Viruses cannot replicate by themselves, because they lack a lot of the cellular machinery to do so. This is why they have to invade a cell, and use the cells cellular machinery to help the virus replicate.
This is the reason they are not considered living.
It is called central vascular catheterization
<h3>Importance of catheterization</h3>
Catheterization is defined as the use of medical devices that can be inserted into the body and used for different medical purposes.
Vascular catheterization is a peripheral catheterization that is used to detect certain upper and lower peripheral extremity conditions.
There are different types of vascular catheterization which include:
- Arteriovenous (AV) fistula,
- Arteriovenous (AV) graft and
- Central venous catheter (CVC)
Central vascular catheterization involves Introducing a vascular catheter directly into a vessel without further advancement past the punctured vessel.
Learn more about catheterization here:
brainly.com/question/3911876
The presence of a fever is usually related to stimulation of the body's immune response. Fever can support the immune system's attempt to gain advantage over infectious agents, such as viruses and bacteria, and it makes the body less favorable as a host for replicating viruses and bacteria, which are temperature sensitive. Infectious agents are not the only causes of fever, however. Amphetamine abuse and alcohol withdrawal can both elicit high temperatures, for example. And environmental fevers--such as those associated with heat stroke and related illnesses--can also occur.
The hypothalamus, which sits at the base of the brain, acts as the body's thermostat. It is triggered by floating biochemical substances called pyrogens, which flow from sites where the immune system has identified potential trouble to the hypothalamus via the bloodstream. Some pyrogens are produced by body tissue; many pathogens also produce pyrogens. When the hypothalamus detects them, it tells the body to generate and retain more heat, thus producing a fever. Children typically get higher and quicker fevers, reflecting the effects of the pyrogens upon an inexperienced immune system.
