Lab 2 Flashcards
how does the brain receive blood
via the internal carotid arteries and the vertebral arteries which join together to form the Circle of Willis
why is the circle of Willis critical for brain blood flow
introduces redundancies, backup plans/many routes
find the basal artery, posterior communicating artery and the anterior communicating artery
what kind of cells is the blood-brain barrier made of
endothelial
damage to the temporal lobe can cause…
difficulties with memory, hearing, emotional control and language
in the temporal lobe, what area affects understanding spoken language
Wernicke’s area
label the lobes, central sulcus, and the lateral fissure
identify the sulci, gyri and fissures of the brain. also any other missing labels
why does the brain have folds? describe the difference between the structure of a sulci and a gyri and a fissure
describe where the central sulcus us in relation to the precentral gyrus. what is the role of the precentral gyrus.
describe where the central sulcus is in relation to the postcentral gyrus. what is the role of the postcentral sulcus.
identify the sections of the brainstem
midbrain, pons, medulla oblongata (superior to inferior)
what produces cerebral spinal fluid
choroid plexus that’s in the ventricles
how does the cerebral spinal fluid go back to the circulatory system?
through arachnoid granulations
what is the path of cerebral spinal fluid
lateral ventricles > interventricular foramina > third ventricle > cerebral aqueduct > fourth ventricle > subarachnoid space > absorbed into bloodstream
These are the many paths
how can cerebral hemorrhage progress to an ischemic stroke? what is cerebral atrophy? how can an ischemic stroke lead to cerebral atrophy?
what’s deepest pia mater or dura mater
pia mater
what’s the function of the infundibulum?
The infundibulum connects the hypothalamus to the pituitary gland, serving as a pathway for hormones and regulating endocrine functions.
what does the olfactory bulb resemble in the brain?
antennas
white matter is myelinated or no
white matter is myelinated
what is a latency period in electromyography graph
interval between the initiation of AP in a motor unit and the onset of contraction in the muscle fibers
what are the 3 phases of muscle twitch contraction
how is nerve velocity measured in electromyogram
