Search results
Results from the WOW.Com Content Network
A single contractile vacuole is positioned at the posterior end of the organism, attached to a collecting canal that extends towards the anterior end. When filled with fluid, the vacuole takes up a substantial portion of the posterior end. The distinction between the contractile vacuole and the rest of the cytoplasm is usually very clear. [6 ...
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
The most common disease of the blood vessels is hypertension or high blood pressure. This is caused by an increase in the pressure of the blood flowing through the vessels. Hypertension can lead to heart failure and stroke. Aspirin helps prevent blood clots and can also help limit inflammation. [37]
Artifactual vacuoles are small and of uniform size and distribution, in contrast to toxic vacuoles whose size and placement are variable. [1] Individuals with neutral lipid storage disease may exhibit persistent lipid-filled vacuoles in neutrophils and other granulocytes, which is a distinct phenomenon termed Jordans' anomaly .
For example, developing cells in the meristems contain small provacuoles and cells of the vascular cambium have many small vacuoles in the winter and one large one in the summer. Aside from storage, the main role of the central vacuole is to maintain turgor pressure against the cell wall .
Cardiovascular disease, including stroke, remains the leading cause of death for Americans. Modifiable risk factors, including diet and exercise, continue to play a crucial role in lowering your risk.
Polio vaccines have helped eradicate the wild form of the disease in many regions of the world, including the Americas, Europe, Southeast Asia and Africa, according to WHO. The former ...
Despite the large size of T. namibiensis, its primary mechanism for nutrient uptake is still through normal diffusion. [35] T. namibiensis can perform normal diffusion due to the reduced amount of cytoplasm as a result of its large vacuoles. [13] These large central vacuoles, which act as reserves, are the source of the large size of T ...