In the conduction system of the heart, which of the following components is stimulated after the sinoatrial node?
Left bundle branch
Purkinje fibers
Right bundle branch
Atrioventricular node
The Correct Answer is D
A. Left bundle branch: The left bundle branch is stimulated after the atrioventricular node and bundle of His, not immediately after the sinoatrial node.
B. Purkinje fibers: The Purkinje fibers are stimulated later in the conduction pathway, after the bundle branches.
C. Right bundle branch: The right bundle branch is also stimulated after the atrioventricular node and bundle of His.
D. Atrioventricular node: After the sinoatrial node initiates the heartbeat, the electrical impulse travels to the atrioventricular node, which then passes the signal to the bundle of His and down to the bundle branches.
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Correct Answer is B
Explanation
A. Urinalysis results: Urinalysis results are not specifically relevant to an orthopedic consultation unless there is a suspected underlying condition affecting the urinary system.
B. Radiology report: Radiology reports, such as X-rays or MRIs, are essential for orthopedic consultations as they provide crucial information about bone and joint conditions.
C. Tympanometry measurements: Tympanometry is used to assess middle ear function and is not relevant to orthopedic consultations.
D. Lipid panel: A lipid panel measures cholesterol levels and is not pertinent to orthopedic consultations unless related to overall health factors.
Correct Answer is C
Explanation
A. Urine specimen volume is 6 mL: A volume of 6 mL is generally sufficient for routine urinalysis, so this would not cause rejection.
B. Urine specimen temperature is 23° C (73.4° F): This temperature is within an acceptable range for a urine specimen that has been properly stored, so it would not cause rejection.
C. Urine specimen container is missing a preservative. Missing a preservative in the container can compromise the integrity of the specimen, leading to rejection.
D. Urine specimen is amber and turbid: Amber color and turbidity may indicate an abnormality, but they are not causes for specimen rejection in routine urinalysis.