Paige Wicks-Niehaus A & P II Review Sheet 38 (1-7‚ 9-17‚ 19‚ 20) 10/02/2011 1. Mucosa – epithelium‚ lamina propria‚ muscularis mucosae; secretion‚ absorption‚ protection Submucosa – nutrition‚ protection Muscularis externa – regulates GI motility Serosa or Adventitia – visceral peritoneum; reduce friction‚ anchor/protect organs 2. Alimentary‚ digestive 3. It can expand and contract; number of layers 4. Replaced by smooth muscle 5. Large intestine breaks stuff down‚ colon
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PHYSIO EX 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through the
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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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Under these conditions‚ does the fluid flow through the nephron? >>No! No urine was collected which indicates no fluid flows through the nephron. 3. What is the glomerular filtration rate? >>The glomerular filtration rate is 0 which means the glomeruli are not carrying out any filtration task. 4. How does it compare to your baseline data‚ and why? >>The glomerular filtration rate in baseline data is 124.99 which indicate functional glomeruli. The data support
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Exercise 2: Skeletal Muscle Physiology: Activity 2: The Effect of Stimulus Voltage on Skeletal Muscle Contraction Lab Report Pre-lab Quiz 1. Skeletal muscle fibers are innervated (stimulated) by c. motor neurons. 2. A single action potential propagating down a motor axon results in d. a single action potential and a single contractile event in the muscle fibers it innervates. 3. In resting skeletal muscle‚ calcium is stored in c. the sarcoplasmic reticulum. 4. During the latent period
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Review Sheet Exercise I: Survey of Higher Microorganisms: Protozoa‚ Fungi‚ and Helminths Protozoa (group of Kingdom Protista) 1. Amoeba a. nucleus- dark center of the cell b. food vacuole- They feed by taking nutrients into the cell by diffusion and packaging it into (clear circles spread throughout the cell) c. pseudopod- “false foot”; the motility results from the streaming of the protoplasm that forms the process 2. Entamoeba causes amoebiasis or amoebic dysentery‚
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Terms Definitions What activity are you simulating when you click the ERV button? What additional muscles are used? Maximal exhalation; internal intercostal and abdominal wall muscles What does the pump rate simulate? The number of beats per minute (BPM) stimulates respiratory rate How did changing the radius effect FEV (%)? FEV decreased in response to decrease in radius What effect does the addition of surfactant have on the airflow? AIrflow increases because resistance is reduced
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion‚ molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the largest pore size? You
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Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 20% by answering 1 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by Your answer : c. ligaments. Correct answer: b. tendons. 2. Skeletal muscles are composed of hundreds to thousands of individual cells called Your answer : b. myofibrils. Correct answer: c. fibers. 3. The term motor unit refers to Your answer : a. all of the motor neurons
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Exercise 6.1 a) Describe the mediastinum and its boundaries. The region betweenthe two pleural cavities‚ also contains the thymus‚ esophagus‚ andtrachea. b) Use the identify tool to label the sructures in the diagram belowc)Right common carotid arteryd)Brachiocephalic arterye)Right Brachiocephalic veinf)Ascending Aortag)Superior vena cavah)Interior of paricardial saci)Auricle of right atrium j)Right Atrium k)Diaphram l)Left common carotid artery m)Left subclavian arteryn)Left Brachiocephalic
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