Linea nigra is commonly found on the abdomens of:
older adults
infants and children
adolescents
pregnant women
The Correct Answer is D
A. Linea nigra is not typically found in older adults.
B. Infants and children do not generally exhibit linea nigra.
C. Adolescents do not commonly have linea nigra.
D. Linea nigra is a dark line that appears on the abdomen of pregnant women due to hormonal changes and increased pigmentation.
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Correct Answer is C
Explanation
A. Heroin use is generally associated with intravenous use and is less commonly linked to nasal septum perforation.
B. Ecstasy (MDMA) is primarily used in tablet form and is not typically associated with nasal use that would cause septal perforation.
C. Cocaine is frequently snorted, which can lead to irritation and damage to the nasal passages and septum, resulting in perforation.
D. Marijuana is usually smoked rather than snorted, and it is not commonly associated with nasal septum perforation.
Correct Answer is ["B","C","E"]
Explanation
A. The diaphragm of the stethoscope is used for high-pitched sounds, such as lung and normal heart sounds, not low-pitched sounds.
B. The binaural (earpieces) should fit snugly in the ears to ensure proper sound transmission and clarity.
C. Short tubing provides more accurate sounds by minimizing sound distortion, making it ideal for clinical use.
D. The bell of the stethoscope is used for low-pitched sounds, such as heart murmurs, not high-pitched sounds.
E. The stethoscope works by blocking out environmental sounds to help the user focus on internal body sounds.