The Brain and Cranial Nerves Chapter 14 Notes 14.1 Brain Organization‚ Protection‚ and Blood Supply * brain: a portion of the CNS made of neurons and neuroglia * control center for registering sensations and correlating them together and with stored information to make decisions and take action * center for intellect‚ emotions‚ behavior and memory * neural tube: brain and spinal cord develop from the ectodermal tube * anterior part expands * inner
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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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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? No 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? The threshold voltage is at 3.0 V. 3. How does this tracing compare to the one that was generated at the threshold voltage? There was a slight increase. 4. What reason can you
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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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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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is activated by the rise in blood temperature and is responsible for for controlling the mechanisms that will decrease the blood temperature. Efferent nerve impulses are sent from the hypothalamus to multiple different corrective mechanisms to try to decrease the blood temperature and maintain it at approximately 37℃. The efferent nerve impulses causes the smooth muscles to relax and as a result‚ opens up blood capillaries near the surface of the skin. This is known as vasodilation as the blood
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Exercise 19: Gross Anatomy of the Brain and Cranial Nerves HUMAN BRAIN- RIGHT LATERAL VIEW -(A - E) A = POSTCENTRAL GYRUS B = PARIETAL LOBE C = PARIETO-OCCIPITAL SULCUS D = OCCIPITAL LOBE E = CEREBELLUM HUMAN BRAIN- RIGHT LATERAL VIEW -(F - L) F = PRECENTRAL GYRUS G = CENTRAL SULCUS H = FRONTAL LOBE I = LATERAL SULCUS J = TEMPORAL LOBE K = PONS L = MEDULLA IN WHICH OF THE CEREBRAL LOBES ARE THE FOLLOWING FUNCTIONAL AREAS FOUND? AUDITORY CORTEX TEMPORAL LOBE IN
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Abstract: The purpose of this experiment was to examine how the compound action potentials propagate down the sciatic nerve of a frog based on varying stimuli. Before the nerve could be tested it needed to be extracted from the thigh of the frog and then submerged in saline. Several varying stimuli were used and recorded by a software package. The second experiment requires a constant stimulus with varying reference pin locations. From this the velocity of the action potential propagated can be
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https://www.facebook.com/Medicalstudycenter2012 Heart + Nerve & Muscle Important Solved SEQs By Medical Study Center Ref: Guyton Q.1. a). What is saltatory conduction? Enlist its advantages? 1+1 marks b). briefly mention the three determinants of resting membrane potential. 3 marks Ans: Q.1.a. SATTATORY CONDUCTION: 1 mark Propagation of action potential along a myelinated nerve fiber from one node of Ranvier to other in jumping manner is called as saltatory conduction. r Node to node conduction
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Peripheral Nerve and Spinal Cord Problems Test Bank MULTIPLE CHOICE 1. The nurse assessing a 54-year-old female patient with newly diagnosed trigeminal neuralgia will ask the patient about a. visual problems caused by ptosis. b. triggers leading to facial discomfort. c. poor appetite caused by loss of taste. d. weakness on the affected side of the face. ANS: B The major clinical manifestation of trigeminal neuralgia is severe facial pain that is triggered by cutaneous stimulation of the nerve. Ptosis
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