Answer:
Yes, the blood pressure and heart rate return to normal after 5 minutes of physical exercise as, ANS will detect the decreasing level of oxygen and activate parasympathetic system to normalize the heart rate. The increasing of heart rate does not cause the blood pressure to increase at the same rate. After 5 minutes it return to normal as when you exercise heart rate speed up so that is why more blood reach in the muscles so it cause high heart rate and blood pressure for some minutes.
Options:
a. vector
b. fomite
c. nosocomial
d. iatrogenic
Answer:
A health care worker is accidentally punctured with a contaminated needle. This type of transmission is known as fomite.
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What is transmission of disease?</h3>
When an infected person interacts or exchanges bodily fluids with another person, transmission occurs. This can happen before the infected individual even realizes they are sick. STDs (sexually transmitted infections) can be spread this way.
Fomite things that can transmit and spread disease and infectious organisms are referred to as fomite. Fomites are also referred to as passive vectors.
For more information regarding fomites, visit:
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Cardiac muscle (myocardium) is an involuntary muscle that makes up the main tissue of the walls of the heart.
Answer:
B The host cell receptor is CD4 which the viral spike protein GP120 will bind to.
Explanation:
In HIV binding and entry, the HIV protein envelope, glycoprotein GP120 binds to the host primary cellular receptor CD4 to fuse to the host cell membrane and then initiate infection.
The virus presents itself as viral membrane spikes (molecular mimics of host molecules), these spikes consist of three molecules of gp120 which are linked together and anchored by gp41 protein to the membrane. The gp120 then binds to CD4 receptor of the host cell to facilitate viral entry int the host cell and further illicit other responses that lead to infection and dominance.
