sutures are the primary joints connecting most skull bones.
Sinus Locations
- Temporal bone lacks sinuses, which are present in other skull bones like the sphenoid, frontal, and maxilla.
Bone Characteristics
- The temporal bone features processes such as the zygomatic process, mastoid process, and external acoustic meatus, but not the sella turcica.
- Parietal bones are not considered facial bones; they are part of the cranial structure.
Sella Turcica and Bone Pairing
- The sella turcica, located in the sphenoid bone, houses the pituitary gland.
- Ethmoid bone is a single, unpaired bone in the skull, differentiating it from paired bones like the parietals.
Skull Sutures
- Squamous suture separates the temporal and parietal bones, whereas coronal and lambdoid sutures connect different cranial structures.
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