Which of the following is not a major type of stimulus that triggers endocrine glands to manufacture and release hormones? a) enzymaticb) humoralc) hormonal d) neural

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

According to the cladogram, which organisms have roundworms as a common ancestor?