Name __________________________________ Date _______________ Period __________
Partner’s Name _____________________________________
Title: Introductory Histology Lab
Purpose: To become familiar with the structure and function of the four major types of animal
tissues.
Background: Tissues are groups of specialized cells that work together for a particular
function. In humans, combinations of different types of tissues make up organs, and groups of
organs work together to form organ systems. For example, the digestive system includes the
stomach, small intestine, large intestine as well as other organs. Each of these organs is made up
of different tissues.
There are four main types of tissue—epithelial, muscle, nervous, and connective. Each type has
a particular function and can be found to some degree in most organs. Epithelial tissue covers
the outside of the body and lines the organs and cavities within the body. This tissue type serves
both as a barrier and a point of contact between the body and the outside environment. Muscle
tissue is made up of cells capable of contracting when stimulated by the nervous system. Muscle
allows for body movement as well as control of organ size and shape. Nervous tissue senses
stimuli and transmits impulses, and it processes information to formulate a response. Connective
tissue is a diverse group of tissues that link and support other tissues. Generally, cells in a
connective tissue secrete nonliving material, called a matrix, which actually performs the
functions of support and connection.
Materials:
Compound microscope
Prepared histology slides
Experimental Procedures:
1. Obtain a prepared slide from your teacher.
2. Focus the slide first under scanning power. Turn the nosepiece and focus using the low
power objective.
3. Turn the nosepiece to the high power objective. Remember to ONLY use FINE adjustment
knob when using high power.
4. Use the laminated reference sheets to ensure you are focusing on the correct part of the slide.
5. In the spaces provided, draw a picture of a few (2-3) cells that represent each of the four main
tissue types.
6. Complete the data table entitled Observations of Selected Animal Cells as Seen through the
Compound Microscope.
7. Repeat steps 1-6 with the remaining slides.
Organelles that may be visible in cells
Cell membrane
Nucleus
Cytoplasm
Results:
Observations of Selected Animal Cells as Seen through the Compound Microscope
Cell Type
Cell Shape
Organelles Visible
Amphibian Simple Columnar
Epithelial Cell
Human Simple Cuboidal
Epithelium
Mammal Adipose Tissue
Human Red Blood Cell
Human White Blood Cell
Compact Bone
Not applicable
Mammal Skeletal Muscle
Not applicable
Mammal Cardiac Muscle
Not applicable
Mammal Neuron, Motor
Nerve Cells
Mammal Elastic Cartilage
Simple Columnar Epithelium
Human Simple Cuboidal
Mammalian Adipose Tissue
Human Red Blood Cell
Human White Blood Cell
Compact Bone
Mammalian Skeletal Muscle
Mammalian Cardiac Muscle
Mammal Neuron, Motor Nerve Cells
Mammal Elastic Cartilage
Conclusions:
1. Animals possess four main tissue types. Name the four types (4 points).
2. Where in an animal’s body is epithelial tissue located? (1 point)
3. State two functions of epithelial tissue (2 points).
4. Where in an animals’ body would simple columnar epithelium be located? (1 point)
5. In general, what is the function of connective tissue? (1 point)
6. Animals possess many different kinds of connective tissue. List three different types (3
points).
7. Name two functions of adipose tissue (2 points)
8. Name the three types AND locations of muscular tissue (6 points).
9. What is one function of nervous tissue? (1 point)
10. Name one location of nervous tissue in an animal’s body (1 point)