OBJ: Given notes and activity sheet SWBAT explain the
difference between cell, tissue, organ, and organ system as
well as explain homeostasis with 70% accuracy.
DN: Collect SVQ#4 scantrons
ACT: Distribute Human Biology and Health Textbooks
Introduction to Cell, Tissue, Organ, Organ System and
homeostasis.
Text, read p. 6-11; Work on Body Organization &
Homeostasis Booklet
HW: Complete Body Organization & Homeostasis Booklet;
SMSDFE Exam, Wednesday, Feb 25.
LESSON NOTES
BODY ORGANIZATION
Cell→ Tissue →Organ→ Organ System
simple
complex
Cell: basic unit of an organism (life)
Tissue: group of cells that have the same function
(activity; do the same thing)
Types of tissues: muscle, nervous, connective,
epithelial (= covering; skin and organ lining)
Body Organization
NOTES
Organ: contains different tissues but performs a
specific function (activity);
example:
heart – pumps blood;
stomach – store food; begins breakdown solid food
Organ System: group of different organs working
together to perform a major (complex) function
Types of Human Organ Systems: Skeletal, Muscular,
Digestive, Circulatory (see below), Lymphatic,
Respiratory, Excretory, Nervous, Endocrine,
Reproductive, Immune
Example: Circulatory System – transports materials
to (nutrients) and from (waste) body cells (see text,
p.9)
Homeostasis vs. Dynamic
Equilibrium
Dynamic Equilibrium: a state of balance in
nonliving, physical systems
Homeostasis (Regulation): the process by
which an organism’s internal environment
is kept stable in spite of change in the
external environment
[a state of balance/stability in living,
biologic systems]
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