Neuro Lab 5 Flashcards
What is the function of the thalamus?
Major relay station
What is the function of the pineal body?
- receive info about state of the light-dark cycle from the environment
- convey this info by production/secretion of melatonin
What is the function of the superior colliculus?
visual, auditory, and somatosensory information are integrated to initiate motor commands
What is the function of the inferior colliculus?
- sound localization
- frequency determination
- integration of auditory with nonauditory systems
What is the function of the facial colliculus?
houses the abducens nucleus (VI)
&
facial motor fibers (VII)
What is the function of the lateral geniculate nucleus?
plays an essential role in normal visual processing
What is the function of the medial geniculate nucleus?
Principal relay nucleus for auditory system between inferior colliculus and auditory cortex
What is the function of the cerebral peduncle?
Main highway for signals for transport from cortex to other parts of the CNS
- especially for body coordination
What is the function of the reticular formation?
arousal & alertness
What is the function of the medial lemniscus
transport sensory DCML information of
- conscious proprioception
- vibration
- fine touch
- 2-point discrimination of skin and joints on body and head
What is the function of the lateral lemniscus?
carries info about sound from: cochlear nucleus
to: various brainstem nuclei
and ultimately: contralateral inferior colliculus of the midbrain
What is the function of the hypothalamus?
regulates function of the body
balance
thermoregulation
Homeostasis
Endocrine
Autonomic
Limbic
What is the function of the amygdala?
negative emotions
fear
stress
anxiety
What is the function of the fornix?
white matter tract: hippocampus <-> hypothalamus
What is the function of the infundibular stalk?
- connects posterior pituitary <-> hypothalamus
- allows hormones synthesized in hypothalamus to –> posterior pituitary for release into the bloodstream
What is the function of the cingulate gyrus?
- coordinates sensory input with emotions
- emotional response to pain
- regulates aggressive behavior
- communication
- maternal bonding
- language expression
- decision making
What is the function of the septum pellucidum?
separates lateral ventricles
What is the function of the superior cerebellar peduncle?
carries efferents from globose, emboliform, and dentate nuclei TO red nucleus and thalamus for regulation of rubrospinal and corticospinal UMN systems
What is the function of the middle cerebellar peduncle?
- Conveys info from cerebrum & pons –> cerebellum
- Contains ONLY afferent fibers from pontine nucleus
- Pontocerebellar tract: important connection b/w cerebral cortex <-> cerebellum & modulates skilled activities of hands and fingers
What is the function of the inferior cerebellar peduncle?
coordination of movement and proprioception
What are the 4 Afferent and 1 Efferent tract going through the Inferior Cerebellar peduncle?
4 afferents
1. Posterior spinocerebellar
2. vestibulocerebellar
3. olivocerebellar
4. reticulocerebellar
1 efferent
1. Cerebellovestibular
What is the function of the fasciculus cuneatus?
Part of DCML
carries sensory info from UE
What is the function of the fasciculus gracilis?
part of DCML
carries sensory info from LE
What are the (6) parts of the limbic system
- amygdala
- hippocampus
- thalamus
- hypothalamus
- basal ganglia
- cingulate gyrus
Describe the path of the goal directed behavior loop.
- Head of caudate (evaluates input for decision making, planning, and picking actions)
- Globus Pallidus Internus
- Thalamus
- Lateral Prefrontal cortex
Describe the path of the social behavior loop.
- Head of caudate (aware of social cues, regulates self control, and determines relevant/irrelevant info)
- Substantia nigra
- Thalamus
- Ventral Prefrontal Cortex
Describe the path of the emotion loop.
- Ventral striatum (emotions and motivation & works as a link between emotional, cognitive, and motor systems)
- Ventral Pallidum
- Thalamus
- Medial prefrontal cortex
Describe the path of the oculomotor loop.
- Body of caudate (decides about motions of the eyes and spatial attention)
- Substantia nigra
- Thalamus
- Frontal and supplementary eye fields of the cortex
Describe the path of the motor loop.
- Putamen
- Globus Pallidus
- Substantia nigra
- Thalamus
- Motor & Prefrontal Cortex
Where is the thalamus?
Where is the pineal body?
Where is the superior colliculus?
Where is the inferior colliculus?
Where is the facial colliculus?
Where is the lateral geniculate nucleus?
Where is the medial geniculate nucleus?
Where is the cerebral peduncle?
Where is the reticular formation?
Where is the lateral lemniscus
Where is the hypothalamus?
Where is the hypothalamus?
Where is the amygdala?
Where is the amygdala?
Where is the fornix?
Where is the fornix?
Where is the fornix?
where is the medial geniculate nucleus?
where is the lateral geniculate nucleus?
where is the medial geniculate nucleus?
Where is the cingulate gyrus? (1)
Where is the cingulate gyrus? (2)
Where is the cingulate gyrus? (3)
Where is the septum pellucidum?
Where is the superior cerebellar peduncle?
Where is the middle cerebellar peduncle?
Where is the inferior cerebellar peduncle?
Where is the middle cerebellar peduncle?
Where is the decussation of superior cerebellar peduncle?
Where is the cerebral aqueduct?
Where is the commissure of the inferior colliculus?
Where is the nucleus of the inferior colliculus?
Where is the commissure of the superior colliculus?
Where is the substantia nigra?
Where is the cerebral peduncle?
Where is the lateral lemniscus?
Where is the medial lemniscus?
Where is the medial lemniscus?
Where is the rubrospinal tract?
Where is the spinothalamic tract?
Where is the rubrospinal tract?
Where is the middle cerebellar peduncle?
Where is the 4th ventricle?
Where is the rubrospinal tract in the pons?
Where is the lateral lemniscus?
Where is the medial lemniscus?
Where is the reticular formation?
