Which of the following is true regardi Multiple Choice O O O

Last updated: 2/18/2023

Which of the following is true regardi Multiple Choice O O O O They secrete substances that do not alter the metabolism of their target cells but ha extracellular effects They secrete their products by way of ducts They have an unusually low density of blood capillaries They release their secretions into the blood Their secretions may be released onto the body surface