Lamellae found lying between osteons that are not part of an osteon are called ______ lamellae.
Central
Circumferential
Interstitial
Concentric
The Correct Answer is C
Choice A reason: Central lamellae do not exist as a recognized anatomical term. The central canal, however, is part of an osteon and contains blood vessels and nerves. It does not refer to lamellae between osteons.
Choice B reason: Circumferential lamellae are located around the outer and inner surfaces of compact bone, encircling the entire bone structure. They are not found between osteons.
Choice C reason: Interstitial lamellae are remnants of old osteons that have been partially resorbed during bone remodeling. They fill the spaces between current osteons and are not part of any single osteon, making them the correct answer.
Choice D reason: Concentric lamellae are rings of bone matrix that surround the central canal within an osteon. They are integral to the osteon structure and not found between osteons.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Arms do not perform inversion or eversion. Their movements include flexion, extension, abduction, and rotation, but not these specific terms.
Choice B reason: Hands perform movements such as flexion, extension, abduction, adduction, and opposition, but inversion and eversion are not applicable.
Choice C reason: Feet only is the correct answer. Inversion refers to turning the sole of the foot inward, while eversion refers to turning it outward. These movements occur at the subtalar joint and are essential for balance and gait.
Choice D reason: Hands and feet is incorrect because inversion and eversion are exclusive to the feet. Hands do not perform these motions.
Choice E reason: The neck performs flexion, extension, rotation, and lateral bending, but inversion and eversion are not associated with cervical movement.
Correct Answer is C
Explanation
Choice A reason: Supraspinatus is one of the four rotator cuff muscles. It originates from the supraspinous fossa of the scapula and inserts on the greater tubercle of the humerus, aiding in shoulder abduction and stabilization.
Choice B reason: Infraspinatus is a rotator cuff muscle that originates from the infraspinous fossa of the scapula and inserts on the greater tubercle of the humerus. It functions in external rotation of the shoulder.
Choice C reason: Rhomboid minor is not part of the rotator cuff. It is located in the upper back and functions to retract the scapula. It does not attach to the humerus or contribute to shoulder joint stabilization.
Choice D reason: Teres minor is a rotator cuff muscle that originates from the lateral border of the scapula and inserts on the greater tubercle of the humerus. It assists in external rotation and stabilization of the shoulder.
Choice E reason: Subscapularis is the fourth rotator cuff muscle. It originates from the subscapular fossa and inserts on the lesser tubercle of the humerus, functioning in internal rotation of the shoulder.
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