use the drop - down menus to identify the terms described below. a group of cells that secretes substances…

use the drop - down menus to identify the terms described below. a group of cells that secretes substances into the blood or directly into an organ a substance produced by cells that helps specific groups of cells to perform specific functions a channel or tube that conveys a substance done

use the drop - down menus to identify the terms described below. a group of cells that secretes substances into the blood or directly into an organ a substance produced by cells that helps specific groups of cells to perform specific functions a channel or tube that conveys a substance done

Answer

Brief Explanations:

  1. Glands are groups of cells that secrete substances into the blood or directly into an organ.
  2. Hormones are substances produced by cells that help specific groups of cells perform specific functions.
  3. Ducts are channels or tubes that convey a substance.

Answer:

  1. Gland
  2. Hormone
  3. Duct