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Sternum: Quiz


Question 1: In some mammals, such as ________, the individual segments, or sternebrae, never fuse, and remain separated by cartilagenous plates throughout life.
DidelphinaeVirginia OpossumShort-tailed opossumOpossum

Question 2: They may result from trauma, such as when a driver's chest is forced into the steering column of a ________ in a car accident.
ThrottleAutomobileVacuum servoDisc brake

Question 3: In ________, it is a relatively large bone, and (except in ratites) bears an enormous projecting keel, to which the flight muscles are attached.
BirdEnantiornithesModern birdsArchaeopteryx

Question 4: Only in ________ does the sternum take on the elongated, segmented, form seen in humans.
Mammal classificationEven-toed ungulatePrimateMammal

Question 5: This article was originally based on an entry from a ________ edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
Public domainCopyright infringementCopyrightIntellectual property

Question 6: In ________ and reptiles it is typically a shield-shaped structure, often composed entirely of cartilage.

Question 7: It connects to the rib bones via cartilage, forming the anterior section of the rib cage with them, and thus helps to protect the lungs, ________ and major blood vessels from physical trauma.
Lymphatic systemTorsoCirculatory systemHeart

Question 8: The sternum is composed of highly vascular tissue, covered by a thin layer of compact bone which is thickest in the manubrium between the articular facets for the ________.
ScapulaUpper limbClavicleCoracoid process

Question 9: The sternum probably first evolved in early tetrapods as an extension of the pectoral girdle; it is not found in ________.
Forage fishPelagic fishFish anatomyFish

Question 10: Sternum fractures are frequently associated with underlying injuries such as ________, or bruised lung tissue.
PneumoniaTracheobronchial injuryPneumothoraxPulmonary contusion


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