1. Tyson Family Lecture on the Preservation and Restoration of Southern Ecosystems Thursday, Nov. 1, 7 p.m. Olin Teaching Theater, Franklin W. Olin Building Rhett Johnson, founder and president emeritus of the Longleaf Alliance, which is dedicated to the conservation of longleaf pine ecosystems, will talk about his efforts in the movement to restore longleaf pine back to its native Southeastern range. The program is the first of Wofford’s Tyson Family Lecture on the Preservation and Restoration of Southern Ecosystems. It is presented by Wofford’s Environmental Studies Program. Rhett Johnson, Director of the Longleaf Alliance

2. 1QQ for 8:30 31Oct Write each letter and circle the letter of correct statements. a)Corticobulbar tracts control movements of the face. b)Huntington’s chorea is characterized by involuntary purposeless jerky movements and is associated with disruptions in cerebellar function. c)Muscle spindle afferents monitor skeletal muscle tension. d) Gamma motoneurons cause extrafusal myofibers to contract. e)In the patellar stretch reflex, motoneurons for antagonistic muscles would be inhibited.

3. 1QQ #22 for 10:30 Write each letter and circle the letter of correct statements. a)Corticobulbar tracts control movements of the distal extremities. b)Huntington’s chorea is characterized by involuntary purposeless jerky movements and is associated with disruptions in cerebellar function. c)Muscle spindle afferents monitor skeletal muscle tension. d) Gamma motoneurons cause extrafusal myofibers to contract. e)In the patellar stretch reflex, motoneurons for antagonistic muscles would be inhibited.

4. 1QQ#22 for 11:30 Write each letter and circle the letter of correct statements. a)Corticobulbar tracts control movements of the distal extremities. b)Deficits in the ability to point to a spot on a map may indicate a disruption in cerebellar function. c)Muscle spindle afferents monitor skeletal muscle stretch. d) Alpha motoneurons cause intrafusal myofibers to contract. e)In the crossed-extensor reflex, motoneurons for flexor muscles in the contralateral leg would be inhibited.

5. Figure 9.34 Special situation: Dephosphorylation & latch bridge from SR and influx during Action Potential or graded potential Graded potentials result in graded contractions Slow twitch of SM due to slow action of myosin ATPase. Lack troponin Excitation-contraction coupling in Smooth Muscles Ca ++

6. 31 October 12 Begin Ch 12 Cardiovascular Physiology 6 sections p. 353-433 2 CV labs: 1 Frog heart, 1 Human EKG and Blood Pressure

7. Was there ever a time when you didn’t have a heart?

8. When did you get a heart? Why did you need a heart?

9. What does the Circulatory System Circulate? S 2 Nutrients, water and gases that enter. Substances that move from cell to cell. Wastes that must be eliminated to the outside. What if the heart stops beating? 5-10 seconds of zero blood flow to brain = loss of consciousness (hypoxia) 5-10 minutes = permanent brain damage

10. What does the Circulatory System Circulate? Water and ions Nutrients: glucose, fatty acids, ketones, nucleic acids, amino acids Wastes Signaling molecules: hormones and cytokines Security cells and molecules: leukocytes and antibodies Gases: CO 2 and O 2 Formed Elements: Cells and Cell Fragments –Erythrocytes, Leukocytes, Thrombocytes = Platelets Other roles of the Cardiovascular System Thermoregulation Blood Clotting Reproduction (ex: penile erection) S 2

11. SS 1 Filtration Secretion Reabsorption

12. Fig. 12.02 Arteries..away from heart Veins..return to heart Regional blood flow determined by arteries and arterioles. Resting Cardiac Output = 5L/min for each side! S 4 Red = highly oxygenated blood Blue = blood with less oxygen.

13. What’s missing? Microcirculation Pulmonary circuit Systemic Circuit CO = 5 liters/min Exchange Vessels Resistance Vessels Capacitance vessels S 6 Portal Systems have a modified sequence of vessels. Arterial Blood Pressure

14. Hypothalamo-hypophyseal portal system

15. Hepatic portal system

16. What makes blood move (flow)? A Pressure Gradient Where is the pressure the highest? Where is the pressure the lowest? What creates the pressure? Flow = Q = ∆P What deters flows? Resistance R = 8Lη/πr 4

17. Smooth muscles determine radius

18. F=Q=ΔP/R Flow = Pressure gradient/Resistance from Ohm’s Law (V=IR) R = 8Lη/πr 4 Q= ΔP πr 4 8Lη Poiseulle’s equation S 8 Double radius … 16x flow Half radius….1/16 th flow R = 8Lη/πr 4