Which of the following bones is NOT part of the axial skeleton?
Sacrum.
Hyoid.
Ribs.
Scapula.
The Correct Answer is D
The scapula is a flat bone that forms part of the shoulder girdle and belongs to the appendicular skeleton.
The appendicular skeleton consists of the bones of the limbs and the girdles that attach them to the axial skeleton.
Choice A is incorrect because sacrum is a triangular bone that forms the posterior part of the pelvic girdle and belongs to the axial skeleton.
The axial skeleton consists of the bones of the head and trunk of a vertebrate.
Choice B is incorrect because hyoid is a U-shaped bone that lies in the anterior neck and belongs to the axial skeleton.
The hyoid bone supports the tongue and provides attachment for some muscles of swallowing and speech.
Choice C is incorrect because ribs are long curved bones that form the rib cage and belong to the axial skeleton.
The ribs protect the thoracic organs and assist in breathing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["Occipital bone"]
Explanation
The occipital bone is a flat, unpaired bone located at the posterior aspect of the skull, forming the lower part of the back of the head.
It features several surface landmarks, including the external occipital protuberance, which serves as an attachment site for muscles and ligaments.
The occipital bone also contains several foramina, including the foramen magnum, which allows the spinal cord to pass through and connect to the brain.
The occipital bone is an important site for the attachment of muscles involved in head movement and posture.
Correct Answer is ["Intercondylar eminence of the tibia"]
Explanation
The intercondylar eminence of the tibia is a prominent bony ridge located on the superior aspect of the tibial plateau, which is the top surface of the tibia bone that articulates with the femur.
The eminence separates the two condyles of the tibia and serves as an attachment site for several ligaments, including the anterior and posterior cruciate ligaments of the knee joint.
These ligaments play a critical role in stabilizing the knee joint and preventing excessive forward or backward movement of the tibia relative to the femur.
The intercondylar eminence also provides a surface for the menisci, which are C- shaped fibrocartilaginous structures that help absorb shock and distribute forces in the knee joint.
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