chicken dissection

Name _______________________  Chicken Dissection

Identifying Four Types of Tissues

Pre-Lab 1. What What are the the four majo majorr categori categories es of tissue tissues? s?  ___________________________________________________________________________  2. Which Which tissue tissue has been been the the easies easiestt for you you to lear learn? n? WHY?  ___________________________________________________________________________   ___________________________________________________________________________  3. Which tissue has been the most difficult difficult for you to learn? learn? WHY?  ___________________________________________________________________________   ___________________________________________________________________________  Lab Materials: Piece of Chicken Wax Paper  Forceps Newspaper  Blunt Ended Probe Cleaning Supplies Dissecting Scissors Procedure: 1. Lay down down and and spread spread out newsp newspape aperr. 2. Lay a piece piece of of wax paper paper on on top of the the newspa newspaper per.. 3. Place Place the piece piece of chicke chicken n on the newspa newspaper per.. 4. Carefully remove remove the outer outer layer by lifting lifting it with your your fingers and and VERY SLOWLY SLOWLY pulling pulling it off the rest of the piece of chicken. 5. This is the epidermis and dermis. The epidermis is composed of stratified squamous tissue. It is responsible for providing a waterproof barrier to germs. The dermis is composed of areolar tissue and dense, irregular connective tissue. 6. Make the followin following g obse observat rvations ions:: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  7. Look for for yellowish yellowish to white white masses masses on on the meat of of the chicken chicken just just under under the skin. skin. This is called adipose. Adipose is a connective tissue that provides insulation, protection and energy storage. 8. Make the followin following g obse observat rvations ions:: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  9. Observe the thin, thin, transparent transparent material material that covers covers the meat. This material material is called called fascia. fascia. Fascia is dense fibrous connective tissue. It helps connects muscle to skin and also compartmentalize muscles. 10.Make 10. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______ 

11. Use your fingers and the blunt ended probe to separate several bundles of meat. Meat is actually skeletal muscle. Muscles are responsible for movement. movement. 12.Make 12. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  13.Look at the tough white bands at the ends of the bundles of muscle which extend from the muscle end to the bone. This is a tendon. Tendons are a type of dense fibrous connective tissue. Tough white bands that connect two bones together are ligaments. Look for a ligament when you remove the muscle. muscle. It has a similar appearance to tendons. 14.Make 14. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  15.Carefully separate the rest of the muscles and look for a thick, red-to-white tube that lies next to the bone. This is a blood vessel. If it is thick and elastic, it is an artery. If it is thin and flat, it is a vein. Blood vessels contain epithelial, connective and smooth muscle tissues. Blood vessels transport blood (a type of connective tissue) throughout the body. body. 16.Make 16. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  17.At the same time that you are looking for blood vessels, you may also look for a thin white thread. This is a nerve. Nerves relay impulses to and from the brain. 18.Make 18. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  19. Remove the muscle from the chicken leg completely. completely. Examine a bone. Bone is a connective tissue that is also called osseous tissue. It provides internal support, protection, and something for muscles to attach to. 20.Make 20. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  21. Examine the cartilage at the end of the bone. It is hyaline cartilage (a type of connective tissue). Hyaline cartilage cushions joints and reduces friction between bones. bones. 22.Make 22. Make the following observations: a. Position: Position: __________ _________________ _______________ _______________ _______________ _______________ ______________ _____________  ______  b. Color: ______________ ______________________ _______________ ______________ _______________ _______________ _______________ __________  __  c. Unique Features: Features: ______________ _____________________ ______________ _______________ _______________ _______________ _________  _  d. Texture: _______________ ______________________ _______________ _______________ _______________ _______________ ______________  _______  EVERYTHING. Wrap the chicken parts in the wax paper and and newspaper. 23. CLEAN UP EVERYTHING. Throw it away in the trashcan. Clean the table with solution given by Mrs. Latham and wash your hands.