Adoctor diagnoses a patient with a disease called polymyositis. the patient tires quickly when walking, has difficulty swallowing, and struggles to raise his arms above his head. this disease primarily affects which type of tissue? brain epithelial blood muscle

It primarily affects the muscle (according to my research).

You often feel tired in your muscles,
You use muscle to swalow,
You use a lot of muscle to raise your arms above your head.
According to my research,  I say muscle.
I hope this helps!

The need activity of the nurse is to suction discharges from the trachea. current treatment approaches in the pressing consideration facilities or crisis offices are corticosteroids and nebulized epinephrine; steroids have demonstrated advantageous in extreme, direct, and even gentle croup. in the clear instances of croup, anti-microbials are not endorsed, as the etiology is viral