Brain Flashcards
What is the directional term used in place of “anterior” in the brain?
Rostral
What is the directional term used in place of “posterior” in the brain?
Caudal
What are the 3 meninges of the brain?
- Dura mater
- Arachnoid mater
- Pia mater
Name the 4 ventricles of the brain
- Right lateral ventricle
- Left lateral ventricle
- Third ventricle
- Fourth ventricle
What creates cerebrospinal fluid in the ventricles?
Choroid plexus
What are the 3 functions of cerebrospinal fluid?
- Buoyancy
- Protection
- Chemical stability
Name the 6 steps in the flow of cerebrospinal fluid
- Choroid plexus of both lateral ventricles produce CSF
- CSF flows through the interventricular foramina
- Into the third ventricle
- Through the mesencephalic aqueduct
- Into the fourth ventrilce
- And into the subarachnoid space between the arachnoid and pia mater
Describe hydrocephaly
Swelling of the head caused by overproduction or blockage of CSF
Describe meningitis
Swelling of the brain caused by bacterial infections of the meninges
What is the purpose of the extensive folds of the brain?
To increase surface area of the brain
Name the 4 cranial lobes
- Frontal
- Parietal
- Occipital
- Temporal
What is the function of the frontal lobe?
Higher thought
What does the precentral gyrus function as?
Primary motor cortex. Controls voluntary movements of specific body parts
What does Broca’s Area control?
The formation of speech
What is the function of the parietal lobe?
Integrates sensory information
What does the postcentral gyrus function as?
Primary somatic cortex; receives sensory information
What does Wernicke’s Area control?
Understanding of written and spoken word
What is the function of the occipital lobe?
Allows for visual accuity
What is the function of the temporal lobe?
Allows for auditory, olfactory (smell), and gustatory (taste) interpretation
What does the left cerebral hemisphere control?
Language and reasoning
What does the right cerebral hemisphere control?
Artistic awareness, imagination, and music comprehension
What connects the left and right hemispheres?
Corpus callosum