Because chewing begins the breakdown of food before it is swallowed, digestion starts in the mouth and throat. which of the following systems aids most in this early stage of digestion?

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Read the article and use the information to answer the following questions hormones follicle-stimulating hormone (fsh) is produced by the . its role is to . luteinizing hormone (lh) is produced by the . its role is to