2. The Human Body Systems
The human body is the entire structure of
a human organism. It consists of a head, neck, torso,
two arms and two legs. The average height of an adult
human is about 5 to 6 feet tall.
By the time the human reaches adulthood, the body consists
of close to 100 trillion cells, the basic unit of life. These cells
are organized biologically to eventually form the whole body.
The human body is made to stand erect, walk on two feet,
use the arms to carry and lift, and has opposable thumbs
(able to grasp).
3. The Human Body Systems
Although viewed as
whole, the human body is
actually made up of ten
different systems.
Each of these systems
plays a vital part in the
health and well being of
the entire body.
1. Integumentary System
2. Skeletal System
3. Muscular System
4. Digestive System
5. Circulatory System
6. Respiratory System
7. Nervous System
8. Excretory System
9. Endocrine System
10. Reproductive System
4. Skin, hair, nails Protect the internal
organs
Axial, appendicular
skeleton
Protect the internal
organs, movement
Cardiac, smooth,
skeletal muscles
Movement
Gastrointestinal tract,
accessory organs
Break down food into
particles absorbable by
the cells
Heart, blood cells,
blood vessels, fluid
Pass nutrients, gases,
hormones, and blood cells
and others to and from
cells
5. Conducting zone,
respiratory zone
Allow gas exchange to take
place in order to remove
CO2 from the blood
Central nervous
system, peripheral
nervous system
Receive information,
process the information,
respond to the information
Kidneys, liver, sweat
glands, lungs, large
intestines
Expel metabolic wastes
from the body, maintain
internal balance
Endocrine glands,
hormones
Control and regulation of
body processes
Internal and
external structures
Production of human sex
cells, release of sex
hormones