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.
Answer: Normally, the invasive species can reproduce rapidly because their environment has no/lacks predators and pests.
"Diffusion is the movement of molecules from an area of higher concentration to one of lower" is the one among the following choices given in the question that <span>best describes the process of diffusion. The correct option among all the options that are given in the question is the fourth option or the last option.</span>
Answer:
image so we can answer the question?
Explanation:
The medical terms that ends with ae letter combination shows that it is the plural form of the term.
for example bulla is a medical term which is used for blisters which are filled with fluid, when there is more than one bulla we use the word bullae, that is the plural form of the word bulla.
