CNS and PNS test Flashcards
What is the cauda equina?
Extended nerve that branches from the end of the spinal cord
How are spinal nerves grouped and numbered?
Grouped by their location along the spinal cord
What does the cervical plexus control?
Neck
What does the brachial plexus control?
Shoulders and upper arms
What does the lumbar plexus and the sacral plexus control?
The pelvic girdle and lower limb
What is a plexus?
Complex network of nerves
What does a gyrus look like?
Ridges
What does a sulcus look like?
Shallow groove
What does a fissure look like?
Deep groove
What is the function of the frontal lobe?
Controls movements of skeletal muscles, and performs higher intellectual processes
What is the function of the parietal lobe?
Has sensory areas that provide sensations of temperature, pain, touch, and pressure. Also has an association area function in understanding speech
What is the function of the temporal lobe?
Has sensory areas responsible for hearing, and association areas to interpret sensory experiences
What is the function of the occipital lobe?
Sensory areas responsible for vision
What is Broca’s area?
In the left cerebral hemisphere, it coordinates complex muscular actions of the mouth
What is Wernicke’s area?
General interpretation. Where the parietal, temporal, and occipital association areas join, plays the primary role in complex thought processing and helps arrange words