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Spinal Chord

PromptResponse
Grey matter consists of I am consisted mostly of neuronal cell bodies, dendrites and synapses
White matter consists of I am consisted of bundles of myelinated axons
______________ fibers enter the dorsal spinal cord through the dorsal roots. Motor neurons project to skeletal muscle fibers through the ventral roots Primary sensory afferents enter the spinal cord through the _______ _______. Motor neurons project to skeletal muscle fibers through the ________ _______.
Primary sensory neurons have their cell bodies in this location ____________ neurons have their cell bodies in the dorsal root ganglion.
What is a ganglion I am an organized cluster of neuronal cell bodies in the peripheral neuvous system.
What is a nucleus I am an organized cluster of neuronal cell bodies in the central nervous system
How may pairs of spinal nerves are there running down the length of the spinal chord? 31 pairs
What is a dermatome? Region of the body surface innervated by a pair of spinal nerves
What is the difference between a fiber tract and nerve? The prior is refers to a bundle of axons in the central neurvous system whereas the other refers to a bundle of axons in the peripheral nervous system.
What are central pattern generators? Give examples. I am a circuit in the spinal chord responsible for rhythmic movements like walking, scratching and swimming motions in fish
The spinal chord mediates these two reflexes. This part of the nervous system mediates stretch and withdrawal reflexes.
In the sensory-motor hierarchy, the spinal chord is responsible for ____________ and ____________. In the sensory-motor hierarchy, I am responsible for protective reflexes and locomotion.
In the sensory-motor hierarchy, the brainstem is responsible for ____________, ___________, _____________and _______________________. In the sensory-motor hierarchy, the brainstem is responsible for respiration, chewing, facial expressions and stereotyped behaviours
In the sensory-motor hierarchy, the motor cortex is responsible for ______________________ and ________________. In the sensory-motor hierarchy, I am responsible for complex voluntary movements and fine motor control
The spinal chord comprises central _______ matter surrounded by _______ matter. The ___________ comprises central gray matter surrounded by white matter.
The dorsal columns and the anteriolateral columns of the spinal chord are organized in this manner. These two columns of the spinal chord are organized somatotopically, with the lower body is medial and the upper body is more lateral.
How many segents do each of the following spinal sections have? Cervical, thoracic, lumbar, sacral and coccygeal? The spinal chord comprises 31 segments, 8 of which are in the first section, 12 in the second, 5 in the third, 5 in the fourth and one in the last. Name these sections.
What are the cervical and lumbar enlargements? These two sections of the spinal chords have enlargements as a result of the increased density of nerves that innervate the limbs.
Where do the spinal nerves leave the spinal chord and project downward through the lumbar cistern to become the cauda equina? Around the first lumbar vertebra, the spinal nerves leave the spinal chord and project downwards through the _________, forming the _________.
The spinal chord enters the skull through the ______________ to form the medulla. The spinal chord enters the skull through the foramen magnum to form the ___________.
Afferents for fine touch make synapses in the _______________________________ whereas afferents for pain and temperature make synapses in the ___________________________. Afferents for ______________make synapses in the dorsal column nuclei in the brainstem whereas afferents for ________________________________ make synapses in the dorsal horn of the spinal chord grey matter.
Look at slide 43 Look at slide 43
Created by: April2000
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