Can You Apply What You've Learned? 21. Describe the structure, function, and specific location of satellite cells. 22. Describe the structure and function of microglia. 23. Give the location where each of the neuron types listed is found. a. anterior horn cell b. Purkinje cell c. pyramidal cell 24. Compare and contrast the structure, location, and function of neurolemmocytes and oligodendrocytes. 25. Is it more common for brain tumors to arise from neurons or from glial cells? 26. Using knowledge of electrochemical gradients, describe the mechanism that explains why the resting membrane potential changes as the concentration of potassium in the ECF increases. 27. Describe whether sodium or potassium has a greater effect on resting membrane potential. 28. Describe how conduction velocity is impacted when temperature decreases. In your explanation, refer to the effect of temperature on membrane transport mechanisms. 29. Explain the role of $Na^+$ and $K^+$ in action potential generation.
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To summarize what you have learned, identify the parts of a neuron or a brain that correspond to the given functions below. The parts are found inside the grid and loop these words either horizontally, vertically, diagonally or inversely.
Sri K.
22. Describe the different parts of a motor neuron and their function: cell body, axon, dendrite, and axon terminal. 23. In nerve cells, how are action potentials usually mediated? What convert electrical signals to chemical signals at nerve terminals? What in target cells convert chemical signals back into electrical signals? 24. Name the membrane-enclosed compartments in a eukaryotic cell and their main functions. 25. How are proteins imported into organelles? 26. Understand the signal sequences that direct proteins to the correct compartment. Use ER proteins as examples. 27. How does a soluble protein cross the ER membrane? How does a transmembrane protein anchor itself in the lipid bilayer? 28. Explain the unfolded protein response (UPR). 29. Describe the pathway of exocytosis for secretory proteins. 30. Describe the process of receptor-mediated endocytosis.
Adi S.
19. Which of the following is not a lobe of the cerebrum? A. parietal B. frontal C. occipital D. sphenoidal E. temporal 20. The gray matter on the outer surface of the cerebrum is called the A. cortex. B. pia mater. C. reticular formation D. arbor vitae. E. cerebral medulla. 21. Which of the following is a somatic sense? A. smell B. taste C. touch D. sound E. sight 22. Which of the following statements concerning the descending pathways of the spinal cord is true? A. Most descending pathways control sensory functions. B. Many of the descending pathways decussate in the midbrain. C. Descending pathways consist of upper and lower motor neurons. D. Descending pathways must synapse in the thalamus. E. These pathways start in the spinal cord and end in the brain. 23. A nurse is caring for a patient who exhibits the following symptoms: 1) normal intelligence, 2) inability to maintain balance while walking, 3) decreased tone in the skeletal muscles, and 4) can initiate voluntary movements although they are somewhat uncoordinated. The patient is probably suffering from a condition that affected the A. midbrain. B. cerebellum. C. basal ganglia. D. cerebral cortex. E. brainstem.
Madhur L.
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