Interbrain Flashcards
The interbrain is situated between _____ and ________
Cerebrum
and
Brainstem
What two structures does the interbrain it connect?
Cortex
and
Brainstem
What kind of white fiber tracts and gray nuclei does the interbrain contain?
The interbrain contains ascending and descending white fiber tracts and gray matter nuclei
What do the ascending and descending white fiber tracts and gray matter nuclei regulate?
They regulate
- internal homeostasis
- memory processing
- emotional response
The interbrain connects the _______ system and the ________ system
Endocrine system
and
Nervous system
The interbrain relays ______ information between _______
Sensory information
Brain regions
The interbrain controls many what?
Controls many peripheral nervous system functions
Motor function control for instance
Parts of interbrain are
- Epithalamus
- Thalamus
- Subthalamus
- Metathalamus
- Hypothalamus
what is the most dorsal part of diencephalon?
Epithalamus
What part does the epithalamus form?
It forms the roof of third ventricle
The epithalamus has an unpaired___ what?
Pineal gland (glandula pinealis, epiphysis)
what does the pineal gland do?
It is an endocrine gland which produces melatonin
where is the pineal gland partially?
in CSF
Epithalamus has a —-?
It has a habenula. Habenula has a white matter stalk. The habenula anchors pineal gland to thalamus. The habenula is involved pain processing, reproductive behavior, sleep-wake cycle, stress response)
Thalamus is between ______ and ______
Cerebral cortex
and
midbrain
What part does the thalamus form?
Part of lateral wall of the third ventricle
The thalamus is a gateway to _____
Gateway to cerebral cortex. Every sensory system (except olfactory) has a thalamic nucleus that receives signals and sends them to associated cortical area
What does the thalamus regulate?
Sleep-wake cycle and consciousness
Left and right side of thalamus make contact at midline forming band…
Adhesio interthalmica
What is the subthalamus? What two things is it composed of ? What does it pass through and what structure does it head towards?
Complex region of nuclear groups and fiber tracts passing through brain stem and heading towards thalamus
Metathalamus lies under cover of _____
Thalamus
What does the metathalamus consist of?
Two oval shaped geniculate bodies
Corpus geniculatum mediales (part of auditory pathway)
Corpus geniculatum laterale (part of optic tract)
Hypothalamus is on what surface?
Ventral surface
Hypothalamus is the link between _____ and _______ ________
Hypothalamus is also the functional link between _______ and _______ systems
Emotions
and
Physical reactions
Nervous and endocrine systems
Which part is the main visceral control centre?
the hypothalamus
Hypothalamus secretes what?
Produces _______ and _______, releases them by?
Neurohormones like GH, FSH, ACTH
Antidiuretic hormone and oxytosin, releases them by neurohypophysis
Hypothalamus is important to:
Homeostasis: heart rate, blood pressure
Parts of hypothalamus are:
- Mamillary body (round white elevation)
- Optic tract and chiasm (crossing fibers)
- Grey tuber (= tuber cinereum)
- Hypophysis, pituitary gland
