Movement of a body part toward the midline of the body is known as
flexion
extension
abduction
adduction
The Correct Answer is D
Rationale:
A. Flexion refers to decreasing the angle between two body parts, such as bending the elbow or knee.
B. Extension is the opposite of flexion, involving an increase in the angle between body parts, such as straightening the arm or leg.
C. Abduction is the movement of a body part away from the midline of the body, like lifting the arm or leg sideways.
D. Adduction involves moving a body part toward the midline of the body, such as bringing the arms back down to the sides or crossing the legs together. This movement is essential for coordinated limb positioning and maintaining balance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rationale:
A. Osteons are structural units of compact bone, not bone-resorbing cells.
B. Osteoblasts are bone-building cells that secrete the matrix and promote bone formation, not breakdown.
C. Osteocytes are mature bone cells derived from osteoblasts. They maintain bone tissue but do not actively break it down.
D. Osteoclasts are large, multinucleated cells responsible for bone resorption. They secrete enzymes and acids that dissolve the bone matrix, playing a vital role in bone remodeling, calcium homeostasis, and repair.
Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"B","dropdown-group-3":"A"}
Explanation
Rationale:
A. The human vertebral column is divided into regions: 7 cervical vertebrae in the neck, 12 thoracic vertebrae in the chest region (each articulating with a pair of ribs), and 5 lumbar vertebrae in the lower back. These vertebrae provide structural support, flexibility, and protection of the spinal cord.
B. This is incorrect because the cervical region has 7 vertebrae, not 5.
C. Incorrect, as both the cervical and thoracic counts are wrong.
D. Incorrect, because the lumbar region has 5 vertebrae, not 7.
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