Friday, 23 September Chapter 6 Nervous System A and B Lab next week: Four more cases in endocrinology Test # 1 Monday, October 3. Test # Study Guide Physiology Peer Tutors (free) via [email protected] Arsalaan Salehani, Marshal Diven, Ashlee Price, Stephanie Hoffer, Sean Nguyen, and David Wynn. 1QQ # 8 for 8:30 1) A woman presents with elevated plasma levels of ACTH and Cortisol. Which other symptoms are expected: a)Low levels of plasma fatty acids
b)Heightened resistance to infection c)High blood pressure d)Enlargement of facial bones and hands and feet e)Random episodes of intense sweating with no apparent trigger. 1QQ # 8 for 9:30 1) During a visit with her physician, a woman complains of random episodes of intense sweating with no apparent trigger, high susceptibility to infection, and very irregular menstrual cycles. She has elevated blood pressure ( 140/90) and elevated levels of fatty acids in her plasma. You realize these symptoms are characteristic of a)menopause
CRH from Hypothalamus S8 Physical trauma Prolonged exposure to cold Prolonged intense exercise Infection Sleep deprivation Pain
Fright Emotional distress ACTH from Ant. Pit Cortisol secretion from Adrenal Cortex Mobilize fuel from muscle & adipose tissue
Suppress non-essential functions (reproduction & growth) Suppress inflammatory & immune responses Potentiates response to EPI (vascular smooth muscle) A though-provoking chapter question: Suppose a long distance hiker has been backpacking 12-15 miles per day with a 40
pound backpack for several weeks. Blood tests reveal her levels of vasopressin, cortisol, aldosterone, and ACTH to be higher than that from a blood sample before she began the trek. How does each of these hormones contribute to her good health during this extended period of moderate stress? http://www.npr.org/2011/08/24/139920320/no-relief-in-sight-for-somali-refugees-in-kenya
A likely take-home question for Test # 1 S 10 Communication in The Vertebrate NS Reflexes require some part of the CNS (i.e. frog lab) Blood pressure
Blood gases and pH Muscle stretch Pain Peripheral nerves are mixed (have afferent & efferent axons) Signaling over short and long distances Skin temperature Hair movement
Light, Taste, Odor Touch, Pain, Temperature, Etc. Dimensions of neurons S 11 If Nodes of Ranvier are 1 mm apart: How many Schwann cells to myelinate the 2 meters of a sensory axon from hoof to dorsal root
ganglion near spinal cord? How many oligodendries to myelinate the 2 meters of the sensory axon ascending in spinal cord to brain? Sensory (afferent) neurons from hoof to brain Descending neurons
(interneurons) from brain to spinal cord Fig. 06.03 S 12 Orthograde = anterograde retrograde
Axonal Transport S 13 Orthograde = Anterograde = from soma to terminals slow1-2 mm/day fast ..200-400 mm/day (kinesin) Retrograde = from terminals to soma fast.200-400 mm/day (dynein)
What gets transported and why? Axonal transport is too slow for rapid signaling, so Who Cares? Alayna Davis October 1992 Age 5 October 31, 1992
October 1998 Regeneration in CNS? So how can PNS axon regenerate and what prevents CNS axons from regenerating? Bioelectricity is chemistry + physics
Membrane potentials Ohms law Resting Membrane Potential The Nernst Equation The Goldman Equation Who
Cares? Cortical vesicle exocytosis during fertilization leads to envelope elevationA, prior to fertilization (left), the proteinaceous vitelline coat of the sea urchin egg of Lytechinus pictus is not visible in this differential interference contrast image. Zimmerberg J et al. J Physiol 1999;520:15-21 1999 by The Physiological Society
IMMERSION Louis Bruce - HREF Oliver, Danny Mike Brown, Alex Goldenberg, Alex Jasso, Jeff Mallet, Heinz Saurer, Greg Springer, Kollin Tierling, and Steve Vassallo provided assistance with equipment tutorials, insights, machining help, and moral support. Also, Immersion test subjects.
What legal methods are available for transferring ownership? Will a legal opinion be of value (recommended if there may be a challenge)? How will a value be set for any equipment or property changing hands? ... Public Utility Mergers and...
Autism is a complex, developmental disability that is defined by 3 areas of significant impairment: ... People with Autism can not have relationships or show affection: Not all people with Autism prefer to be alone, and some are extremely social....
C&E Unit 1: Foundations of American GovernmentLesson 4: The Role of Government: Federalism: A Balance of State & National Powers. Performance Task. Make a propaganda poster urging your friends to either support or oppose ratification of the constitution.
Grammar Notes and Mini-Lessons. Warm-up. Complete Exercise A, #1-5 on page 264. ... In ninth grade, we read the story The Most Dangerous Game out of our anthology, Glencoe Literature: The Reader's Choice. ... which he flew from New York...
Indoor League Captains Pre Season Meeting September 2007 Indoor League Management Team Convener Tim Baigent [email protected] Administrator Dawn Dinsdale [email protected] Head referee Andy Weston [email protected] League Overview Our indoor program is starting its 4th season We offer two seasons for...