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AP I Exam 4
Chapter 14
Question | Answer |
---|---|
spinal nerves that divide into several branches after passing through the intervertebral foramen are called what? | rami |
Muscles and skin that are part of the posterior trunk of the body is classified as what? --- sensory | posterior ramus |
Where does the anterior ramus extend its spinal nerves to? | ~muscles and structures of the upper and lower limbs ~skin of the lateral and anterior trunk --- major parts of the body |
What type of branch reenter the cerebral canal through the intervertebral foramen and supplies to the vertebrae, spinal cord, and meninges? | meningeal branch |
When the body want to send spinal nerves from the anterior rami to body structures, what network of axon is used? | plexus |
What are plexus? | ~when the anterior rami want to send spinal nerves to the structure of the body, a formation of networks on both left and right sides of the body join with various number of axons from anterior rami adjacent nerves ~network/cluster of neurons |
What happens if you damage a plexus? | ~may cause damage to spill segment, but the nerve could go back with the help of Schwann cells ~not as strong but still have control |
intercostal nerves | directly innervate the structures they supply |
What will be effected by intercostal nerves | intercostal muscles between ribs, muscles and skin of the thorax and abdominal wall |
Reflexes are what? | fast, involuntary, autonomic sequences of actions that occur in response to a particular stimulus |
What is the process a reflex makes? | receptor-sensory neuron-posterior root&ganglion-interneurons of gray matter CNS-anterior horn-anterior root-motor neuron- effector |
Contraction of skeletal muscle is what kind of reflex? | somatic reflex |
What places are effected if a automatic reflex is hit? | smooth muscle or cardiac muscle and glands |