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    Physio Ex 9.0 Exercsie 3

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    PhysioEx 9.0 Exercise 3 Neurophysiology of Nerve Impulses A C T I V I T Y 1 The Resting Membrane Potential 1. Explain why increasing extracellular K_ reduces the net diffusion of K_ out of the neuron through the K_ leak channels. Increasing the extracellular potassium reduces the concentration gradient‚ and less potassium diffuses out of the neuron and into the cell. 2. Explain why increasing extracellular K_ causes the membrane potential to change to a less negative value.

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    Physio Ex 8

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    E 3 Neurophysiology of Nerve Impulses O B J E C T I V E S 1. To define the following terms: irritability‚ conductivity‚ resting membrane potential‚ polarized‚ sodium-potassium pump‚ threshold stimulus‚ depolarization‚ action potential‚ repolarization‚ hyperpolarization‚ absolute refractory period‚ relative refractory period‚ nerve impulse‚ compound nerve action potential‚ and conduction velocity. 2. To list at least four different stimuli capable of generating an action potential. 3. To list

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    Physio Ex 9.0

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    REVIEW SHEET EXERCISE 4 Endocrine System Physiology NAME: LAB TIME/DATE: Metabolism The following questions refer to Activity 1: Determining Baseline Metabolic Rates. 1. Which rat had the fastest baseline metabolic rate? The normal rat had the fastest baseline metabolic rate. 2. Compare the baseline metabolic rates for the thyroidectomized rat and the normal rat and explain your results. The normal rat’s baseline metabolic rate was faster than that of the thyroidectomized rat’s

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    Physio Ex 10

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    Exercise 10: Acid-Base Balance: Activity 1: Hyperventilation Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The fastest compensatory mechanism for maintaining pH homeostasis in the human body is You correctly answered: c. the chemical buffering system. 2. An increase in hydrogen ion concentration would You correctly answered: d. decrease pH. 3. The amount of carbon dioxide in the blood is measured in You correctly answered: b. mm Hg. 4. The reaction

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    Physio Ex 6

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    Nancy Yedanapalli physio ex Activity 6 1. Explain why the larger waves seen on the oscilloscope represent ventricular contraction. a. The ventricular contraction is of greater force than the atrial contraction‚ since the ventricular contraction functions to send blood throughout the entire body (systemic circulation)‚ where as the contraction of the atrium send blood only to the lungs and rest of the the heart (pulmonary circulation). 2. Explain why the amplitude

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    Physio Ex 9.0

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    ACTIVITY 1: Simulating Dialysis (Simple Diffusion) Answers 1. The molecular weight of urea is approximately 60. Which of the membranes can it pass through? a. 50 MWCO membrane b. 100 MWCO membrane c. 200 MWCO membrane d. Both the 100 and 200 MWCO membranes D. Both the 100 and 200 MWCO membranes 2. True or False: A solution containing glucose will diffuse faster through a 200 MWCO membrane if it is heated. True 3. The molecular weight of carbon C is 12; the molecular weight of hydrogen

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    Questions to Accompany Physio-Ex: Cardiovascular Dynamics 1. Describe the relationship between blood pressure and blood flow. Blood flow is the amount of blood flowing through a vessel‚ tissue‚ or organ during a given period of time and Blood pressure is the force exerted on a vessel wall by the blood traveling through it. 2. Describe the relationship between blood viscosity and blood flow. As blood viscosity increases‚ blood flow decreases. 3. Describe the relationship between vessel

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    Exercise 1: Cell Transport Mechanisms and Permeability: Activity 5: Simulating Active Transport Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The movement of sodium and potassium maintained by the Na+ -K+ pump You correctly answered: e. requires energy and is against a concentration gradient. 2. The sodium-potassium pump is classified as a(n) You correctly answered: a. antiporter. 3. The sodium-potassium pump moves _____ sodium ions and _____ potassium

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    Exercise 11: Blood Analysis: Activity 1: Hematocrit Determination Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. Hematocrit Your answer : a. refers to the percentage of white blood cells (WBCs) in a sample of whole blood. Correct answer: b. of 40 means that 40% of the volume of blood consists of RBCs. 2. A buffy coat layer You correctly answered: d. is all of the above. 3. The diagnosis of anemia indicates You correctly answered: a. a lower-than-normal

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    PhysioEx 9 Review Sheet

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    M09_ZAO2177_01_SE_CH09.QXD 3/4/11 2:08 AM Page 143 R E V I E W S H E E T EXERCISE NAME ________________________________ LAB TIME/DATE _______________________ A C T I V I T Y 1 9 Renal System Physiology The Effect of Arteriole Radius on Glomerular Filtration 1. What are two primary functions of the kidney? ____________________________________________________________ __________________________________________________________________________________________________ 2. What are the components

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