Ch 13 - Section 1 Notes
How do the major systems function?
pg 161
6/4/14
New Vocabulary:
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Homeostasis- The maintenance of a stable
internal environment.
Stress- Reaction of your body to
challenging, threatening or disturbing
events.
Tissue:
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A tissue is composed of specialized cells
that perform a function in the body.
The human body has four major types of
tissues:
EPITHELIAL
TISSUE
Covers and
protects the
surfaces of your
body & lines the
internal organs.
Example: skin
cells
NERVOUS
TISSUE
Sends electrical
signals through
the body which
enables you to
think, hear and
see.
Example: brain
cells
MUSCLE TISSUE
Made of cells
that can
contract and
relax to
produce
movement.
Also protects
internal
organs.
CONNECTIVE
TISSUE
Connects
and
supports
parts of
your body.
The Human Body has 11 organ
systems:

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An organ is two or more
tissues working together
to perform a specific
function.
An organ system is two
or more organs working
together to perform a
major function.
The human body has 11
body systems.
STOMACH
DIGESTIVE SYSTEM
Organ Systems
Open to pg.511-515 in your science book
to write the functions of each system.
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Integumentary System
Muscular System
Skeletal System
Circulatory System
Respiratory System
Digestive System
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Excretory System
Immune System
Reproductive System
Nervous System
Endocrine system