Tuesday, December 15, 2009
Tues-Day 1
Bio 3/6 - Bring in your last unit hw so that the grade may be entered.
We compared and contrasted ligaments (bone to bone, elastic) and tendons(muscle to bone, inelastic). We reviewed the various types of joints and the movement allowed by each type of joint. We then discussed and demonstrated how antagonistic muscle pairs, via their contractions, cause bones to move in opposite directions, flexing or extending.
We discussed joint diseases: arthritis and gout. We also discussed injuries to ligaments and tendons; a torn tendon can result in swelling and inflammation called tendonitis.
We discussed the three types of muscle tissue (smooth, cardiac, and skeletal), their functions, and their locations.
You were given your 100 point unit project with which you will develop your knowledge of the skeletal and muscular systems as well as get more practice APPLYING the scientific method. This project is due on Monday and will count as a test grade.
AP Chem- we discussed dimerization of odd-electron molecules and the reasons for the energy changes that occur during dimerization.
We then began to develop our all-encompassing molecular geometry/orbital hybridization/molecular polarity chart. We introduced the concept of orbital "hybridization", which is necessary to rationalize electronic geometry via electro-electron repulsion and energy minimization.
# posted by C @ 4:15 PM 
