Midbrain Flashcards
1
Q
Superior Colliculi
location
A
Rostral Tectum
2
Q
Superior Colliculi
function
A
- Visual relay station (visual tracking and head turning as a behavioral response to environmental stimuli)
- Contains afferent fibers from retina, efferent fibers to cervical spine
3
Q
Inferior Colliculi
location
A
Caudal Tectum
4
Q
Inferior Colliculi
function
A
- Auditory relay station
- Primary roles: signal integration, frequency recognition, and pitch discrimination.
- Contains afferent fibers from cochlea, superior olivary, trapezoid nuclei via lateral lemniscus and efferent fibers to thalamus
5
Q
Substantia Nigra
location
A
Tegmentum
6
Q
Substantia Nigra
function
A
- Part of the basal ganglia, involved in movement
- Major dopamine-producing and storage areas
7
Q
Ventral Tegmental Area
location
A
Rostral Tegmentum
8
Q
Ventral Tegmental Area
function
A
- One of the largest collections of dopamine-producing neurons in the brain
- Plays role in reward system (reinforcing behavior), with projections to limbic system
9
Q
Red Nuclei
location
A
Rostral Tegmentum
10
Q
Red Nuclei
function
A
- Motor coordination, motor control for flexor muscle groups
11
Q
Superior Cerebellar Peduncle
location
A
Caudal Tegmentum
also: Rostral Pons
12
Q
Superior Cerebellar Peduncle
function
A
- Relay station to cerebellum containing afferent and efferent fibers
13
Q
Raphe Nuclei
location
A
Caudal Tegmentum
also: Rostral Pons
14
Q
Raphe Nuclei
function
A
- Major serotonin-producing neurons in the brain
15
Q
Crus Cerebri
location
A
Basis Pedunculi
