It was discovered in 1972
B. They are caused by mutations of the X chromosome
Answer:
The cardiac muscle is made up of branched muscle cells, which have 1 or 2 nuclei and which the contact area between the heart fibers gives rise to specialized regions at the level of the plasma membrane called intercalary discs. The intercalary discs unite the cardiac muscle cells with each other, which provides greater adhesion to the tissue and intervenes in the rapid communication between cells. This allows its simultaneous contraction and the production of the beat.
Explanation:
The intercalary discs are the union systems that associate the cardiac muscle cells to form the myocardial fibers, the cardiac muscle is the muscle tissue of mixed components, which is located exclusively in the walls of the heart. For this reason, it has the function of generating the necessary contractions for the blood to reach all parts of the body.The intercalary discs are a special type of intercellular junction, a gap that guarantees electrical communication between these cells; and on the other hand, it provides places of adhesion and anchorage of one cell with another. The intercalary discs provide the structural foundation that allows the heart to behave as a functional syncytium.
a) It never needs batteries.
b) It's designed for extremely active patients.
c) It's specifically designed for long-term use.
d) An LVAD only supports a failing left ventricle.
Answer:
d) An LVAD only supports a failing left ventricle.
Explanation:
When both halves (R.&L Ventricles) of the heart failed to pump blood, together with the failure of the valves to regulate blood flow as in biventricular failure, <em>a device can planted in the patient to replace the failed right or let ventricles and to control the directional flow of blood to the vascular system. This device is called TAH.</em>
However when the left ventricle is faulty so that blood pump into the systemic circulation is affected in case of a patient who is <u>waiting for heart transplants not old enough for transplants;</u> <u>who needs to sustain heart function after surgery</u>; or <u>patients who could not find a heart donor and therefore need to survive</u>, <em>a mechanical pump is implanted below the diaphragm and power by battery cell in a wearable outside. This miniature mechanical pump is called Left venticular assist device(LVAD).It only correct left ventricle anomaly</em> .
Thus the major difference between the two is that LVAD, is only for the faulty left Ventricle correction.
Answer:
biosphere first then geosphere and the atmosphere
