What are the fates of the saccule, stride and endolymphatic duct in the adult organism? Where is the internal limiting membrane of the spinal cord located?
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Ectodermal Derivatives of the 10 mm Pig Embryo
QUESTIONS:
- What are the fates of the saccule, stride and endolymphatic duct in the adult organism?
- Where is the internal limiting membrane of the spinal cord located?
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- Part A - Identification of Spinal Cord Structures All information related to somatosensation (nociception, thermosensation, pruriception (itch), mechanosensation, and proprioception) is processed and directed to the brain in the dorsal spinal cord. The motor neurons of the ventral horns control the voluntary skeletal muscles. Study the structures of the spinal cord and then match the structure with its correct location. 00 1 5 6 7 8 9 10 2 11 3 12 4 View Available Hint(s)Intro to Neuroscience Question: Which of the following statements ACCURATELY describe spinal cord organization. α-motor neurons are organized from lateral to media such that those found towards the medial section of the spinal cord controls the distal muscles. Lumbar spinal cord enlargement is observed where neurons that innervate the legs and feet are located Neuronal cell bodies (somas) of neurons that innervate single muscles are only found in a single spinal cord segment. Muscles of the trunk are represented medially while muscles of arms and hands are represented laterally Group of answer choices 1, 2, 4 2, 3, 4 2, 4 4 only 1,2,3,4why does the action potential proceed in both directions away from the point of local current entry into theadjacent cell?
- Is the cnidaria derived from the cnidoblas yes or no?Describe the organization of the nervous system. Distinguish between the functions of neurons and neuroglia. Describe the cell body of a neuron. Distinguish among the functions of sensory neurons, interneurons, and motor neurons. Summarize the functions of each of the types of neuroglia (the exam will not ask about satellite cells) and describe how the myelin sheath is formed around a peripheral nervous system neuron. Explain why nerve impulse propagation is compromised in patients with multiple sclerosis. Distinguish between the composition of white matter and gray matter. Summarize neuron communication from the moment of receptor stimulation to the response of an effector, such as a muscle fiber, and define neurotransmitter, resting membrane potential, and current. Define electrochemical gradients and the term “polarized”, and describe the electrochemical basis of the resting membrane potential including the function of the sodium-potassium pump in maintaining the resting membrane…Are all neurons functional at birth in the human neonate, and what is needed to make them functional if they are not?
- Cranial Nerves 11. Using the following terms, correctly identify all structures indicated by leader lines on the diagram. abducens nerve (VI) longitudinal fissure pituitary gland accessory nerve (XI) mammillary body pons cerebellum medulla oblongata spinal cord cerebral peduncle oculomotor nerve (II) temporal lobe of cerebral hemisphere facial nerve (VII) olfactory bulb trigeminal nerve (V) frontal lobe of cerebral hemisphere optic chiasma trochlear nerve (IV) glossopharyngeal nerve (IX) optic nerve (II) vagus nerve (X) hypoglossal nerve (XI) optic tract vestibulocochlear nerve (VII)Many patiemts with progressive multiple sclerosis develop lesions in cervical spinal cordin addition to those in the brain. Lista ll cell types found in spinal cord and describe their normal function. In the case of last stage multiple sclerosis with a large lesion is the anterior column of the cervical spinal cord, what effect would you anticipate on each of these cell types? and further what signs and symptoms would you anticipate the patient to display?How does a vertebrate spinal cord differ morphologically from nerve cords of invertebrates?
- Explain why the spinal cord is larger at C3-T1 and T9-T12.Can failure to fuse the elevated neural folds cause neural tube defects?A. Why small children (generally before and around the stage of toddlers) tend to fall, while later on they will develop improved mobility. Briefly explain this limited mobility in their early years in terms of the formation and maturation of the different components of the nervous system structures. B. How does a typical skeletal muscle and a typical neuron behave differently when they get depolarized? If you block the achetalcholine receptors on the plasma membrane of these two types of cells, what would be the effect on the response of each of these two cell types? why.