A nurse is working with a nursing student to care for several clients who have musculoskeletal injuries. The nurse should identify which of the following functions of the musculoskeletal system? (Select All that Apply)

Production of potassium

Maintains the body’s form and shape

Provides reflexive responses to injuries

Formation of blood cells through red or yellow marrow

Protection of soft organs

Answer and Explanation

Correct Answer : B,D,E

Choice A Reason: Production of potassium

The musculoskeletal system does not produce potassium. Potassium is an essential mineral that is obtained through the diet and is crucial for various bodily functions, including muscle contraction and nerve function. The musculoskeletal system, however, is not involved in its production.

Choice B Reason: Maintains the body’s form and shape

One of the primary functions of the musculoskeletal system is to maintain the body’s form and shape. The skeletal system provides the framework that supports the body and gives it structure. Muscles attached to the bones help maintain posture and allow for movement, contributing to the overall form and shape of the body.

Choice C Reason: Provides reflexive responses to injuries

While the musculoskeletal system is involved in movement and support, reflexive responses to injuries are primarily mediated by the nervous system3. Reflex actions are automatic responses to stimuli that involve the spinal cord and peripheral nerves, not the musculoskeletal system directly.

Choice D Reason: Formation of blood cells through red or yellow marrow

The formation of blood cells, known as hematopoiesis, occurs in the bone marrow, which is part of the skeletal system. Red bone marrow is responsible for producing red blood cells, white blood cells, and platelets. Yellow bone marrow, primarily composed of fat cells, can also convert to red marrow if necessary to increase blood cell production.

Choice E Reason: Protection of soft organs

The musculoskeletal system plays a crucial role in protecting soft organs. For example, the rib cage protects the heart and lungs, the skull encases the brain, and the vertebrae shield the spinal cord. This protective function is vital for preventing injury to these essential organs.

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Correct Answer is D

Explanation

Choice A Reason: Parent who has cardiovascular disease

Having a parent with cardiovascular disease is considered a non-modifiable risk factor. This means it is related to genetic predisposition and cannot be changed or controlled by the individual. While family history is important in assessing stroke risk, it is not something that can be modified through lifestyle changes or medical interventions.

Choice B Reason: Client’s age

Age is another non-modifiable risk factor for stroke. The risk of stroke increases with age, but it is not something that can be altered. While age is an important consideration in stroke risk assessment, it is not a factor that can be modified to reduce the risk.

Choice C Reason: History of sickle cell disease

Sickle cell disease is a genetic disorder that affects the shape and function of red blood cells. It is a non-modifiable risk factor for stroke because it is inherited and cannot be changed. While managing sickle cell disease can help reduce complications, the condition itself remains a fixed risk factor.

Choice D Reason: Hypertension

Hypertension, or high blood pressure, is a significant modifiable risk factor for stroke. It can be managed and controlled through lifestyle changes such as diet, exercise, and medication. Lowering blood pressure can significantly reduce the risk of stroke, making it a key focus in stroke prevention efforts.

A. WBC Count 22,000/mm³ B. Hgb 15 g/dL C. Creatine kinase 75 units/L D. Platelet count 200,000/mm³

Correct Answer is A

Explanation

Choice A Reason: WBC Count 22,000/mm³

A white blood cell (WBC) count of 22,000/mm³ is significantly higher than the normal range, which is typically between 4,000 and 11,000/mm³. An elevated WBC count, known as leukocytosis, often indicates the presence of an infection as the body produces more white blood cells to fight off pathogens. This elevated count can also be seen in other conditions such as inflammation, stress, or bone marrow disorders, but it is a strong indicator of infection.

Choice B Reason: Hgb 15 g/dL

Hemoglobin (Hgb) levels of 15 g/dL fall within the normal range for adults, which is generally 13.8 to 17.2 g/dL for males and 12.1 to 15.1 g/dL for females. Normal hemoglobin levels indicate that the blood’s oxygen-carrying capacity is adequate and do not specifically point to an infection.

Choice C Reason: Creatine kinase 75 units/L

Creatine kinase (CK) levels of 75 units/L are within the normal range, which is typically 24 to 204 U/L. CK is an enzyme found in the heart, brain, and skeletal muscle, and elevated levels can indicate muscle damage, myocardial infarction, or other conditions affecting these tissues. However, normal CK levels do not indicate the presence of an infection.

Choice D Reason: Platelet count 200,000/mm³

A platelet count of 200,000/mm³ is within the normal range, which is generally between 150,000 and 450,000 platelets per microliter of blood. Platelets are involved in blood clotting, and normal levels do not indicate an infection. Abnormal platelet counts can be associated with bleeding disorders or thrombosis, but a normal count does not suggest an infection.

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A nurse is working with a nursing student to care for several clients who have musculoskeletal injuries. The nurse should identify which of the following functions of the musculoskeletal system? (Select All that Apply)

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