A child is growing at a rate appropriate for their age. What cells are responsible for the secretion of bone matrix that eventually results in bone growth?

Lamellae.

Osteoblasts.

Osteocytes.

Osteoclasts.

Answer and Explanation

The Correct Answer is B

Choice A rationale

Lamellae are layers of bone tissue arranged in concentric circles in compact bone, not cells responsible for bone matrix secretion.

Choice B rationale

Osteoblasts are the cells responsible for the secretion of bone matrix. They produce collagen and other substances necessary for bone formation and growth.

Choice C rationale

Osteocytes are mature bone cells derived from osteoblasts. They maintain bone tissue but do not secrete bone matrix.

Choice D rationale

Osteoclasts are cells involved in the resorption of bone tissue, not the secretion of bone matrix. They break down bone tissue during growth and repair.

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Correct Answer is B

Explanation

Choice A rationale

Lordosis is an exaggerated inward curvature of the lumbar spine. It is commonly seen in pregnant women, individuals with obesity, or those with weak abdominal muscles. Lordosis is not characterized by an increased thoracic curvature.

Choice B rationale

Kyphosis is an exaggerated outward curvature of the thoracic spine, often resulting in a hunched or rounded back. It is commonly seen in older adults due to osteoporosis, degenerative disc disease, or poor posture. Kyphosis is the correct diagnosis for increased thoracic curvature.

Choice C rationale

Scoliosis is a lateral curvature of the spine, often resembling an "S" or "C" shape when viewed from behind. It can occur in any part of the spine but does not specifically describe an increased thoracic curvature.

Choice D rationale

Epiphyses refer to the growth plates at the ends of long bones in children and adolescents. They are not related to spinal curvature or any spinal disorder. .

A. Necrosis. B. Low capillary pressure. C. Increased mobility. D. Extrinsic factors.

Correct Answer is D

Explanation

Choice A rationale

Necrosis is tissue death resulting from prolonged pressure, often a consequence rather than the direct cause of pressure ulcers. The primary cause is sustained pressure impairing blood flow.

Choice B rationale

Low capillary pressure does not directly cause pressure ulcers. They result from sustained external pressure exceeding capillary perfusion pressure, leading to ischemia and tissue damage.

Choice C rationale

Increased mobility actually prevents pressure ulcers by reducing sustained pressure on any one area, enhancing blood flow and tissue health. Immobility is a significant risk factor, not increased mobility.

Choice D rationale

Extrinsic factors like sustained pressure, friction, shear, and moisture contribute directly to pressure ulcer development by compromising skin integrity and blood flow, leading to tissue ischemia and damage.

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A child is growing at a rate appropriate for their age. What cells are responsible for the secretion of bone matrix that eventually results in bone growth?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

An older adult client has come to the clinic for a regular check-up. The nurse's initial inspection reveals an increased thoracic curvature of the client's spine. The nurse should document the spinal disorder as which of the following?

Correct Answer is B

Explanation

Pressure ulcers are caused by:

Correct Answer is D

Explanation

A client in the emergency department has a suspected neurologic disorder. To assess gait, the nurse asks the client to take a few steps; with each step, the client's feet make a half circle. To document the client's gait, the nurse should use which term?

The nurse is assessing a client with toxic epidermal necrolysis (TEN). What assessment data would indicate that the client may be progressing to keratoconjunctivitis? Select all that apply.

Which signs are manifestations of the Cushing triad? Select all that apply.

When performing a postoperative assessment on a client who has undergone surgery to manage increased intracranial pressure (ICP), a nurse notes an ICP reading of 0 mm Hg. Which action should the nurse perform first?

A client has been experiencing an unexplained decline in knee function and has consequently been scheduled for arthrography. The nurse should teach the client about what process?

A client is exhibiting diminished range of motion, loss of flexibility, stiffness, and loss of height. The history and physical findings are associated with age-related changes of which area?

A nurse is performing a neurological assessment on a client at home. During the assessment, the nurse notices that the client has a flat affect. Which lobe of the brain is responsible for a person's affect?