performance increased through exercise. However‚ this was not clear in the observations because as soon as exercise began‚ the blood with the oxygen immediately went to parts of the body that was doing the work (here‚ the legs). At the initial stage of excercise‚ the subjects actually felt more distracted because of the lack of oxygen in their brain. Also the body had to warm up and get used to running. Once oxygen reached these certain sites‚ the heart continued to pump blood to the rest of the body (including
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Optic nerve sheath diameter (ONSD) The anatomy of the optic nerve sheath : The intraorbital section of the optic nerve extends from the globe‚ where it inserts medially‚ to the optic canal located in the lesser wing of the sphenoid bone. It is encased by a meningeal sheath consisting of dura mater‚ arachnoid mater and pia mater. Cerebrospinal fluid is contained in the trabeculated subarachnoid space and is continuously and slowly filtered. As a result the optic nerve sheath is in direct
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Neurophysiology Lab Report Activity 1: 1. What was your observed threshold voltage? The voltage at which I first observed an action potential was 3.0V 2. How does this tracing compare to the one that was generated at threshold voltage? The small increase in voltage causes a small increase in the height of the action potential peak. 3. What reasons can you give for your answer? Recruitment of the nerve’s neurons. Increasing the voltage will cause most of the neural fibers to experience
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Image as the number-1 fast-food company by sales‚ with more than 32‚478 restaurants in 117 countries. 3: Consistently solid financial performance. * Sales revenue up 3.8% in 2009‚ global comparable sales up 6.9%. * Net income up 9% from 2008. Weakness: 1: 80% of restaurants are franchise owned‚ placing image and reputation in other’s hands. 2: Not in sync with health and lifestyle 3: Struggles with fluctuations in operating and net profits: * Operating profits $4‚433M (2006)‚ $3
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Module 06 Case Study: Articulations and Nerve Tissue Part I— “Jill” Questions 1. What is the difference between a tendon and ligament? (1 point) --The difference between a tendon and a ligament is that a tendon attaches to muscle. (ie. muscle-bone‚ muscle-muscle‚ muscle- skin) A ligament‚ however‚ attaches to cartilage. (ie. cartilage-bone‚ cartilage-cartilage‚ bone-bone) 2. What bones form the articulation (joint) of the ankle? Did Jill most likely sprain or strain her ankle? Explain your
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Force‚ Motion‚ Newton’s Laws‚ Momentum‚ and Impulse What is force? Force is a push or pull upon an object resulting from the object’s interaction with another object. There are two types of force‚ contact forces‚ and forces resulting from action-at-a-distance. A contact force can be frictional forces‚ normal forces‚ applied forces‚ and air resistant forces. The formula for contact force is F = ma. This type of force occurs when two objects are contacting each other physically. If you kick a ball
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Gray matter 2) The filum terminale is a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral column b) An indentation on the dorsal side of the spinal cored c) The tapered end of the spinal cord d) An extension of the pia mater that anchors the spinal cord to the coccyx e) Where the cell bodies of sensory neurons are located 3) The cauda equina is a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral
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Neurophysiology of Nerve Impulses ACTIVITY 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. If the extracellular K+ increases then the concentration of intracellular K+ will decrease causing a decrease in the steepness of the concentration gradient and fewer K+ ions would be drawn out. 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative
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Maya Angelou was born on April 4‚ 1928‚ in St. Louis‚ Missouri‚ and she was a writer and civil rights activist known for her 1969 memoir‚ I Know Why the Caged Bird. For Maya‚ her poem made literary history as the first nonfiction best-seller by an African-American woman. The poignant work also made Angelou an international star.In 1971‚ Angelou published the Pulitzer Prize-nominated poetry collection Just Give Me a Cool Drink of Water Fore I Die. She later wrote the poem "On the Pulse of Morning"—one
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Recent advances in technology permit measurement of characteristics of the nerve fibres that make up the optic nerve. One of these is SD-OCT(Fig2)‚ a non contact‚ non-invasive method that enables physicians to obtain in vivo‚ high resolution (upto 5 microns) cross-sectional images of the retina. It is based on principle of low-coherence interferometry(Fig 3). By imaging a 3D cube of data it allows a detailed evaluation of the peripapillary area. Fig 2 : Cirrus HD OCT machine In low-coherence interferometry
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