Brain Stem Structure Flashcards
integrative funcitons are performed by diffuse nucleus w/in the brainstem called
the reticular formation
help regulate consciousness and constains respiratory CV centers
reticular formation
Brainstem serves as a ______ for ascending sensory and descending motor tracts
conduit
Controls voluntary movement of limbs
Corticospinal tract
damage to anterior part of brainstem results in a :
motor deficeit
transmists sensory info for pain and temp
spinothalamic (lies more lateral)
transmists sensory info for touch, vibration, pressure and proprioception
Posterior Colunm/Medial Lemnisucs (lies medially and flares out)
Cell bodies of neurons are clustered _______ throughout brainstem and serve as origin of motor or termination of sensory CNs
nuclei
NS developed from
neural tube
Nueural tube has a ______ for motor and a ______ for sensory
basal plate
alar plate
basal plate and alar plate are seperated by
sulcus limitans
brainstem devo is simular to
sp cd devo
Alar will start to fan out more ______ while basal stays more ________
laterally
medially
CN nuclie are arranged in
Functional Columns
CNs in the midbrain
Optic Opthalmic Oculomotor Trochlear I-IV
CNs in the Pons
Trigeminal Abducens Facial Vestibulocochlear V-VIII
CNs in the Medulla
Glossopharnygeal Vagus Accesory Hypoglossal IX-XII
CN nuclei are Clusters of Cell Bodies ______ the brainstem
and nuclie are
WITHIN
bilateral
Somatic motor (red) is located
Most medial
Branchial motor (orange function)
Innervates skeletal mslc derived from brachial arches; muscles of mastication, facial expression, pharynx, larynx
Somatic motor (red) funx
innervates skeletal mals in head and neck that are derived from myotomes
What Brainstem nuclei are located in the Somatic Motor column
Oculomotor (III)
Troclear (IV)
Abducens (VI)
Hypoglossal (XII)
Brachial motor are located
second from middle: orange
What brainstem nuclei are located in the brachial motor column (orange)
Motor nucleus of V (V)
Facial nucleus (VII)
Nucleus ambiguus (IX and X)
Spinal Accessory nucleus in sp cd (XI)
Visceral motor (yellow) location
most lateral
Visceral motor (yellow) funx
Preganglionic parasympathetic innervation to cardiac m., smooth m., and glands
Visceral motor (yellow) brainstem nuclei
Edinger-Wesphal (III)
Salivatory (VII)
Inferior Salivatory (IX)
Dorsal motor of nuclues X (X)
Visceral Sensory (green) is located
most medial for sensory
Functions of Visceral sensory:
Special-taste
General- control of cardiorespiratory and digestive functions
Visceral Sensory involve in taste has what nuclei
Rostral nucleus solitarius (VII, IX, X)
Visceral sensory involved in control of cardiorepsiratory and digestive functions has what nuclei
Caudal nucleus solitarious (IX and X)
Somatic sensory located
more laterally then visceral sensory
Functions of somatic sensory
convey touch, pain, temp, position, vibration from skin, muslces and joints
Somatic sensory has what brainstem nuclei
Trigeminal nuclei (V, VII, IX, and X)
Special sensory (purple) located
most laterally of all
Special sensory column fnx
Hearing and balance
Special sensory for hearing and Balance has what brainstem nuclei
cochlear nucleus VIII
Vestibular nucleus VIII
The PCA and superior cerebellar artery supplies:
lateral aspects of midbrain including corticospinal tract
Occulsion of PCA causes
Weber syndrome
Blood supply to lateral aspects of midbrain including corticospinal tract
PCA and superior cerebellar artery
The basilar artery and posterior communicating artery supplies;
the medial aspect of the mibrain
supplies the medial aspect of the mibrain
Basilar artery and PCA
The ______artery supplies the medial aspect of midbrain
Basilar
The superior cerebellar artery supplies the
lateral aspect of pons (including middle and superior cerebellar peduncles)
Occulsion of superior cerebellar artery causes
Lateral pontine syndrome
Penetrating branches of ______ supply medial pons including pontine nuclei, medial lemniscuse and cotricospinal tract
Basilar Artery
Occlusion of Basilar artery:
medial pontine syndromes
What supplies the pontine tegmentum and dorsolateral quadrant of the pons
AICA (long circumferential branches off basilar)
Superior Cerebellar Artery
Occulsion of the AICA results in
lateral pontine syndrome
What supplies the lateral aspect of the rostal medulla
Vertebral artery and PICA
Occlusion of vertebral artery and PICA result in
Lateral medullary syndrom of Wallenburg
what supplies medial aspect of rostral medulla including corticospinal tract
the Vertebral Artery (anterior spinal a. and penetrating branches)
Occulsion of Vertebral artery at the anterior spinal artery and penetrating branches results in
medial medullary syndrome
what supplies the lateral aspect of caudal medulla
Posterior spinal artery
What supplies the medial apsects of the caudal medulla including corticospinal tract (medullary pyramid)
Anterior spinal artery
