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52 Cards in this Set

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Medulla Oblongata
Location?
part of brainstem
Medulla Oblongata
function?
regulation of respiratory rhythm, controls rate and stregnth of heartbeat, blood vessle diameter.Coughing, sneezing, swallowing,vomiting.
What cranial nerves are contained in the Medulla Oblongata
Cranial Nerves 9,10, 11, 12
What is Cranial Nerve 1?
Function?
Olfractory controls smell
What is Cranial Nerve 2?
Function?
Optic nerve controls central and peripheral vision
What is Cranial Nerve 3?
Function?
Location?
Occulomotor nerve is located in the midbrain, controls eyemovement, elevation of upper eyelids and pupil constriction
What is Cranial Nerve 4?
Function?
Location?
Trochlear nerve is located in the midbrain. Controls down and inward eye movement
What is Cranial Nerve 5?
Function?
Location?
Trigeminal nerve is located in the Pons. Controls touch, pain, temperature, chewing, jaw and eye muscle, proprioception
What is Cranial Nerve 6?
Function?
Location?
Abducens nerve is located in Pons.
Controls abduction of the eyes
What is Cranial Nerve 7?
Function?
Location?
Facial Nerve is located in the pons. controls the muscles of facial expressions. closes eyelids. Controls secretions from glands in mouth and eyes
What is Cranial Nerve 8?
Location?
Function?
Acoustic nerve is located in the Pons. The vestibular branch controls equalibrium, the cochlear branch controls hearing
What is Cranial Nerve 9?
Location?
Function?
Glossopharyngeal nerve is located in the medulla oblongata, controls movement of pharyngeal muscles, secretion of parotid glands, pharyngeal and posterior tongue sensations
What is Cranial Nerve 10?
Location?
Function?
Vagus nerve is located in the medulla oblongata, controls pharyngeal and laryngeeal movement & sensation, visceral activities, taste
What is Cranial Nerve 11?
Location?
Function?
Spinal Acessory nerve is located in the Medulla oblongata.
Controls pharyngeal, sternocleomastoid & trapezius movement
What is Cranial Nerve 12?
Location?
Function?
Hypoglossal nerve is located in medulla oblongata.
Controls tongue movement
Corpus Callosum
Joins the 2 cerebral hemispheres
Cerebellum
Composed of grey and white matter, it controls equilibrium, posture, muscle tone & coordination
Lymbic System
Regulates some visceral activities, and some function in emotional personality
Normal ICP
less than 10
Falx Cerebelli
Separates left and right cerebellar hemispheres
Pons

Location?
Function?
Cranial nerves contained?
Located in brainstem
Contains projection tracts between spinal cord, medulla, and brain. Controls rate & legnth or respirations along with the medulla.Sensory input and motor output for face.
CN 5,6,7,8 are located
Midbrain (mesencephalon)

Location?
Function?
Cranial nerves contained?
Part of brainstem. Controls wakefulness through the RAS, motor coordination, & conjugate eye movements
CN 3,4 are located
Frontal lobe

Location?
Function?
Part of cerebral cortex.
Controls voluntary motor function and higher mental functions
Parietal Lobe

Location?
Function?
Part of cerebral cortex.
Responsible for sensory function, sensory association, higher level processing of general sensory modalities
Temporal lobe

Location?
Function?
part of cerebral cortex
controls auditory and speech centers
Occipital Lobe

Location?
Function?
Part of cerebral cortex
responsible for visual reception and visual association
Basal Ganglia

Function?
central motor movement
Thalmus (diencephalon)

Function?
relays sensory impulses to cortex. This is the lowest level of crude conscious awareness
Hypothalmus

Function?
Regulates ANS, stress response, sleep appetite, temp, emotions and water balance
What must ICP level be to have Intracranial Hypertension?
ICP greater than 20mmHg
Cerebral Spinal Fluid
*Clear colorless liquid that has few cells, some protein, glucose, and lg amts of sodium chloride
*Reabsorbed by arachnoid villi
*Norm circulating volume is 125-150 ml
*500-800 ml produced per day
Cerebellum
governs all sensory, motor, thought, learning,analizes, associates, intergrates, and stores info
Meninges
3 layers covering brain, spinal cord and spinal canal.
3 Meningial coverings and purposes.
starting @ brain
Pia
Arachnoid
Dura
mnemonic P A D. the meninges "pad the brain"
List 12 cranial nerves
1-olfactory
2-optic
3-occulomotor
4-trochlear
5-trigeminal
6-abducens
7-facial
8-acoustic
9-glossopharyngeal
10-vagus
11-spinal acessory
12-hypoglossal
mnemonic:
On Old Olympus's Towering Tops A Fin And German Viewed Some Hopps
Calc for Cerebral Perfusion Pressure
MAP-ICP=CPP
Minimal Acceptable CPP
60 mmHg
A Wave (ICP)
aka plateau waves occur with a sudden, sustained rise in ICP. 50-100 mmHg
Usually not present, last approx 5-20 min
They reflect Cerebral ischemia
B Wave (ICP)
Seen with ICP 20-40mmHg
Variable in shape and size
Last 0.5-2 min
C Wave (ICP)
occur every 4-8 min, they raise ICP up to 20mmHg, unknown significance
Arterial tears in brain
Epidural hematoma
Venous tears in brain
subdural heamtoma
Concussion
Strech injury to axon from blunt trauma
Unconsciousness less than 30 min and attention span / memory deficits
Diffuse Axonal Injury
sheering injury, the injury disconnects the Cerebral hemispheres from the reticular activating system.
Characterized by immediate coma lasting 6-24hours
Contusion
Focal head injury, bruising & edema of the cerebral cortex
Epidural hematoma
neurosurgical emergency usually associated with temporal or parietal skull fx with laceration of middle meningeal artery.
typically loss of consciousness thnanbreif lucid period (4-6hrs)followed by increasing restlessness, aggitation, & confusion progressing to coma
What deficits/signs and symptoms would you see in Epidural Hematoma
N&V during lucid period.
Ipsilateral occulomotor paralysis
Siezures
Contralateral hemiparesis, hemiplegia
+ babinski
Common progression of Epidural Hematoma
Uncal Herniation
Raccoon eyes
Ecchymosis around eyes resulting from bleeding into the paranasal sinuses. Indicative of basilar skull fx in the anterior fossa
Rhinorrhea
CSF draining from nose. Indicative of basilar skull fx in the anterior fossa
Otorrhea
CSF draining from ears is indicative of Middle Fossa basilar skull fx
Battle's Sign
An area of ecchymosis over the mastoid projection. Indicative of a temporal or basilar fx in the posterior fossa