SNC2D: Cells, Tissues and Living Systems
The Hierarchy of Structure in Animals
Nelson Science Perspectives 3.1 pgs. 73- 79
Levels of Organization in the Animal Body
Cell

_________________ unit of life
Tissue
 a __________________ of ____________cells that perform a function
Organ

a structure composed of __________________________ working together to
perform a complex body function
Organ System

a system of _______________________ organs and structures that work
together to perform a major body function such as _______________.
The Four Main Types of Animal Tissue
nervous tissue
Found in:
Function:
SNC2D: Cells, Tissues and Living Systems
Found in:
Function:
Homework
Match the tissue type with the function.
Tissue Type
Connective
Nervous Tissue
Muscle Tissue
Epithelial Tissue
___a____
___d____
___b____
___c____
Function
a) Supporting & transporting
b) Movement
c) Covering and lining
d) Communicating
1. Explain the role of cell specialization in the development of tissues.
Specialized cells that are different in shape, content and function form different
tissues
2. What is a stem cell? Explain why these cells are of great interest to researchers.
A cell that can differentiate into many different types of cells, which may be of use in
the development of treatment for many kinds of injuries and diseases
3. What are two characteristics of stem cells?
Self-renewal and unspecialized
4. What type of tissue would you expect to find in the stem of a plant? Explain your
answer.
Connective tissue – provides support, rigid structure for the stem of the plant
5. Name four types of specialized animal tissues. What is the function of each type
of tissue?
Connective – supporting
Nervous – communicating
Epithelial – covering and lining
Muscle - movement