The right answer is The first image (the left one).
An atrium is an upper cavity of the heart, delimited by a thin wall, receiving blood from the bloodstream. There are two in the human heart, they allow the passage of blood from the veins (cellars and lungs) to the ventricles (right and left).
In its upper part (near the entrance of the superior vena cava) is located the sinus node, microscopic structure from which the electrical impulse which ensures the contraction of the heart (especially atrium) ...
The depolarization of the action potential is conducted step by step in the cells of the right and left atria, accompanied by a contraction of the muscle fibers.
<span>1. Protozoa are single celled, eukaryotic organisms that exhibit animal-like behaviour.
2. Viruses consists only of genetic material and a protein coat, and they are known to cause a wide variety of diseases such as AIDS.
3. Fungi have characteristics similar to plants, but they do not have root systems like plants do and they also do not rely on chlorophyll to photosynthesize.
4. Bacteria make up this category.
5. Rickettsiae is a genus of bacteria that are intracellular parasites.</span>
Because TSH is the hormone that signifies your thyroid health. The patients thyroid is not working correctly.
The correct option is C.
A tiltmeter is a very sensitive instrument used by geologists to detect very small changes in the vertical position or the ground structure movement during the process of volcanic monitoring. The device measures the tilt of the concerned land area. The device is also used to measure the reaction of dams to filling and to monitor landslides.