Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

15 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
The 5 segmental nerves from the sacral part of the spinal cord. The 1st four emerge through the anterior sacral foramina and the 5th from between the sacral foramen and the coccyx
Sacral Nerves
not plexus
A network of motor and sensory nerves formed from 4th and 5th lumbar and by the 1st-3rd sacral nerves. They converge toward the lower part of the greater sciatic foramen and unite to become a large flattened band most of which continues into the thigh as sciatic nerve
Sacral plexus
A network of nerves formed by the ventral anterior primary divisions of the 1st 3rd and the greater part of the 4th lumbar nerves L1-L4
Lumbar plexus
Five pairs of spinal nerves rising in the lumbar region of the vertebral column
Lumbar nerves
12 pairs of spinal nerves emerging from the spinal cord at the level of the thorax including 11 intercostal nerves and one subcostal nerve; nonplexus; 1st 2 intercostal innervate upper limb and thorax next four supply thorax only; lower 5 supply walls of thorax and abdomen; Each subcostal innervates abdominal wall and skin of a buttock
Thoracic Nerves
The network of nerves formed by the ventral primary division of the first 4 cervical nerves C1-C4
Cervical plexus
superior to thoracic plexus
Eight pairs of spinal nerves that arise from the cervical segments of the spinal cord, from above atlas to below 7th vertebra. 1st 4 supply head and neck last 4 innervate upper limbs, scalp & back
Cervical nerves
superior to thoracic nerves
A network of nerves that originate in the 5th-8th cervical and 1st & 2nd thoracic spinal nerves. It innervates the muscles and skin of chest shoulders and arms
Brachial Plexus
The area of the skin that provides sensory input to one pair of spinal nerves or to cranial nerve V
Dorsal roots are strictly
sensor or motor
The anterior rami of spinal nerves, except for T2-T12, for networks of nerves called
These plexus nerves supply the anterolateral abdominal wall, external genitals, and part of the lower limbs
Lumbar plexus
lower back
These muscles supply the skin and muscles of the head, neck and upper part of shoulders; they connect with some cranial nerves and innervate the diaphram
Cervical Plexus
complicated neck
_______ ______typically are connected with the spinal cord by a posterior root and an anterior root.
Spinal Nerves
all the nerves
All spinal nerves contain both;
Sensory and motor axons