HomeCoursesMEDSCI 201: Human Structure and FunctionLecture 18 Lecture 18 0% Question 1 of 31 What are the histological arrangements of CNS neurons called? (3)= Cortex, nuclei, reticular What are the histological arrangements of CNS neurons called? (3)= Cortex, nuclei, reticular Question 1 of 31Question 2 of 31 How can you identify neurons in a Nissl stain?= Rough endoplasmic reticulum makes up the nissl body, with a pale nucleus and a dark nucleolus How can you identify neurons in a Nissl stain?= Rough endoplasmic reticulum makes up the nissl body, with a pale nucleus and a dark nucleolus Question 2 of 31Question 3 of 31 How can you distinguish glia from neurons?= Darker, smaller, numerous How can you distinguish glia from neurons?= Darker, smaller, numerous Question 3 of 31Question 4 of 31 What do you call groups of neural cells in the CNS?= Tracts What do you call groups of neural cells in the CNS?= Tracts Question 4 of 31Question 5 of 31 What do you call bundles of axons in the PNS?= Nerves What do you call bundles of axons in the PNS?= Nerves Question 5 of 31Question 6 of 31 What facilitates myelination in the CNS?= Oligodendrocytes What facilitates myelination in the CNS?= Oligodendrocytes Question 6 of 31Question 7 of 31 What facilitates myelination in the PNS?= Schwann cells What facilitates myelination in the PNS?= Schwann cells Question 7 of 31Question 8 of 31 When do perineuronal nets begin to form?= When the brain loses plasticity When do perineuronal nets begin to form?= When the brain loses plasticity Question 8 of 31Question 9 of 31 What is the origin of neurons?= Neural epithelium What is the origin of neurons?= Neural epithelium Question 9 of 31Question 10 of 31 What is the origin of schwann cells? = Neural crest What is the origin of schwann cells? = Neural crest Question 10 of 31Question 11 of 31 What is the origin of satellite cells?= Neural crest What is the origin of satellite cells?= Neural crest Question 11 of 31Question 12 of 31 What is the function of astrocytes?= Maintanence and repair of neurons What is the function of astrocytes?= Maintanence and repair of neurons Question 12 of 31Question 13 of 31 What is the function of oligodendrocytes?= Myelinate neurons What is the function of oligodendrocytes?= Myelinate neurons Question 13 of 31Question 14 of 31 What is the shape of astrocytes?= Stellate What is the shape of astrocytes?= Stellate Question 14 of 31Question 15 of 31 What is the difference between the somatic and autonomic nervous systems?= Somatic is under voluntary control, autonomic is under involuntary control What is the difference between the somatic and autonomic nervous systems?= Somatic is under voluntary control, autonomic is under involuntary control Question 15 of 31Question 16 of 31 How are neurons classified? (4)= Unipolar, multipolar, bipolar, pseudounipolar How are neurons classified? (4)= Unipolar, multipolar, bipolar, pseudounipolar Question 16 of 31Question 17 of 31 What are the morphological differences between axons and dendrites?= Dendrites thin as they branch, covered in synaptic terminals, blunt ends. Axons retain constant diameter, orignate at the axon hillock, end with dilation of axon forming boutons What are the morphological differences between axons and dendrites?= Dendrites thin as they branch, covered in synaptic terminals, blunt ends. Axons retain constant diameter, orignate at the axon hillock, end with dilation of axon forming boutons Question 17 of 31Question 18 of 31 What is the dorsal horn of the spinal cord usually associated with?= Sensory information What is the dorsal horn of the spinal cord usually associated with?= Sensory information Question 18 of 31Question 19 of 31 What is the ventral horn of the spinal cord usually associated with?= Motor information What is the ventral horn of the spinal cord usually associated with?= Motor information Question 19 of 31Question 20 of 31 What nuclei are closer to the outside of the spinal cord horns?= Somatic sensory and somatic motor What nuclei are closer to the outside of the spinal cord horns?= Somatic sensory and somatic motor Question 20 of 31Question 21 of 31 What nuclei are closer to the outside of the spinal cord horns?= Somatic sensory and somatic motor What nuclei are closer to the outside of the spinal cord horns?= Somatic sensory and somatic motor Question 21 of 31Question 22 of 31 Which nuclei are more central in the spinal cord horns?= Visceral sensory/motor Which nuclei are more central in the spinal cord horns?= Visceral sensory/motor Question 22 of 31Question 23 of 31 What do the dorsal root ganglia contain?= Cell bodies of sensory neurons What do the dorsal root ganglia contain?= Cell bodies of sensory neurons Question 23 of 31Question 24 of 31 What information does the cuneate fascicles carry? (3)= upper limb proprioception, fine touch and vibration What information does the cuneate fascicles carry? (3)= upper limb proprioception, fine touch and vibration Question 24 of 31Question 25 of 31 Where do the gracile and cuneate fasciculi synapse?= In the gracile and cuneate nuclei of the medulla Where do the gracile and cuneate fasciculi synapse?= In the gracile and cuneate nuclei of the medulla Question 25 of 31Question 26 of 31 What information does the spinothalamic tract carry?= Pain, temp, coarse touch What information does the spinothalamic tract carry?= Pain, temp, coarse touch Question 26 of 31Question 27 of 31 What information do the ventral and dorsal spinocerebellar tracts carry?= Proprioception What information do the ventral and dorsal spinocerebellar tracts carry?= Proprioception Question 27 of 31Question 28 of 31 Which tracts carry motor information from the brain to the spinal cord?= Lateral and anterior corticospinal tracts Which tracts carry motor information from the brain to the spinal cord?= Lateral and anterior corticospinal tracts Question 28 of 31Question 29 of 31 Why do superior levels of the spinal cord have larger density of white matter compared to inferior levels?= Superior levels contain axons for both superior and lumbar nerves, whereas inferior levels only contain lower nerve innervation Why do superior levels of the spinal cord have larger density of white matter compared to inferior levels?= Superior levels contain axons for both superior and lumbar nerves, whereas inferior levels only contain lower nerve innervation Question 29 of 31Question 30 of 31 Which corpuscle resides in connective tissue?= Pacinian corpuscle Which corpuscle resides in connective tissue?= Pacinian corpuscle Question 30 of 31Question 31 of 31 Which corpuscle is in the dermal papillae?= Tactile or meissner's Which corpuscle is in the dermal papillae?= Tactile or meissner's Question 31 of 31 Loading...
