B
Neutrophils are typically the first immune cells to leave the blood and enter infected tissues in response to an infection. They play a critical role in the early stages of the inflammatory response by phagocytizing pathogens and releasing inflammatory mediators.
Not very likely. First, the person would have to have AIDS and second your hand would have to have a cut or crack for the infected blood to enter into you.
right atrium
when female anopheles mosquito take a blood meal from a host with malaria, the mosquitoe took the malaria bacteria's gametes with the blood meal. the gamestes fused together in the mosquitoe's gut forming the infected stage. if the mosquito then bit a non infected human host, the infected stage of the bacteria will enter the bloodstream vai the salivary gland of the mosquito.
veins
The blood enter first to superior and inferior vena cava after the vena cava it will enter to right atrium
Right Atrium.
It enters the arteries.
At the right atrium.
left ventricle
HIV is transmitted through contact with infected blood, semen, vaginal fluid and/or breast milk. The skin is the body's first line of defense against any infection. HIV is not easily transmitted and the risk described in minimal.
Blood enters the nephron first. It enters through the afferent arteriole into the glomerulus, where filtration takes place to form the initial filtrate.