Transcript Human Body Systems

Human Body Systems
Organization of the Body
• List the levels of organization in a
multicellular organism, from
smallest to largest.
– Cells
– Tissues
– Organs
– Organ systems
Organization of the Body
• What are four types of tissues found
in the human body
• The four types of tissues are
•
•
•
•
muscle tissue,
epithelial tissue,
connective tissue,
nervous tissue
Organization of the Body
• The eye is an example of a (an) ____.
organ
•
Organization of the Body
What type of tissue covers interior
and exterior body surfaces?
• epithelial
Organization of the Body
What is a gland?
• A gland is a structure that makes
and secretes a particular product
such as saliva, sweat, or milk.
Organization of the Body
• What type of tissue connects body
parts?
• connective
Maintaining Homeostasis
• What is the process of maintaining a
controlled, stable internal
environment called?
• homeostasis
Maintaining Homeostasis
Maintaining Homeostasis
• Is the following sentence true or
false?
• The part of the brain that monitors
and controls body temperature is the
hypothalamus.
• true
Human Body Team
All the systems play a part. How do
they interact?
Which one is the most important?
Integumentary System
Skin, Hair and Nails
• covers and protects
every place on the body
• is the first line of defense
against invasion and
injury
• retains body heat yet,
have pores to release
excess heat and wastes
• retains moisture and
your body is almost 80%
water
Skeletal System
• Without this, you’d
have no shape or
structure
• ability to move!
• makes your red blood
cells that carry oxygen
to all the cells
• protects the precious
brain, heart and spinal
cord
Muscular System
• The heart is made
of cardiac muscle.
• The internal organs
are made of
smooth muscle.
• Without the
skeletal muscles
the bones couldn’t
move.
Respiratory System
• brings in the oxygen that is carried on the
red blood cells
• carries the CO2 (waste gas) out of the body.
• The circulatory system needs this for gas
exchange.
• The muscles need oxygen to move.
• The brain needs
oxygen to think.
Circulatory System
• Carries oxygen and nutrients to
every cell in the body
• Consists of the heart, the veins, the
arteries, capillaries and blood
• transports the white blood cells to all
the infections and injuries
• Without this, the oxygen and the CO2
in the body couldn’t reach the cells
or lungs.
Nervous System
I tell everything
what to do. I tell
the heart when to
beat, the body
when to move, the
digestive system to
add enzymes.
I am the leader.
Digestive/Excretory
System
• Without this
system, the body
would not be able
to obtain energy
and nutrients.
• It breaks down all
the food you eat
into usable
nutrients and
expels the
wastes.
Reproduction System
• Without this, there
wouldn’t be any
systems.
• I am how the
species continues.
Nervous system
Coordinates the body’s response to changes in its
internal and external environments
Skeletal system
Stores mineral reserves and provides a site for
blood cell formation
Integumentary
system
Serves as a barrier against infection and injury
Endocrine system
Eliminates wastes and maintains homeostasis
Lymphatic/Immune
systems
Helps protect body from disease.
Muscular system
Helps produce voluntary movement, circulate
blood, and move food
Reproductive
system
Produces reproductive cells
Respiratory system
Provides oxygen and removes carbon dioxide
Excretory system
Eliminates wastes and maintains homeostasis
Circulatory system
Brings materials to cells, fights infection, and helps
to regulate body temperature
Digestive system
Converts food so it can be used by cells