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Grade 8 – Structure of Living Things – Daily Log
Name
Date
Expectation
Jojo R
9-30-09
We are learning to...
1. Identify how the body is organized into cells, tissues, organs, and organ systems.
2. Identify the major functions of tissues in the body.
Warm-up
What is the relationship between cells, tissues, and organs? Give an example within the
human body.
 These are all related because each one makes up and supports the others. If we
didn’t have one of them our body wouldn’t function the same. Our cells make up
our tissue and our tissue make up our organs. We couldn’t survive without these
important things.
Activities
1. As you complete the dissection of the chicken wing answer the questions.
a.




Examine the outside of the chicken wing. Describe it.
Bumpy surface(feather would be)
Off-white color
Pinkish on the edges
Bone is crocked shaped
b. What kind of tissue is the skin made of? What is its function?
 Epithelial tissue
 Its function is to protect the body from harm and make the body waterproof
c. What kind of cells is the skin made of? What is the function? Why are the cells in
this tissue flat and all connected together?
 Epithelial cells
 To protect what’s inside the body from harm
 To stay tight together and pile on to create barrier from the outside
d. Use the scalpel to cut open the chicken wing from tip to tip. Then pry open the
wing.
e. Locate the clear tissue connecting the skin to the muscle. What kind of tissue is
this? What is its function?
 Connective tissue
 Connect the skin to the muscle or the bone
 Without our skin would slide off our body
f. Locate any yellowish globs of tissue. This is fat tissue. What kind of cells is this
made of (both names)? What is the function of this tissue? Why are these cells
globular, with a lot of empty space in them?
 Adipose, fat cells
 To store energy for later
 Need space to store everything
g. Why would the chicken wing need a lot of fat tissue in it?
 The wing moves the most so it needs the most energy
h. Locate the pinkish muscle tissue. Do you think this is striated, cardiac, or smooth
muscle? Why?
 Striated muscle moves things you think about,cardiac is found in the heart,
smooth muscle does things you don’t think about
i. What types of cells is muscle tissue made of? Why do these cells have such a long,
stringy shape?
 Muscle cells
 Need to expand
j. Locate any long , white tissue that holds muscles to other muscles. These are
tendons. What type of tissue are they?
 Connective tissue
k. Locate the bones. What types of cells are these bones made of (both names)?
What is their function?
 Bone, osteosytes
 Structure and support
l. Try the pull the bones apart. Are they easy to pull apart?
 No
m. The bones are held together by ligaments. What kind of tissue are ligaments made
of?
 Connective tissue
n. At the end of each bone you will find white connective tissue called cartilage.
What is the function of this type of tissue?
 To protect joints
o. In your observation of the chicken wing did you find any blood tissue? What
types of cells are in blood? What are their functions? Why does a chicken wing
need blood tissue to flow through it?
 Red blood cells(carry oxygen’s and nutrients throughout the body) and
white blood cells( kill infections)
 To bring oxygen and nutrients to bring to the wing to keep the cells healthy
and do their function
2. Upon completion of the dissection clean up.
a. Throw away the newspaper, paper plate, paper towels, gloves, and all parts of the
chicken wing.
b. Place all dissecting instruments in the bin on the front table.
c. Wash your lab area with a disinfectant wipe.
d. Wash your hands thoroughly.
3. Make sure everyone in your group has a copy of the daily log posted to their wiki page.
4. Use the information in the daily log to complete the homework assignment. It is due on
Monday, 10-5-09.
Cool-down
None
HW Assignment Use RASE to answer each of the following questions. Post your answers to the wiki. Due
Monday, 10-5-09.
1. Why is a chicken wing considered to be an organ?
2. What tissues are found in a chicken wing and how does each help the wing do its job?
3. How do the different tissues found in the wing work together and help each other?
HW Completion