The most numerous and versatile of all the body's joints are
synarthroses.
synovial
fibrous joints.
cartilaginous joints.
The Correct Answer is B
Rationale:
A. These joints are immovable (e.g., sutures of the skull) and do not allow versatility of movement.
B. Synovial joints are the most common type in the body and allow the greatest range of motion. They are characterized by a joint cavity filled with synovial fluid, articular cartilage, and a joint capsule. Examples include the shoulder, knee, hip, and fingers. These joints permit movements such as flexion, extension, rotation, abduction, and adduction, making them highly versatile.
C. These joints are held together by dense connective tissue and are mostly immovable (e.g., sutures, syndesmoses).
D. These joints are joined by cartilage (e.g., pubic symphysis, intervertebral discs) and allow only limited movement.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rationale:
A. This is the visible part of the hair above the skin’s surface. It is made of keratinized cells and does not have the ability to contract or move.
B. This is the portion of the hair located below the surface of the skin within the follicle. Like the shaft, it does not control hair movement.
C. The follicle is the structure in the dermis that surrounds and nourishes the hair root, providing the base for hair growth. While important for hair formation, it does not cause the hair to stand erect.
D. The arrector pili are small bands of smooth muscle fibers attached to hair follicles. When these muscles contract (in response to cold, fear, or emotional stimuli), they pull the hair follicle upright, causing the hair to "stand on end" (a phenomenon known as piloerection or "goosebumps").
Correct Answer is C
Explanation
Rationale:
A. Cyanosis refers to a bluish discoloration of the skin, typically caused by low oxygen levels in the blood.
B. A hematoma is a localized collection of blood outside blood vessels, appearing as a bruise, not generalized paleness.
C. Pallor is the medical term for paleness of the skin. It can be caused by decreased blood flow, anemia, shock, or illness and is most noticeable in areas such as the face, palms, or mucous membranes.
D. Bronzing refers to a golden-brown skin discoloration, commonly associated with Addison’s disease or certain metabolic conditions.
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