Transcript Levels of Organization

Homeroom Warm Up
1-6-2015
choose 1 topic below and write 1 paragraph
1. What is your New Year’s resolution and explain
why you picked it and how you will accomplish
it.
Resolutiona decision to do or stop doing something, made or announced at
the New Year, which is traditionally considered a time for a fresh start.
2. My 2 weeks vacation from school was
________. I did __________.
Academic Enrichment Warm Up
1-6-2015
Which statement best explains why South America and
Africa are now thousands of miles apart?
a. Lithospheric plates moved the continents apart at a
rate of centimeters per year.
b. Ocean currents carried some land masses east and
some land masses west.
c. Tectonic plates slid together forming mountains that
forced the continents apart.
d. Strong winds continually pushed the land masses away
from each other.
Academic Enrichment Closure
1-8-13
Which of the following statements describes how two
organ systems work together?
A. The muscles of the muscular system contract and
relax.
B. The integumentary system protects the body from
disease.
C. The skeletal system and muscular system make it
possible to move.
D. The skeletal system and integumentary system
work together to produce blood cells.
Science Warm Up
1-6-15
Most plastics are made using products
manufactured at oil refineries. The
recycling of plastics most impacts Earth
by causing
A. an increase in the amount of fuel used in cars.
B. an increase in the amount of pollution in the
oceans.
C. a reduction in the amount of waste in landfills.
D. a reduction in the amount of carbon dioxide in
the atmosphere.
Academic Enrichment
Assignment
• Page Read pages 210-213 in textbook and
answer questions 1-8 on page 213….. Write
questions and answers
• TSW watch a 10 min video on the skeletal
system
• Closure
Homework
Due by 3:15 PM on Friday
Study Island assignment on Living Body
Systems. Must answer at least 20 questions.
Goal is to get 80% correct or more.
All Classes bring Science books to class on
tomorrow.
GLE
GLE 0707.1.2 Summarize how the
different levels of organization are
integrated within living systems.
GLE 0707.1.3 Describe the function of
different organ systems and how
collectively they enable complex
multicellular organisms to survive.
Levels of Organization
Ms. Stanford
7th Grade Science
Levels of Organization
Within multi-cellular organisms there is division of labor.
Division of labor means that the work (labor) of keeping the
organism alive is divided (division) among the different parts
of the body. Each part has a job to do and as each part does its
special job, it works in harmony with all the other parts.
The arrangement of specialized parts within a living thing is
sometimes referred to as levels of organization. Cells are the
first level of organization. Cells are the smallest unit that
can perform all life processes.
Cells: LOTS of Different Kinds!
Here are two examples. Can you guess what kind?
Second Level: Tissues
In any multi-cellular organism, cells rarely work alone. Cells that
are similar in structure and function are usually joined
together to form tissues. Tissues are the second level of
organization.
There are four basic/major types of tissues in the human body:
1.Muscle tissue
2. nerve tissue
3. connective tissue
4. epithelial tissue. (There are other kinds of tissues besides these.) Other
kinds of tissue include bone tissue (a strong solid tissue that gives you shape
and support) made of bone cells in your body form bone tissue. Blood cells in
your body are part of blood tissue, a liquid tissue responsible for transporting
food and oxygen throughout the body.
Cells
Here are some cells but if you look closely, you can see that they
all look similar. Nerve cells working together make nerve tissue,
and skin cells make up a special type of epithelial tissue.
Taken One At A Time….
Connective tissue connects
and supports parts of the
body. Blood, fat, ligaments,
cartilage, bones, and
tendons are all connective
tissues.
Nerve tissue carries messages
back and forth between the
brain and every other part of
the body. The brain, spinal
cord, and nerves are made up
of nerve tissue.
Epithelial tissue covers and lines
the surfaces of your body and
organs, inside and out. They
primarily serve as protective
barriers. Skin is one example.
Muscle tissue can contract, or
shorten. Because of this,
muscle tissue makes parts of
your body move.
Level Three: Organs
When a collection of different types of tissues work
together, they form an organ. Organs carry out specialized
functions of the body. There are many organs in the body.
How many can you name??
Level Four: Organ Systems
Each organ in your body is
part of an organ system, a
group of organs that work
together to perform a major
function.
For example, your heart is
part of your circulatory
system, which carries blood,
oxygen and other materials
throughout your body.
Besides the heart, blood
vessels are organs that work
in your circulatory system.
Cardiovascular
•The nervous system detects and
interprets information from the
environment outside the body and
from within the body; controls
most body functions. Brain,
Spinal Cord, Nerves
•The immune system aka
Lymphatic System fights off
disease.
•The excretory system aka
urinary system removes
wastes.
•The endocrine system
controls many body processes
by means of chemical
messages, like hormones.
The muscular system enables the
body to move; moves food
through the digestive system, and
keeps the heart beating.
The skeletal system supports
and protects the body, and
works with the muscular system
to allow movement; makes and
stores blood cells and stores
some other materials.
The integumentary system acts
as a barrier against infection &
injury. Skin, hair, nails
•The digestive system takes food
into the body, breaks the food
down into smaller particles, and
absorbs the digested materials.
•The respiratory system takes
oxygen into the body and
eliminates carbon dioxide.
Lungs, nasal passage, mouth
•The reproductive system
produces cells that can unite
with other cells to create
offspring; controls male and
female characteristics.
Science Closure
1-6-2015
Write down 1 sentence to sum up something
interesting you learned today.
Let’s Review….
• 1st Level: Cells working together form
• 2nd Level: Tissues, which can form
• 3rd Level: Organs, which work together to
form
• 4th Level: Organ Systems, which work
together to form
• 5th Level: Organisms!
The levels of organization from
simplest to most complex are:
•
•
•
•
•
Cells
Tissues
Organs
System
Organism
Science Closure
1-6-2015
Brain, Spinal Cord
Which organ system do the organs above
belong to?
A. endocrine
B. cardiovascular
C. musculoskeletal D. nervous