Brain and Cranial Nerves Flashcards
Which part of the CNS has the most neurons?
The cerebellum has the most neurons in the CNS.
The _______________ fissure separates the left brain from the right brain.
longitudinal
The gyri are the __________________ grooves seen in the brain.
folds
What are the layers of the meninges and name a defining characteristic of each?
The Dura Mater is the outer most covering of the meninges. It acquired its name because of how “tough” the tissue is and its resilience to foreign particles from entering the brain.
The Arachnoid Mater ist he middle layer of the meninges. I acquired its name simply because of its spider web-like pattern of fibers. The Pia Mater is the deepest layer and adheres directly to the brain.
The brain has hollowed out cavities responsible for producing __________________.
cerebral spinal fluid. These hollowed out cavities are called ventricles.
What is the responsibility of the medulla oblongata?
The MO is responsible for life sustaining functions such as respiration rate, heart rate, vasomotor responses, and coughing, sneezing gagging, etc.
The pons is considered the pathway in and our of the brain. What other functions is the pons responsible for?
The pons is also responsible for sleep patterns, hearing, balance, taste, eye movements, facial expression, facial sensation, respiration, swallowing, bladder control, and posture.
The cerebellum contains about 50% of the neurons in the brain. What is its function?
The cerebellum is responsible for controlling and coordinating motor activities.
What is the temporal lobe responsible for?
The temporal lobe is responsible for hearing, smell, learning, memory, and emotional behavior.
What lobe of the brain is responsible for visual acuity?
The occipital lobe is responsible for visual acuity.
Which lobe of the brain do we coordinate cognitive thoughts and fine motor functions?
The frontal lobe is considered the “higher brain function” area. It is in this lobe that we can generate and coordinate cognitive thoughts and plan for complex movements.
What part of the brain is responsible for organizing sensory and cognitive information into a memory?
The hippocampus organizes sensory and cognitive information for future use. The cerebellum organizes motor skills for future recall.
Sensory signals that travel through the spinal cord and enter the brain do so through which part of the parietal lobe?
Sensory information that enters the parietal lobe does so through the postcentral gyrus. Motor information that leaves the parietal lobe to travel back to the spinal cord does so through the pre-central gyrus.
