Thursday, July 10, 2008

Lab Project: Build a Human Limb

For this lab project we needed to construct a human limb and show the different processes of and the part of cell function. I constructed the lower arm for this project which includes the Ulna, Radius, wrist and elbow joints. I also included a representation of the muscles in the lower arm. We also needed to include action potential and the different elements that go into it.






Here is a picture of the items that I used for this project:

2 large square tubing represents the Ulna and Radius

2 Joints represent the Trochlea and Captilium

2 Hinges represent the Wrist and Elbow Joints

CAT 5 cable represents the Sarcolemma and T Tubles

CAT 5 cable also represents the Myosin Strands

Zip Ties: (white) Acton Strands (black) Calcium

Washer represents the Cell Body

Springs represent the muscles in the arm (Carpal muscle groups)

Electical Wire represents the Axon, Myeline Sheath, and Axon Terminal
















Here is a diagram of a Neuron





















Here is a diagram of the propagation of an Action potential




















































The top half of this photo is when the myosin is sliding with the actin. Included in this photo is the cross-bridge for when the myosin obtains the Ca+. The bottoms half is a representation of the Sarcolemma and the T Tubule Membrane.

When these processes happen they all contribute to the action of muscles. Muscles need to have these processes in order to make contraction and movement complete. Action potential is needed because regulates the potassium and sodium ions, which help with movement.

1 comment:

Larry Frolich said...

Sarah Brantner
COMPENDIUM MAJOR TOPIC ONE: NERVOUS FUNCTION:
Great compendiums….good info, a few nice images….very accurate. You might give sources of your imags.

COMPENDIUM MAJOR TOPIC TWO: MOVEMENT:


LAB MAJOR TOPIC ONE: LEECH NEURONS: This lab looks great and glad you found it valuable….it is nice to see how those neurons light up in the fluorescent light.


LAB MAJOR TOPIC TWO: MUSCLE FUNCTION:
Great job on this lab also….good data well analyzed.


LAB PROJECT: LIMB MODEL: This is great, especially the way you put the limb on a real arm…how does that hand appear out of nowhere! This really shows how the pieces fit together. You might have explained more about actin-myosin and how muscle contraction happens…and then put that back into the limb itself showing how muscle contraction would have caused movement across the joint.



ETHICAL ISSUE ESSAY: ACTIVITY AND EXERCISE:
I didn’t see an essay for this unit. If you would still like to do it, I ‘ll consider it for full points…send me an e-mail when it’s ready if you want to still do it.

Sarah, great job on this unit. The compendiums and labs look great…a couple comments on the lab project and I didn’t see an ethical issue essay???
Keep it up,
LF