Unit 2 Study Guide

System /Function
End of Human Body Systems Unit Study Guide
Parts of the System
Respiratory System –
Responsible for taking in oxygen and expelling carbon
Circulatory System –
A system of organs and vessels that is responsible for the
flow of blood, nutrients, hormones, oxygen and other
gases to and from cells.
Nervous System –
A collection of nerves and specialized cells known as
neuron that transmit signals between different parts of
the body.
*the bodies electrical wiring*
Central Nervous System (brain, spinal cord, and
Peripheral Nervous System (sensory neurons that
connect to the central nervous system)
Immune System –
Transports and filters lymph.
Initiates the immune response.
Digestive System –
A series of organs that converts food into nutrients that
are absorbed into the body.
Solid waste is also collected and removed.
Urinary System –
Produces, stores and eliminates wastes from the blood.
Muscular System –
 Support Movement
 Maintain Posture
 Circulate Blood
Skeletal System –
 Support and structure
 Movement
 Protection
Passive Immunity – is temporary and can come
from a mother to a child.
 Active Immunity – your own body is producing
antibodies. The antigen – antibody reaction
occurs within the body in response to contact
with the antigen or by receiving a vaccination.
 Mouth
 Esophagus
 Stomach
 Small Intestines
 Liver
 Large Intestines
 Kidneys
 Nephrons
 Ureters
 Bladder
 Urethra
 Sphincter Muscles
Types of Muscles
 Skeletal
 Smooth
 Cardiac
*There are 650 muscles in the system.
Bones – 206 bones in an adult
*Bone Marrow produces blood cells.
End of Human Body Systems Unit Study Guide
Writing Prompt:
What is homeostasis and how do the Human Body Systems work together to keep your body
in homeostasis?
My Example:
What is homeostasis? Homeostasis is a balanced internal environment in vertebrates. Some
examples of homeostasis in the human body are the ability to maintain a constant
temperature, to maintain proper oxygenation levels, and to maintain proper nutrient levels.
Many systems within the human body work together to keep the body in homeostasis. The
circulatory system works in conjunction with the respiratory system, nervous system, digestive
system, and the urinary system. The circulatory system carries nutrients, oxygen, and wastes
through the body in a closed loop. The brain sends a signal to the body that oxygen and
nutrients are needed in the cells. The signal travels through the nervous system to the lungs
which are part of the respiratory system. The system reacts and draws in a breath. The
circulatory system collects the oxygen to be released throughout the body. While the blood
travels through the tissues and vessels it collects nutrients from the digestive system. The
blood is also collecting wastes and bi-products that will be filtered and excreted by the urinary
system. Finally the blood returns to the lungs where carbon dioxide, a waste product, is
released when we exhale.