Answer:
A
Explanation:
Doppler Echocardiogram
A traditional echocardiogram uses sound waves to produce images of the heart. In this procedure, a radiologist uses a transducer to transmit and receive ultrasound waves, which are reflected when they reach the edge of two structures with different densities. The image produced by an echocardiogram shows the edges of heart structures, but it cannot measure the speed of blood flowing through the heart. Doppler techniques must be incorporated to provide this additional information. In a Doppler echocardiogram, sound waves of a certain frequency are transmitted into the heart. The sound waves bounce off blood cells moving through the heart and blood vessels. The movement of these cells, either toward or away from the transmitted waves, results in a frequency shift that can be measured. This helps cardiologists determine the speed and direction of blood flow in the heart.
Gathering and preparing for a scarcely adapt winter
Answer: the atomic number does not give B. the number of neutrons in the nucleus
Explanation:
Answer:
defaection is the final step in the process of digestion, during which undigested material is eliminated.
In my opinion, it is harmful. As said in the text “The sickle cell mutation causes hemoglobin to become less soluble and stick together when blood oxygen levels are low. In turn, red blood cells with clumped hemoglobin become sickle-shaped, which can lead to pain, swelling of the hands and feet, frequent infections, and eye problems.” So basically, (in my own words) when blood oxygen levels are low, the sickle cell mutation makes hemoglobin less soluble, causing it to cling together. As a result, sickle-shaped red blood cells form, causing discomfort, swelling in the hands and feet, frequent infections, and vision issues.