Lab 2 Practical (rebby) Flashcards
1?
(Posterior Limb) Internal Capsule
Note: Posterior Limb is where CST (UE, Trunk, LE progressively more posterior)
2?
Substantia Nigra
Function: produces dopamine, affects mood, learning, judgement, and decision making
3?
Cerebral Peduncles
Function: assist in refining motor movements, learning new motor skills, converting proprioceptive info into balance and posture maintenance
1?
Uncus
Function: “Uncle MOE” = Memory, Olfaction, Emotions
2?
Parahippocampal Gyrus
Function: Spatial memory and Awareness, navigation
3?
What is
What do
Fusiform Gyrus
Function: Facial Recognition, Object recognition
1?
What is
What do
Fornix
Function: cognition and episodic memory recall; white matter
2?
Amygdala
Function: Mediate emotional learning and behavior
3?
What is
What do
Hippocampus
Function: memory, learning, emotion; hold short term memories and transfer them to long-term storage
4?
Fusiform Gyrus
facial object recognition
5?
Parahippocampal Gyrus
6?
Uncus
What is this?
Middle Cerebellar Peduncle
What is this?
Inferior Cerebellar Peduncle
What is this?
Superior Cerebellar Peduncle
What is the probe most likely pointing to? Which loops enters the BG through here?
Putamen (let’s say its pointing to the most lateral portion)
Motor Loop and Emotional Loop (emotional loop goes thru the ventral striatum which is caudate + putamen)
What is the most medial part of the lentiform nucleus that the probe is pointing to? What loops exit through here?
Globus Pallidus Internus
Goal-Directed Behavior Loop & Motor Loop
What gray matter structure is the probe pointing to?
Caudate Nucleus
What white matter structure is the probe pointing to?
Fornix
What specifically is the probe pointing to? What type of fibers travel here?
Anterior Limb of the Internal Capsule
(sensory) Projection Fibers
What specifically is the probe pointing to? What type of fibers travel here?
Posterior Limb of the Internal Capsule
projection fibers & has somatotopic map: CST (UE, trunk, LE progressively more posterior)
What part of the striatum is the probe pointing to? What loops enter the BG through here?
Head of Caudate
Goal Directed Behavior Loop & Social Behavior Loop
What is the “middle of the 3 structures that make up the lentiform nucleus” that the probe is pointing to?
Globus Pallidus Externus
Name the teal area (the one all the way at the top of the image) + the fibers near the medial area.
Inferior colliculus
Commissure of inferior colliculus
Image of: Midbrain
name the area circled in pink. what is it’s function?
Periaqueductal gray matter
Function: pain, SNS response, defensive/aversive behavior
name the orange area. what does it connect?
Cerebral Aqueduct (Aqueduct of Sylvius)
Connects: 3rd and 4th ventricle
Name the yellow area. what fibers run here (mostly)?
Decussation of superior cerebellar peduncle
Mostly efferent fibers
name the RED area
Rubrospinal tract
Function: helps maintain motor tone
name the green area
Substantia nigra
what would a lesion to light green lead to?
if you say any of the following, u good:
Parkinson’s Disease
Huntington’s Disease
shakiness
tremors
difficulty initiating movement
balance coordination
etc.
name the blue area
Corticospinal or corticobulbar tracts (pyramidal tracts)
name the purple area
Middle cerebellar peduncle in lower midbrain
name the brown area
pineal body
name the red area + the fibers near the medial area
Superior Colliculus
Commissure of Superior Colliculus
name the pink area
Periaqueductal gray matter
name the orange area
Cerebral Aqueduct
name the olive green area
Anterior and Lateral Spinothalamic Tracts
name the dark blue area. what types of sensation travel here?
medial lemniscus
DCML pathway so proprioception, light touch
name the purple area
Red Nucleus
name the light green area
substantia nigra
name 2 basal ganglia loops that pass through the LIGHT GREEN area as an OUTPUT nucleus
Social Behavior Loop
Oculomotor Loop
name the light blue area
Pyramidal Tract
corticospinal and corticobulbar tracts
name the brainstem syndrome that affects this section of the brainstem
Anteromedial Midbrain Syndrome (weber’s)
What structures are affected if there is a brainstem blockage of PCA or basilar artery?
Corticospinal Tract (light blue)
Oculomotor nerve nucleus (this is medial and just below the pink area)
Red Nucleus (purple)
