Unit 6 Marzano

Shark Attack

(Summarizing and Note-taking)

Read the story on this website: http://www.sciencecases.org/shark/shark.asp

Answer the following questions:

1. Identify at least five organ systems in this region of the arm that the surgeon would have marked for reattachment.

✓ Circulatory

✓ Muscular

✓ Nervous

✓ Skeletal

✓ Integumentary

2. List the names of the specific structures that had to be reattached.

✓ Humerus

✓ Biceps brachii, brachialis, triceps, tendon of the coracobrachialis

✓ Median nerve, ulnar nerve, radial nerve, musculocutaneous nerve, antebrachial cutaneous nerves

✓ Brachial artery, superior and inferior collateral artery, profunda brachii artery and veins, cephalic vein, and basilic vein

3. What organ system was most likely not reattached? Explain.

✓ Lymphatic, because the vessels are very small and hard to find.  Also the surgeons need to get the blood flowing as quickly as possible and not take the time to reattach the lymphatic vessels, which are not as critical.

4. Why was a clean bite so important?

✓ Ragged edges would make ends of blood vessels and nerves difficult to identify and put together, while clean edges would facilitate identification and reattachment

5. Why was the bone shortened?

✓ To cut off the damaged area and to avoid stretching the severed blood vessels and nerves

6. Identify the movements associated with the arm, forearm, wrist, and fingers.

✓ Flexing, extension, abduction, adduction, grasping, and the mobility of individual fingers

7. Explain how the movements of the reattached arm might be altered after the reattachment.

✓ It will be decreased, because not all nerve fibers are reconnected or can regenerate

8. Define collateral circulation and identify the regions of collateral circulation that would be found in the upper extremity.

✓...