Download Title: Cells, Tissues, and Organs (L201) Prelab Check:

Cell Biology
L201
Title: Cells, Tissues, and Organs (L201)
Background:
The human body is a very organized system. However, there are many different levels of
organization. The cell is the smallest unit of structure and function of living things. Examples of cells
include muscle cells, nerve cells, and red blood cells. A bunch of cells that look alike and work together are
called a tissue. Four types of tissue are muscle tissue, epithelial tissue, connective tissue, and nerve
tissue. Each of these tissues has different functions.
o Your bicep is made of muscle tissue, and it helps you move.
o Your skin is made of epithelial tissue, and it protects your body.
o Your tendons and ligaments are made of connective tissue, and they help hold your body
together. Your brain is made of nerve tissue, and it sends and receives messages.
When these tissues work together they form organs. Organs are made of many, many cells that
form different types of tissues. Your heart is an organ that is made of several different types of tissue.
Connective tissue helps hold it together. Muscle tissue squeezes your blood into your arteries, causing
blood pressure. Nerve tissue allows your heart to communicate with your brain.
Your heart is a part of a larger organ system, called your circulatory system. This system is
responsible for “circulating” or moving blood around your body.
Prelab Check:
1. Put these in order from largest to smallest—Organ System, Organ, Cell, Tissue:
2. What are the four types of tissue?
3. Name two tissues that make up your heart.
Lab Question: What are the differences among cells, tissues, and organs?
Materials:
• Lab paper
• Microscope Slides (unicellular and
tissue)
• Pencil
• Colored Pencils
• Microscopes
Procedure:
1. Use microscopes to magnify slides
a. Draw Cells and tissues
2. Answer lab questions
3. Clean the lab.
4. Grade yourself on the lab rubric,
before you hand in your lab.
Data:
Draw 1 Tissue slide (label with magnification and slide name)
Draw 1 unicellular organism slide (label with magnification and slide name)
Draw a picture of one organ (label with the name of the organ)
Color your drawings.
Conclusion:
Answer the questions on your paper.