6 Autonomic Nervous System Parasympathetic NSSympathetic NSRest and DigestDecrease HR, BP, contraction strength/rate, increase systole durationFight or FlightIncrease HR, BP , contraction strength/rate, decrease systole duration
7 SA Node Firing Rate Altered by: Changes in autonomic nerve activitySympatheticVagalCirculating hormonesHyperthyroidismHypothyroidismSerum ion concentrationHyperkalemiaHypokalemiaCellular hypoxiaUsually from ischemiaDrugs
9 Amphibian Heart 2 atria 1 ventricle O2 and deO2 blood separated by conus arteriosis and timing of atrial contractions.Pressure differences is systemic and pulmonary circuits can allow O2 and deO2 blood to mix via an intercardiac shunt. Helps stabilize O2 content in blood, thermoregulate, and allow the skin to be used as a respiratory organ.Sinus venosus = SA node in mammals.
10 Homework Write a Results, and Discussion for this lab. Answer ALL questions within the text.
11 Course Reviews Please do them ASAP. Print the confirmation at the end. 5 extra credit points for completing this!!Please provide constructive criticism if you have any. I’m always trying to improve my teaching!