FUNCTIONS—Reproduction via conception, the continuation and
improvement (supposedly) of a species.
RESPIRATORY SYSTEM
STRUCTURES — Lungs, trachea, bronchi, bronchial tubes, and alveoli.
FUNCTIONS — Ingestion of the body’s main source of energy—”oxygen.”
Oxygen allows for oxidation to take place within the body. The respiratory
system removes carbon dioxide; helps regulate the acid-base balance of the
body; and brings hydrogen, carbon, nitrogen, etc., into the body. These
elements are life’s most basic foods.
SKELETAL SYSTEM
STRUCTURES — All the bones and cartilage that comprise the physical
body. There are 206 bones in the human body: Head—twenty-nine bones.
Upper extremities—sixty-four bones. Trunk—fifty-one bones. Lower
extremities—sixty-two bones.
FUNCTIONS — The skeletal system gives form and structure to the
physical body. It also allows for various movements of the limbs. Our bones
are oftentimes a source of calcium when they shouldn’t be.
MODULE 2.3
The CellIn Modules 2.1 and 2.2 we have already laid out the basics, presenting the
overall systems of the body. Modules 2.5 and 2.13 will detail each of these
various systems (circulatory system, immune system, glandular system, etc.),
the organs and glands that comprise them, as well as their related functions.
Before we discuss the systems, organs and glands, however, let’s start at
the beginning: with the cell. As all of creation is made up of atoms, so your
body—bones, tissues, organs and glands— is made up of cells.