1. Assignment # Levels of Organization
Biology
Mrs. McCarthy
Thursday, April 27, 2017

2. I. Levels of organization in the body
Cells
Tissue
Epithelial, Connective, Muscular, Nervous
C. Organs
Stomach, Liver, Heart
D. Organ Systems
Examples include digestive and circulatory systems

3. II. Tissues in the Human Body
Epithelial
Covering or lining tissues
Connective
Joins, stores and supports
Muscle
Internal and external movement
Nervous
Conducts electrical signals

4. III. Human Organ Systems
Skeletal System
Functions
Support
Protection
Attachment

5. III. Human Organ Systems
B. Muscular System
1. Functions
a. Movement
b. Posture
C. Joint Stability

6. III. Human Body Systems C. Circulatory system 1. Functions
a. Transport of oxygen, nutrients, and hormones
b. Transports waste products
c. Contains cells that fight infections

7. III. Human Body Systems D. Immune System 1. Functions
a. Protection against disease
b. absorption of excess fluid
E. Respiratory System
a. Gas Exchange (O2 and CO2)
b. pH balance

8. III. Human Body System F. Digestive System 1. Functions
a. absorption of nutrients
b. breaking down of food
G. Excretory System
a. Collection of liquid waste
b. Storage of wastes
c. Disposal of wastes
d. water regulation

9. III. Human Body Systems H. Reproductive System 1. Functions
a. Produce hormones
b. Produce egg and sperm cells
I. Endocrine System
Functions
Hormone regulation
Regulates metabolism

10. III. Human Body Systems J. Nervous System 1. Functions
a. control movements
b. control reflexes
K. Integumentary System
a. protection
b. insulation

11. IV. Homeostasis- the ability to maintain a constant internal environment
A. Self Adjusting
1. Gains and losses must balance
B. Response alters internal conditions based on stimuli
1. Receptor, control center, effector
2. Feedback loops
a. Negative
b. Positive