In the study of anatomy, viscera (sg.: viscus) refers to the internal organs of the abdominal, thoracic, and pelvic cavities. [5] The abdominal organs may be classified as solid organs or hollow organs . The solid organs are the liver, pancreas, spleen, kidneys, and adrenal glands. The hollow organs of the abdomen are the stomach, intestines, gallbladder, bladder, and rectum. [6] In the thoracic cavity, the heart is a hollow, muscular organ . [7] Splanchnology is the study of the viscera. [8 ... There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started. A comprehensive table of organs , organ parts, and the systems and subsystems they belong to. Learn about the structure and function of the human body's organs , from skeletal to endocrine, from digestive to nervous. Organs collectively form organ systems. These organs are macroscopic in structure. The brain, heart, lungs, liver, kidneys are a few examples of organs . Human anatomy mainly deals with the study of the structure of the internal organs and physiology deals with the study of the functioning of the internal organs .
