1. Match each term with the correct definition. a. Abdomen b. Chest c. Genitals d. Pelvis e. Sternum External reproductive organs The middle part of the trunk, containing the stomach, liver and spleen The upper part of the trunk, containing the heart, major blood vessels and lungs Long, flat bone in the middle of the front of the rib cage, also called the breastbone The lower part of the trunk, containing the intestines, bladder and reproductive org

A. Abdomen:- The middle part of the trunk, containing the stomach, liver and spleen.

B. Chest:- The upper part of the trunk, containing the heart, major blood vessels and lungs.

C. Genitals:- External reproductive organs .

D. Pelvis:- The lower part of the trunk, containing the intestines, bladder and reproductive org.

E. Sternum:- Long, flat bone in the middle of the front of the rib cage, also called the breastbone.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.