Chromosomes are NOT visibly divided into chromatids (think âchromosome kidsâ) until metaphase ;3. Twisting and crossing over are NOT to be shown here. E. PROCEDURE: Do all the following from memory and understanding so far; think of each stage as a frame in amovie film of the process:1.
Distant heart sounds. Introduction. Doctors with a stethoscope heart auscultation if the first heart sound and the second heart sound are weak, heavy cloud, blurred distant sense of those who, for the heart sound far away. Patients are often forced to take semi-recumbent, sitting forward, if supine is the heart sounds more distant. Tuberculous, cancerous, suppurative, rheumatic and some connective tissue diseases caused by pericardial effusion may cause heart sounds distant. Heart sounds far from some patients with chest pain, shortness of breath, difficulty breathing, shallow breathing, cyanosis, poor pulse pressure, congestive splenomegaly and other symptoms.
1. Explain why ventricular contraction (systole) and the 'lub' sound occur immediately after the QRS complex. The lub sound occurs during the beginning stages of systole (ventricular contraction) and when the atrioventricular valves, which prevents blood from flowing back into the atria. The QRS complex is the first heart beat of the cycle, so directly after the heart beat or QRS complex, the valves close to prevent backflow and makes the âlubâ sound. 2. Explain why ventricular relaxation (diastole) and the 'dup' sound occur after the T wave. The T wave is the wave produced by the relaxation of the ventricles, which causes the blood pressure to drop and when the semilunar valves close, the âdupâ sound is made. 3.