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Welcome to Day 8!Question 4Place the following levels of organization in order, beginning with the smallest unit to the biggest.
*organelle*organ system*tissue*organism
*Get out your Ch 1 Reading Guide
*organ*molecule*cell*atom
Copyright © 2010 Pearson Education, Inc.
MoleculeAtoms
Chemical level
Atoms combine to form molecules.
1
Figure 1.1, step 1
Copyright © 2010 Pearson Education, Inc.
OrganelleMoleculeAtoms
Chemical level
Atoms combine to form molecules.
Cellular level
Cells are made up of
molecules.
Smooth muscle cell
12
Figure 1.1, step 2
Copyright © 2010 Pearson Education, Inc.
OrganelleMoleculeAtoms
Chemical level
Atoms combine to form molecules.
Cellular level
Cells are made up of
molecules.
Tissue level
Tissues consist of similar
types of cells.
Smooth muscle cell
Smooth muscle tissue
12
3
Figure 1.1, step 3
Copyright © 2010 Pearson Education, Inc.
OrganelleMoleculeAtoms
Chemical level
Atoms combine to form molecules.
Cellular level
Cells are made up of
molecules.
Tissue level
Tissues consist of similar
types of cells.
Organ level
Organs are made up of different types
of tissues.
Smooth muscle cell
Smooth muscle tissue
Connective tissue
Blood vessel (organ)
Epithelial
tissue
Smooth muscle tissue
12
3
4
Figure 1.1, step 4
Copyright © 2010 Pearson Education, Inc.
Cardiovascular
system
OrganelleMoleculeAtoms
Chemical level
Atoms combine to form molecules.
Cellular level
Cells are made up of
molecules.
Tissue level
Tissues consist of similar
types of cells.
Organ level
Organs are made up of different types
of tissues.
Organ system level
Organ systems consist of different
organs that work together closely.
Smooth muscle cell
Smooth muscle tissue
Connective tissue
Blood vessel (organ)
Heart
Blood
vessels
Epithelial
tissue
Smooth muscle tissue
12
3
4
5
Figure 1.1, step 5
Copyright © 2010 Pearson Education, Inc.
Cardiovascular
system
OrganelleMoleculeAtoms
Chemical level
Atoms combine to form molecules.
Cellular level
Cells are made up of
molecules.
Tissue level
Tissues consist of similar
types of cells.
Organ level
Organs are made up of different types
of tissues.
Organ system level
Organ systems consist of different
organs that work together closely.
Organismal level
The human organism is made up
of many organ systems.
Smooth muscle cell
Smooth muscle tissue
Connective tissue
Blood vessel (organ)
Heart
Blood
vessels
Epithelial
tissue
Smooth muscle tissue
12
3
4
56
Figure 1.1, step 6
Organization of the
Human BodyCHAPTER 1 OVERVIEW
Unifying Themes
Interrelationships of body organ systems
Almost all systems work together in order to function
Homeostasis
The normal, most desirable condition of the body
Complementarity of structure and function
Function is dependent on structure, and the form of the
structure relates to the function
Copyright © 2010 Pearson Education, Inc.
Cardiovascular
system
OrganelleMoleculeAtoms
Chemical level
Atoms combine to form molecules.
Cellular level
Cells are made up of
molecules.
Tissue level
Tissues consist of similar
types of cells.
Organ level
Organs are made up of different types
of tissues.
Organ system level
Organ systems consist of different
organs that work together closely.
Organismal level
The human organism is made up
of many organ systems.
Smooth muscle cell
Smooth muscle tissue
Connective tissue
Blood vessel (organ)
Heart
Blood
vessels
Epithelial
tissue
Smooth muscle tissue
12
3
4
56
Figure 1.1, step 6
Homeostasis
Homeostasis is the ability of the body to maintain a
relatively constant internal environment, regardless
of environmental changes
If homeostasis is off = we get sick
We’ll talk about how the body works to prevent this
next time!
https://youtu.be/kvHWnJwBkmoMore terms to know!• Superficial–Closer to the surface of the
skin
• Deep–Away from the body surface
• Intermediate–Between a more medial and
more lateral structure
Now that you know…
Complete Anatomical Position and
Directional Terms Practice
Must be complete when you walk in
next class!