Neuro Midterm
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61 Terms
What level of the brainstem is this taken from? and What is the highlighted structure?
Spinomedullary Junction & Spinothalamic Tract
What does the Spinothalamic Tract do?
Pain and Temperature
What level of the brainstem is this taken from? and What is the highlighted structure?
The Vestibulospinal Tract, Spinomedullary Junction
What is the function of the Vestibulospinal tract?
Unconscious control of muscle tone and reflex activity for posture and balance
What Three Tracts transport Unconscious, involuntary motor control from the brainstem
Rubrospinal tract
Vestibulospinal tract
Reticulospinal tract
(Fixed it Dicko calm down)
What is this structure & What is its function?
Ventral Spinocerebellar Tract (double-crossed, functionally ipsilateral, enters via superior peduncle)
Transmits Wholistic lower limb proprioception
What is this structure & what is its function?
Dorsal Spinocerebellar Tract (ipsilateral, enters via inferior peduncle)
Transmits lower limb proprioception For Individual Muscles
Identify this structure and its function
Spinal Trigeminal Nucleus
Pain and Temperature from the Skin of the head
Identify this structure and its function
Accessory Nucleus
Motor Neurons for Trapesius & SCM
What is the Function of the Pyramids?
Contain Motor Nuclei and Tracts
Identify this structure and its function
Hypoglossal Nucleus
Innervation of Tongue Muscles (Speech & Mastication)
Always Close to the Center
Identify this structure and its function
Nucleus Ambiguus (Accessory Nerve Nucleus)
Motor
Muscles of Pharynx for Speech and Swallowing
What is this structure?
Spinothalamic Tract, In more rostral Inferior Medulla (Sensory Decussation)
Identify this structure and its function
Lateral Cuneate Nucleus
Location of Cell Bodies for the Cuneocerebellar Tract (2nd Order)
Function of the Cuneocerebellar Tract?
Unconscious perception of Proprioception from Upper limb
What is the difference between the Cuneocerebellar Tract and the D&V Spinocerebellar Tract?
Cuneocerebellar = Upper Body Proprioception
Spinocerebellar = Lower Body Proprioception
Identify this structure and its function
Spinal Trigeminal Tract
Transporting P&T from the Face to spinal trigeminal nucleus via STT
Identify this structure and its function
Solitary Nucleus
Sensory Nuclei of CNVII - Anterior 2/3 of Tongue
Identify this structure and its function
Medial Longitudinal Fasciculus
Eye and Head movement (comms between ocular nuclei)
Identify this structure and its function
Median Vestibular Nucleus
Vestibular Information via ICP, forms 2nd order tract
Identify this structure & its function
Spinothalamic Tract —> P&T
Note how it has been pushed dorsally by the olives!
Identify Structure + Brainstem Level
Inferior Cerebellar Peduncle + Pontomedullary Junction
Identify this Structure - provide reasoning
Spinothalamic Tract
(is in same location as caudal spinothalamic, just appears different due to Middle cerebellar peduncle)
Identify this Structure - provide reasoning
Ventral Spinocerebellar Tract
Same location —> just superior to spinothalamic, Middle Pedouncle makes the difference bc zoomed out
Identify this Structure
Facial Nucleus
Innervates Muscles of Facial Expression & Stapedius of Inner Ear
Identify this structure & its function
Abducens Nucleus
Supplies Lateral Rectus
Identify this structure & its function
Pontocerebellar Tract -
Identify what this is?
Motor Root CNVII
Identify
Spinal Trigeminal Tract
Identify
Spinothalamic
Identify
Abducens Motor Tract?
What is the function of the pontine nuclei?
Part of the Corticopontine tract
Coordination of Movement
Identify
Trigeminal Nerve
Identify Structure and Function
Trigeminothalamic Tract
From principle nucleus, transports fine touch and vibration from the face.
Ascends with Medial lemniscus
Identify
Trigeminal Motor Nucleus
Identify
Corticospinal Tract
Identify??
Cerebral Peduncle
Identify? Function?
Median Longitudinal Fasiculus
Coordination of Eye movements among Nuclei
Identify
Corticopontine Tract
What is this?
Median Lemniscus
Identify (lock in this ones important)
Oculomotor Nucleus
How do you know this is the Trigeminothalamic Tract?
Because it is directly above the Median Lemniscus!
What is this structure, what level of the brainstem is this on?
Oculomotor Nerve + Superior Colliculus of Midbrain
Identify
Spinal Principle Nucleus
What is this Structure?
Dura Mater
Identify this tract - what is its function?
Spinothalamic Tract —> P&T
Surely we know what this is and what it does?
Ventral Horn —> Motor Neurons
What is this structure & its function?
Substantia Gelatinosa
Modulates Pain and Temperature for Nucleus Proprius & Marginal Zone
(1st order for Spinothalamic Tract)
What is this structure?
Marginal Zone (P&T)
Identify this tract - is it motor or sensory?
Motor
Lateral Corticospinal Tract
What is this structure?
Pia Mater
What level of the SC are we looking at?
Thoracic
Identify & What Spinal cord level is this?
VestibuloSpinal Tract
Cervical
What is this area & what is its function?
Dorsal Root
Transport incoming primary sensory neurons
What is this area & what is its function?
Lateral Motor Column
Motor for Limb Muscles (Lateral)
Lateral to Medial = Distal to proximal muscles to the trunk
Target of Reticulospinal tract
What is this area?
Dorsal Spinocerebellar Tract
What is the function of this area?
The Medial Motor Nucleus
Innervates Muscles of the Axial Skeleton
Identify
Ventral Root
What is this structure and what spinal level does it indicate?
Lateral Horn
Indicative of a thoracic or upper lumbar cross section
Upper Lumbar due to larger grey matter
What is the function of the lateral corticospinal tract?
Motor for limb muscles
Identify
Cauda Equina