Human Anatomy and Physiology Answers

Good day please select all correct options, thanks

In an HIV-positive person, body fluids that contain a high concentration of the virus include

 A. blood.          

  B. semen.        

  C. saliva.           

 D. breast milk.

 E. cerebrospinal fluid.

good day, please select all correct options:

B lymphocytes            

 A. are part of the innate immune system.   

 B. secrete immunoglobulins.        

 C. are cytotoxic.  

 D. are stimulated by CD4 T lymphocytes. 

E. become plasma cells.

Good day, please select all the correct options. Thanks

CD4 T-lymphocytes:

 A. are helper cells

 B. are activated by major histocompatibility complex (MHC) class I molecules. 

C. inhibit activation of B cells. 

D. stimulate B cells to switch the class of immunoglobulin expressed. 

E. are part of the innate immune response.

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In a research study, a pharmaceutical company will be testing the effectiveness of a possible new vaccine for the Coronavirus. During this study, one group receives the actual medication while the other receives a syringe with saline solution (no medication). The group that receives the syringe without any medication is referred to as 

In a research study, a pharmaceutical company will be testing the effectiveness of a possible new vaccine for the Coronavirus. During this study, one group receives the actual medication while the other receives a syringe with saline solution (no medication). The group that receives the syringe without any medication is referred to as

Which muscles the most inferior border of the axillary fossa?

Can you explain the difference between the SA node ans AV node in conduction of the heart?

Nerve gas inhibits the action of cholinesterase.what symptoms would you expect to find in someone exposed to nerve gas? Provide an explanation for the symptoms

All disorder of endocrine system