Activity 1 Pre-Lab Quiz K+ inside a cell = 150 mM; K+ outside a cell = 5 mM Na+ inside a cell = 5 mM; Na+ outside a cell = 150 mM Stop & Think question What is the polarity of the resting membrane potential (voltage)? Negative What does it mean that the voltage just inside the membrane is negative? B Membrane of most cells contains K+ leak channels…..b What will happen to the resting membrane potential if the extracellular K+ concentration is increase? Less negative What happens
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We are able to visualize‚ feel‚ smell‚ and hear the world around us due to a system called the sensory system. All around the surface of our body we have detectors that are known as receptors. These receptors‚ in the form of cells‚ are specialized to capture specific forms of energy- whether heat‚ light‚ chemical‚ or mechanical (1). The environmental cues that are detected by our receptors on the surface of our body are then transformed into electrical signals‚ or nerve impulses‚ that can be sent
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EXERCISE 10: Acid-Base Balance Grading: True/False‚ Multiple-Choice‚ and Fill-in-the-blank type questions will be worth 1 point each whereas Short-answer type questions will be worth 2 points each. This lab will be worth a total of 45 points but will be converted to a percentage grade when registered in your “Gradebook”. |ACTIVITY 1: Hyperventilation |Answers | |A
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BIO 143 HUMAN PHYSIOLOGY REVIEW SHEET TEST 5: FALL 2012 Chapter 23: Ventilation - Be able to list & briefly describe the 4 primary pressures that are associated with ventilation: Atmospheric Pressure‚ Intra-alveolar Pressure‚ Pleural Pressure‚ Transpulmonary Pressure. - What ix external and internal respiration? - Be familiar with why ventilation occurs (b/c of pressure gradients between alveoli and outside atm.)‚ that air moves down a pressure gradient (high to low pressure) and why
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Problem Set 8 1.Your Aunt Imelda is thinking about opening a pub. She estimates that it would cost € 500 000 per year to rent the premises‚ buy a license to serve alcohol and to buy in enough Murphy’s Irish Stout from the brewery. In addition‚ she would have to leave her € 50 000 per year job as an accountant. a) Define opportunity cost. When making a decision between options A and B‚ the opportunity cost of choosing A is what you could have won if you would have chosen option B. That is‚ what
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PhysioEX notes Autorhythmicity- heart’s ability to trigger its own contractions Phase O- a lot like depolarization in neuronal action potentials. Sodium channels open‚ increase of sodium INTO cell. Phase 1- sodium channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200
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----------------------- Pituitary Gland (Hypophysis) Located in the hypophyseal fossa of the sella turcica of the sphenoid bone Function of melatonin: Coordinates body activities with sleep-wake cycles Anterior Pituitary (glandular tissues) Adenohypophysis Small cone shaped gland located in the roof of the third ventricle of the brain Pineal Gland Produces amine hormone melatoin Thyroid-stimulating hormone (TSH) or thyrotropin Follicle-stimulating
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Review Sheet Exercise 11 Blood Analysis NAME LAB DATE/TIME Hematocrit Determination The following questions refer to Activity 1: Hematocrit Determination. 1. List the following values from Chart 1: Hematocrit value for healthy male living at sea level in Boston = 48 Hematocrit value for healthy female living at sea level in Boston = 44 2. Were the values listed in question 1 within normal range? YES 3. Describe the difference between the male and the female hematocrit
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On the right in Figure 27 shown the power density spectral of noise measurements at low frequencies‚ from 1 Hz to 14 Hz and used commercial resistance of 1 kΩ to compare 2 different current generators. The curves in red color correspond KEITHLEY 2400 series and the curves in black color correspond to the ADRET current generator. The KEITHLEY generator slightly lower noise than ADRET generator. However‚ theoretically the differential measure with correct polarization can suppress this kind of noise
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Natalie Salaverria 01/21/11 LAB EXERCISE I After the first exercise : Simulating Simple diffusion Which Materials diffused from the left beaker to the right beaker? NaCl ‚ Urea ‚ Glucose Which did not ? Albumin Why ? Albumin’s Composition or charge was too great to diffuse through the membrane. After the 2nd activity : Simulating Dialysis What happens to the urea concentration in the left beaker (the Patient)? It diffused to the right beaker Why does this occur? The excess
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