What Is the Cardiac Action Potential? Contraction of each cardiac myocyte is initiated by an electric excitation of the cell membrane (sarcolemma) in the form of a small voltage change (about 0.1 V) called the cardiac action potential (AP). The rate and rhythm of the heart beat, and an ...
Describes the (electrical) activity of the heart which controls the heart rate. The rhythm may become irregular, become abnormally fast or slow, which may result in the more serious cases, a loss of cardiac output with a drop in blood pressure, or even cessation of the heart beat (contracti...
high-altitude residents also face other environmental challenges such as low ambient temperatures. We describe a case of a 49-year-old woman of Kyrgyz ethnicity with abnormally increased pulmonary artery pressure, revealed by Doppler echocardiography. Significantly elevated pulmonary artery pressure was det...
The measurements were taken at an air quality monitoring station called Belisario, which is in Quito, Ecuador; the data collection time period was 1 January 2008 to 31 December 2019, and the measurements were carried out using photometric O3 analyzers. Here, the measurement results were used to...
An abnormally slow heartbeat, that is below 60 beats per minute a) Angina pectoris b) Bradycardia c) Electrocardiogram d) Fibrillation e) Heart block f) P wave g) QRS wave h) T wave i) Tachycardia Damage to the AV node, tot...
EI niuo, Spanish for “the child”, (40) when surface ocean waters in the southern Pacific become abnormally warm. So large is the Pacific, covering 30% of the planet’s surface, that the(41 )energy generated by its warming is enough to touch off a series of weather changes around the...
An abnormally low breathing rate, or bradypnea, is generally a rate below 12 breaths per minute in adults. You can slow your own breathing by controlling your inhales and exhales, a common relaxation practice, but that is not considered abnormal. A number of things can cause decreased respir...
I was in so much shock. Her wings were still out, and yet she was saying like she had been during our date. Our date? How did I get from going out with a girl from school, to almost being murdered by a crazed man with bird wings, and two superhuman girls beating him up. ...
The protagonist lives a restricted life and this pushes her to behave abnormally and display a breakdown in dignity. She is a woman aged 45, looking for a frivolous adventure which will involve being unfaithful to her husband. The feeling that she is getting older pushes her to look for ...
This process is called substrate-supported catalysis. The transformation is indeed still rather slow, but the specificity of this mutant is distinctly enhanced: The -Phe–Ala–His–Phe- sequence is cleaved 200 times faster than any of the other -Phe–Ala–X–Phe- sequences. ...