Lab 2 Practical (rebby)

Question 1

1?

Answer 1

(Posterior Limb) Internal Capsule

Note: Posterior Limb is where CST (UE, Trunk, LE progressively more posterior)

Question 2

2?

Answer 2

Substantia Nigra

Function: produces dopamine, affects mood, learning, judgement, and decision making

Question 3

3?

Answer 3

Cerebral Peduncles

Function: assist in refining motor movements, learning new motor skills, converting proprioceptive info into balance and posture maintenance

Question 4

1?

Answer 4

Uncus

Function: “Uncle MOE” = Memory, Olfaction, Emotions

Question 5

2?

Answer 5

Parahippocampal Gyrus

Function: Spatial memory and Awareness, navigation

Question 6

3?
What is
What do

Answer 6

Fusiform Gyrus

Function: Facial Recognition, Object recognition

Question 7

1?
What is
What do

Answer 7

Fornix

Function: cognition and episodic memory recall; white matter

Question 8

2?

Answer 8

Amygdala

Function: Mediate emotional learning and behavior

Question 9

3?
What is
What do

Answer 9

Hippocampus

Function: memory, learning, emotion; hold short term memories and transfer them to long-term storage

Question 10

4?

Answer 10

Fusiform Gyrus

facial object recognition

Question 11

5?

Answer 11

Parahippocampal Gyrus

Question 12

6?

Answer 12

Uncus

Question 13

What is this?

Answer 13

Middle Cerebellar Peduncle

Question 14

What is this?

Answer 14

Inferior Cerebellar Peduncle

Question 15

What is this?

Answer 15

Superior Cerebellar Peduncle

Question 16

What is the probe most likely pointing to? Which loops enters the BG through here?

Answer 16

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)

Question 17

What is the most medial part of the lentiform nucleus that the probe is pointing to? What loops exit through here?

Answer 17

Globus Pallidus Internus

Goal-Directed Behavior Loop & Motor Loop

Question 18

What gray matter structure is the probe pointing to?

Answer 18

Caudate Nucleus

Question 19

What white matter structure is the probe pointing to?

Answer 19

Fornix

Question 20

What specifically is the probe pointing to? What type of fibers travel here?

Answer 20

Anterior Limb of the Internal Capsule

(sensory) Projection Fibers

Question 21

What specifically is the probe pointing to? What type of fibers travel here?

Answer 21

Posterior Limb of the Internal Capsule

projection fibers & has somatotopic map: CST (UE, trunk, LE progressively more posterior)

Question 22

What part of the striatum is the probe pointing to? What loops enter the BG through here?

Answer 22

Head of Caudate

Goal Directed Behavior Loop & Social Behavior Loop

Question 23

What is the “middle of the 3 structures that make up the lentiform nucleus” that the probe is pointing to?

Answer 23

Globus Pallidus Externus

Question 24

Name the teal area (the one all the way at the top of the image) + the fibers near the medial area.

Answer 24

Inferior colliculus
Commissure of inferior colliculus

Image of: Midbrain

Question 25

name the area circled in pink. what is it's function?

Answer 25

Periaqueductal gray matter Function: pain, SNS response, defensive/aversive behavior

Question 26

name the orange area. what does it connect?

Answer 26

Cerebral Aqueduct (Aqueduct of Sylvius) Connects: 3rd and 4th ventricle

Question 27

Name the yellow area. what fibers run here (mostly)?

Answer 27

Decussation of superior cerebellar peduncle Mostly efferent fibers

Question 28

name the RED area

Answer 28

Rubrospinal tract Function: helps maintain motor tone

Question 29

name the green area

Answer 29

Substantia nigra

Question 30

what would a lesion to light green lead to?

Answer 30

if you say any of the following, u good: Parkinson's Disease Huntington's Disease shakiness tremors difficulty initiating movement balance coordination etc.

Question 31

name the blue area

Answer 31

Corticospinal or corticobulbar tracts (pyramidal tracts)

Question 32

name the purple area

Answer 32

Middle cerebellar peduncle in lower midbrain

Question 33

name the brown area

Answer 33

pineal body

Question 34

name the red area + the fibers near the medial area

Answer 34

Superior Colliculus Commissure of Superior Colliculus

Question 35

name the pink area

Answer 35

Periaqueductal gray matter

Question 36

name the orange area

Answer 36

Cerebral Aqueduct

Question 37

name the olive green area

Answer 37

Anterior and Lateral Spinothalamic Tracts

Question 38

name the dark blue area. what types of sensation travel here?

Answer 38

medial lemniscus DCML pathway so proprioception, light touch

Question 39

name the purple area

Answer 39

Red Nucleus

Question 40

name the light green area

Answer 40

substantia nigra

Question 41

name 2 basal ganglia loops that pass through the LIGHT GREEN area as an OUTPUT nucleus

Answer 41

Social Behavior Loop Oculomotor Loop

Question 42

name the light blue area

Answer 42

Pyramidal Tract corticospinal and corticobulbar tracts

Question 43

name the brainstem syndrome that affects this section of the brainstem

Answer 43

Anteromedial Midbrain Syndrome (weber's)

Question 44

What structures are affected if there is a brainstem blockage of PCA or basilar artery?

Answer 44

Corticospinal Tract (light blue) Oculomotor nerve nucleus (this is medial and just below the pink area) Red Nucleus (purple)