Informative Essay Human Body Systems

Topics: Blood, Heart, Reproductive system Pages: 11 (2905 words) Published: January 19, 2014
I. Introduction
A. Importance of systems
B. The major systems
1. List all the systems
a. Circulatory System
b. Integumentary System
c. Skeletal System
d. Muscular System
e. Nervous System
f. Endocrine System
g. Lymphatic System (Immune system is a part of this)
h. Respiratory System
i. Digestive System
j. Excretory System (Urinary system is a part of this)
k. Reproductive System
C. Systems to be discussed
1. Circulatory System (NCES)
2. Integumentary System
3. Skeletal System
4. Muscular System
5. Respiratory System (NCES)
6. Digestive System (NCES)
7. Excretory System (NCES)
8. Reproductive System (NCES)
II. Review NCES 7.L.1.3
A. Hierarchy of the human body
1. Atom
a. Description
b. Examples
2. Molecule
a. Description
b. Examples
3. Macromolecule
a. Description
b. DNA
4. Organelle
a. Description
b. Mitochondria
c. Rough Endoplasmic Reticulum
d. Nucleus
e. Nuclear Pores
f. Plasma Membrane
g. Nucleolus
h. Nuclear Envelope
i. Chromatin
j. Ribosomes
k. Smooth Endoplasmic Reticulum
l. Cilia
m. Golgi Apparatus
n. Microtubules
o. Centrioles
p. Peroxisomes
q. Lysosome
r. Microfilaments
III. Circulatory System
1. Organ make-up of system
a. Heart
b. Arteries
c. Veins
d. Capillaries
2. Blood flow through body
IV. Integumentary System
1. Organ make-up of system
a. Skin
2. Layers of the skin
a. Epidermis
b. Dermis
c. Subcutis
3. Cells that make up the layers of the skin
a. Squamous
b. Basal cells
c. Melanocytes
V. Skeletal System
1. Number of bones
2. Make-up of the Skeletal System
a. Bone
b. Cartilage
c. Tendons
d. Ligaments
3. Make-up of bone
4. Cartilage
a. Places found
1. Nose
2. Trachea
3. Ear
VI. Muscular System
1. Amount of muscles
a. There are about 640 named muscles.
2. Types of Muscles
a. Skeletal
b. Cardiac
c. Smooth
VII. Respiratory System
1. Purpose of the respiratory system
2. Make-up of the Respiratory System
a. Nose
b. Pharynx
c. Larynx
d. Trachea
e. Bronchi
f. Lungs
g. Diaphragm
VIII. Digestive System
1. Purpose of the digestive system
2. Make- up of the digestive system
a. Mouth
b. Esophagus
c. Stomach
d. Pancreas
e. Small Intestines
f. Gall Bladder
g. Liver
h. Large Intestines
IX. Excretory System
1. Purpose excretory system
2. Make-up of the excretory system
a. Kidneys
b. Ureters
c. Urinary bladder
d. Urethra
X. Reproductive System
1. Purpose of the reproductive system
2. Female reproductive organs
a. Vagina
b. Uterus
c. Cervix
d. Uterine tubes
e. Ovaries
3. Male reproductive organs
a. Penis
b. Scrotum
c. Testes
d. Urethra
e. Prostate gland
XI. Conclusion

Functions of the Major Systems of the Human Body

The human body is a miraculous network of systems that work together to maintain life. These systems unite to create a homeostatic environment that is vital to survival of the human body. The human body is comprised of eleven major systems Of these, seven will be discussed further), they are; circulatory system, integumentary system, skeletal system, muscular system, nervous system, endocrine system, lymphatic system (immune system is a part of this), respiratory system, digestive system, excretory system (the urinary system is a part of this), and the reproductive system. Before these eleven systems can come together, the basic building blocks of humans need to be revisited.

There is a hierarchy make-up for multi-cellular organisms, or in this case, a human, that starts with an atom and ends with a human. Without these basic building blocks, humans would not exist. The smallest of these building blocks is an atom, which is the basic unit of an element. The human body is made up of six main atoms: Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, and Calcium. Out of those six atoms, four are most prevalent: Carbon, Hydrogen, Oxygen, and Nitrogen (CHON). The next step in the hierarchy is molecules. Molecules are when two or more atoms bond. An example of this...

References: Buxton, C. A., & Provenzo, E. F. (2011). Teaching science in elementary & middle
school: A cognitive and cultural approach. Thousand Oaks, Calif: SAGE
Carter, J. S. (2004, November 2). Reproductive System. In Biology Courses. Retrieved
September 14, 2013, from
Essenfeld, B. (2004). Excretory System. In K. L. Lerner & B. W. Lerner (Eds.), The
Gale Encyclopedia of Science (3rd ed., Vol. 2, pp. 1553-1556). Detroit: Gale.
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