Skeleton and Joints
What is the significance of the lumbar curve of the spine?
It allows the torso to twist about a vertical axis.
It places the body’s centre of gravity above the feet to enable a standing posture.
It places the head’s centre of gravity above the atlas vertebrae so that the head may be held level.
It allows the torso to bend forwards to pick up objects from the ground.
It places the body’s centre of gravity above the feet to enable a standing posture.
Without the lumbar curve directing some body mass anteriorly, the centre of gravity could not be held over the base of support (the area bounded by the feet when placed on the ground). Choice C refers to the cervical curve.
It places the body’s centre of gravity above the feet to enable a standing posture. Without the lumbar curve directing some body mass anteriorly, the centre of gravity could not be held over the base of support (the area bounded by the feet when placed on the ground). Choice C refers to the cervical curve.
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Which of the following bones is part of the cranium?A. Occipital
B. Mandible
C. Hyoid
D. Carpal
On what bone does the acetabulum occur?
A. Occipital
B. Humerus
C. Pelvis
D. Tibia
What is the occipital bone?
A. It is one of the carpals.
B. It is a bone of the cranium.
C. It is one of the vertebrae.
D. It is a facial bone.
In which structure are osteoclasts and osteoblasts found?
A. In the periosteum
B. In the Haversian canals
C. In the lacunae of osteons
D. In the trabeculae of osteons
What is the physical function(s) performed by synovial fluid?
A. It forms a film that keeps the articulating surfaces of bone from touching.
B. It provides nutrients to the cells in cartilage and removes their waste.
C. It removes the heat generated by friction when the joint is in continuous use.
D. It lubricates the movement of articulating bones and distributes the pressure evenly across the joint.
What are the bones of the fingers known as?
A. Short bones
B. Metacarpals
C. Carpals
D. Phalanges
Carpals refers to
A. The points of attachment of ribs to vertebrae
B. Bones of the wrist
C. Bones that are embedded within a tendon
D. The thumbs
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