A Hormone That Is Involved in Maintaining Electrolyte Balance in Cells

Q19: A chemical messenger that travels to a

Q20: The receptors on the surfaces of cell

Q21: Progestins are a specific type of steroid

Q22: Hormones are produced in the _ system.<br>A)digestive<br>B)endocrine<br>C)excretory<br>D)nervous<br>E)circulatory

Q23: The hypothalamus gland communicates with other tissues

Q25: Match the following.<br>-progesterone<br>A)a site on a cell

Q26: Most drugs used as antihistamines prevent allergic

Q27: Which of the following is a steroid

Q28: Which of the following is an example

Q29: Birth control pills work by mimicking what