All terms in this list:

Axial portion: Head, neck, and trunk

Appendicular portion: Upper and lower limbs

Cranial cavity: Houses the brain

Vertebral canal: Houses the spine

Thoracic cavity: Lined with serous membranes. Contains lungs, heart, esophagus, trachea, and thymus.

Abdominal cavity: The hollow portion of the torso within the abdomen, containing the abdominal organs, in mammals below the diaphragm.

Pelvic cavity: Portion enclosed by the pelvic bones. It contains the urinary bladder and the internal reproductive organs.

Serous membrane: A thin membrane that secretes serum lining an internal body cavity, such as the peritoneum, the pericardium, and the pleura.

Parietal Pleura: The portion of the pleura that lines the inner surface of the chest wall and covers the diaphragm.

Visceral Pleura: The portion of pleura that is attached directly to the lungs.

Integumentary System: The skin, feathers and other outer coverings of an animal.

Skeletal System: Bones as well as the ligaments and cartilages that bind bones together at joints. The framework of the body.

Muscular System: Made up of the muscles in the body.

Nervous System: An organ system that coordinates the activities of muscles, monitors organs, constructs and processes data received from the senses, and initiates actions.

Endocrine System: A control system of ductless glands that secrete hormones which circulate via the bloodstream to affect cells within specific organs.

Cardiovascular System: Includes the heart, arteries, capillaries, veins, and blood. Used as transport for gases, nutrients, hormones, and wastes.

Lymphatic System: In mammals, including humans, a network of lymphatic vessels and lymph nodes that transport fluid, fats, proteins, and lymphocytes to the bloodstream as lymph, and remove microorganisms and other debris from tissues.

Digestive System: A system of organs for the purpose of digesting food.

Respiratory System: The system of organs serving for the exchange of gases.

Urinary System: Consists of the kidneys, ureters, urinary bladder, and urethra. Transports waste outside the body.

Reproductive System: Allows a species to produce organisms like itself.

Aging: The bodily changes accompanying the passage of time.