Aparticular disease destroys smooth muscle. which tissue layers and corresponding functions will this negatively affect in arteries and veins?
a. tunica media and, therefore, the ability of blood cells to change their diameter
b. tunica externa and, therefore, the ability of blood vessels to change their diameter
c. tunica media and, therefore, the supporting tissue of blood cells
d. tunica externa, and, therefore, the supporting tissue of blood cells

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent. i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious. ii. microscope. iii. culture the substance on nutritive medium, away from any plant cells. iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious. if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv

Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive

Which factors would indicate that a patient would be unable to use autonomy to make a decision? a rude personality and an unwillingness to follow the doctor’s orders a family history of mental disorders and a criminal record a criminal record and trouble following simple directions a mental condition and an age below the legal age of consent