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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be made to encourage people to use their cars less and public transport more. Discuss possible ways to encourage the use of public transport. You should write at least 250 words. In a world of increasing environmental awareness improved public transport represents the way of the future. Although people do enjoy the convenience and privacy of traveling in their own private vehicles‚ in my opinion they may choose public transport if it fulfills certain conditions. These conditions fall into three
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PhysioEx – Exercise 9 Activity 1: 1. excretion and regulation 2. glomerular capillaries (glomerulus) & Bowman’s capsule 3. The filtrate flows from the Bowman’s capsule into the renal tubule called the proximal convoluted tubule then into the loop of Henle‚ and finally into the distal convoluted tubule: a. Proximal Convoluted Tubule b. Loop of Henle c. Distal Convoluted Tubule 4. When the radius of the afferent arteriole was decreased‚ the pressure and the filtration rate both decreased
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representation of the building or the structure for the developers. • Team Leader - management of Warehouse Operatives and Warehouse disciplines • Storeman - responsible for managing all functions of stock and equipment • Drivers - Deliver and transport goods and materials 3. Risk factors associated with poor housekeeping practices of facilities include injury by tripping‚ slipping‚ running into or being hit by falling objects‚ Possible security problems‚ Risk of damaging equipment‚ Emergency
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ACTIVITY ONE- Cell Transport Mechanisms and Permeability: Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also‚ membrane thickness
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body burns to maintain itself; sum of catabolism and anabolism; set of chemical reactions that occur in living things in order to maintain life. 2. endocrine 3. b. Thyroxine 4. Negative feedback mechanisms 5. c. Estrogen 6. a. Insulin 7. False 8. Type 2 Activity 1: Metabolism and Thyroid Hormone (pp. 60–64) 1h. 420 – 432 ml 1i. 1687 – 1734 Predict Question 1: The BMR of both remaining rats will be lower than the normal rat’s BMR Predict Question 2: The normal rat will become hyperthyroidic but
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0.00 0.00 0.00 0.00 0.02 0.25 1.75 Total Force 1.82 1.75 1.55 1.21 0.73 0.11 1.77 1.46 1.86 07/08/13 page 2 07/08/13 page 3 07/08/13 page 4 07/08/13 page 5 07/08/13 page 6 07/08/13 page 7 07/08/13 page 8 Post-lab Quiz Results You scored 60% by answering 3 out of 5 questions correctly. 1. When a skeletal muscle is stimulated and generates force but remains at a fixed length You correctly answered: d. the muscle is contracting isometrically. 2. Which
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ml450 ml 1830 ml O2/kg/hr | 244.6 grams 7.5 ml 450 ml 1839 ml O2/kg/hr | With TSHWeightMl O2 used in 1 minuteMl O2 used per hourMetabolic ratePalpation results | 249. 8 grams 7.8 ml468 ml1873 ml O2/kg/hr | 245.7 grams 6.2 ml 372 ml 1514 ml O2/kg/hr | 245.2 grams 7.4 ml 444 ml 1810 ml O2/kg/hr
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Case Study: Newsflash! Transport Proteins on Strike! 1. What is the meaning behind the PHOSPHOLIPIDS’ chant? Phospholipids make up most of the cell membrane‚ in a phospholipid bilayer. Phospholipid molecules form two layers‚ with the hydrophilic (water loving) head facing the extracellular fluid and the cytosol (intracellular) fluid‚ and the hydrophobic (not water loving) tails facing one another. The cell membrane is constructed in such a way that it is semipermeable‚ and allows oxygen
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Cells‚ Cell Division‚ and Cell Specialization Fundamentally Different Types of Cell Prokaryotic Cell- single celled: only DNA+ structure (“before nucleus”) E.g. zygote-complete DNA Eukaryotic Cell-multi-celled (“after nucleus”) Prokaryotes Eukaryotes DNA In “nucleoid” region Within membrane-bound nucleus Chromosomes Single‚ circular Multiple‚ linear Organelles None Membrane-bound organelles Size Usually smaller Usually larger- 50 times Organization Usually single-celled Often multicellular
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