The stethoscope should be placed on the chest wall over the breastbone at the level of seccond rib. a. True
b. False

The statement is true.

Explanation:

The stethoscope is an acoustic instrument that amplifies sounds, it is used by doctors to perform a test known as auscultation, either on the chest or the abdomen. The hood or membrane is placed on top of the patient's body. This bell captures and amplifies the vibrations that arise from the sounds of the organs. This is possible thanks to the shape of the bell (concave) and the thinness of the membrane (to be able to copy and amplify the sounds). According to different studies, the noises that are heard on the surface of the thoracic wall are generated in the greater bronchi, mainly lobar and segmental. Noises reaching the periphery are low-frequency, since the lung serves as a filter for high-frequency sounds. The stethoscope amplifies the sounds heard in the area where it is placed. The vibrations can be auscultated with the stethoscope resting on the thorax, the abnormalities correspond to the increase or decrease in the quality of hearing,for example the increased perception of the auscultated voice can be classified as Broncophonia.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a