Dissection: Definition: The process of careful separation for detailed examination & analysis. TAKE YOUR TIME! Look BEFORE you cut!
Fetal Pig After external examination, make your initial cuts as shown (follow your lab manual). http://www.ekcsk12.org/science/lelab/incisionsfetalpig.gif
Internal Anatomy Following the lab manual, carefully dissect your specimen. Find all features listed on your “Checklist of Structures”. http://home.satx.rr.com/christenson/Churchill%20Biology/dissec13.jpg
Fetal Heart vs. Adult Heart Is there a difference? Why is there a difference? ….Think about it!
NORMAL HEART (Adult) NORMAL HEART www.mirage-samoyeds.com/ heart.htm
DEMO: Sheep Heart Dissection External Examination Use the demonstration sheep heart to complete your “Heart Diagram” Handout. http://science.tjc.edu/images/preserved_heart/cut_heart_anterior_label.jpg
TODAY’S PLAN: 1.Observe histology slides (8). Sketch & label on your “Tissue Types Handout”. (use your lab manual as a guide, Ex. 32). 2.Fetal Pig Dissection: done in pairs. Follow handout & use your manual, Ex. 33, 34*, 35. Identify all structures on the “Checklist of Structures for the Fetal Pig Dissection”. 3. Observe DEMOs: Sheep Heart, Brain, Shark.
Post-Lab Assignment: To be completed TODAY: (1) histology slide sketches, (2) I.D. pig anatomy, (3) adult heart diagram. To be turned in NEXT WEEK: Lab Manual Questions Exercise 34, pages 573-574.
CLEAN UP! Dispose of all specimens in the RED BIOHAZARD BAG/BOX provided. Wash all dissection tools & set out to dry. Wipe down your lab bench. Wash your hands before leaving.