SECONDARY LEVEL *READING \& WRITING / PAGBASA AT PAGSULAT* Name of Learner: Arvim \( T \). Vide 1 LRN: \( 132 \underline{5} \geq 81400 \geq 3 \) ALS Teacher: Marilyn T. Revamonte THE BRAIN Date: \[ 3 / 20 / 24 \] The brain is the center of the nervous system. It interprets stimuli and tells the body how to react. The brain has three major parts. The part that controls balance, coordination and muscle movement is called the cerebellum. It makes sure that the muscles work well together. For example, a gymnast is able to balance on a beam because of the cerebellum. The medulla is a Iong stem that connects the brain to the spinal cord. It tells one's body to do things without thinking about them. Digesting food or breathing even while asleep are examples of these involuntary actions. On the other hand, there are actions that one decides to do. It is the largest part of the brain -the cerebrumthat is responsible for these voluntary movements. Without it, one will not be able to kick a ball or dance at all. QUESTION: What will the brain likely tell you if you happen to hold on to something hot? KASAYSAYAN NG TACLOBAN kabisera ng lalawigan ng Leyte. Ang Leyte ay matatagpuan sa Rehiyon 8 ng Pilipinas
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The following case study includes three components (A, B, C). Please answer all components in your response. A general practitioner has been presented with an unusual case, and they believe that the cause/origins of the symptoms must be neurological. Still, they do not know how to explain the cause of all the symptoms. The general practitioner brings the case to you, an expert in neuroanatomy, to help localize the neurological source of the problem. Consider the following case study and use the clues provided to solve this neurological mystery. You are presented with an English-speaking patient who is alert and attentive. As you begin your assessment, you ask the patient a series of questions. As the patient responds, you notice that although they are speaking a lot, you quickly find their speech incomprehensible. As you ask more questions, you find that they have difficulty speaking words and forming complete sentences. Interestingly, they seem to otherwise behave normally (i.e., no other symptoms of dysfunction). Based on the symptoms and your understanding of functional anatomy: Identify two structures in the brain that could be related to the observed speech impairments (2) and the function of each structure (4). Identify where these structures are located in the brain (hemisphere and lobe) (2). Do you think both structures have been affected, or only one (1)? Provide an explanation (2).
Josee P.
BIO Stimulating the Brain. Communication in the nervous system is based on the propagation of electrical signals called action potentials along axons, which are extensions of nerve cells (see the MCAT-style Passage Problems in Chapter 26 ). Action potentials are generated when the electric potential difference across the membrane of the nerve cell changes: Specifically, the inside of the cell becomes more positive. Researchers in clinical medicine and neurobiology cannot stimulate nerves (even noninvasively) at specific locations in conscious human subjects. Using electrodes to apply current to the skin is painful and requires large currents, which could be dangerous. Anthony Barker and colleagues at the University of Sheffield in England developed a technique called transcranial magnetic stimulation (TMS). In this widely used procedure, a coil positioned near the skull produces a time-varying magnetic field that induces in the conductive tissue of the brain (see part (a) of the figure) electric currents that are sufficient to cause action potentials in nerve cells. For example, if the coil is placed near the motor cortex (the region of the brain that controls voluntary movement), scientists can monitor muscle contraction and assess the connections between the brain and the muscles. Part (b) of the figure is a graph of the typical dependence on time $t$ of the magnetic field $B$ produced by the coil. In part (a) of the figure, a current pulse increases to a peak and then decreases to zero in the direction shown in the stimulating coil. What will be the direction of the induced current (dashed line) in the brain tissue? (a) $1 ;$ (b) $2 ;$ (c) 1 while the current increases in the stimulating coil, 2 while the current decreases; (d) 2 while the current increases in the stimulating coil, 1 while the current decreases.
Today, you are a first responder, on scene at a 2 car, head on accident on Rt. 95. When you get on scene, you notice a young-adult male anxiously pacing the lane in front of the accident. You approach slowly, and ask if he was involved in the crash. He points to the grey car and says that he was driving when the other car swerved in front of him, hit the jersey barrier and spun to crash head-on into his car. He explains that he then unbuckled, forced his way out of the car, and began pacing while someone called 911. Immediately, you attempt to get him to sit on the stretcher to be examined as you see several injuries. Give a brief "medical report" to the doctor as your arrive at the hospital. A successful response will include: information from the entire semester and proper anatomical terminology. A target effector, such as the heart, receives input from the sympathetic and parasympathetic systems. What is the actual difference between the sympathetic and parasympathetic divisions at the level of those connections (i.e., at the synapse)? What role does the autonomic nervous system play in the car crash? think about the context of a lioness hunting on the savannah, why would the sympathetic system not activate the digestive system?
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