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Functional Neuranatomy > Hypothalamus > Flashcards

Flashcards in Hypothalamus Deck (25):
1

major function of the hypothalamus

-coordinate autonomic, endocrine, and somatic motor activities to maintain homeostasis and fulfill bodily needs
-temperature regulation
-water balance
-food intake
-digestion
-metabolism
-sex

2

the ____ marks the anterior or chiasmatic region

-the optic chiasm

3

the ___ marks the middle or tuberal region

-infundibulum

4

the ___ marks the mammillary region

-mammillary body

5

Name the 3 regions that the hypothalamus can be divided into in the mediolateral dimension

-periventricular nucleus along the third ventricle
-medial zone
-lateral hypothalamic area

6

medial forebrain bundle

-relays information between the cortex, hypothalamus, and the brainstem
-contains the axons of the monoamine neurons innervating the forebrain
-supports the self-stimulation in animals

7

reticular formation: give the general function and the efferent

General function: arousal
Efferent: reciprocal

8

nucleus of the solitary tract: give the general function and the efferent

general function: visceral sensory
Efferent: recipricol

9

retina: give the general function and the efferent

general function: circadian rhythms
Efferent: NOT reciprical

10

olfactory bulb and cortex: give the general function and the efferent

gen. function: olfactory experience
efferent: NOT reciprical

11

amygdala/hippocampus: give the general function and the efferent

gen. function: emotions (limbic); memory
efferent: reciprical

12

cingulate cortex/septum: give the general function and the efferent

gen function: emotions (limbic)
efferent: reciprocal
gen function: memory
efferent: thalamus

13

prefrontal cortex: give the general function and the efferent

gen function: multimodal, processed sensory
efferent: reciprocal
gen function: visceral motor
efferent: preganglionic neurons in the brainstem and spinal cord

14

circulation, circumventricular organs (CVO)

general function: endocrine; regulatory
efferent: pituitary

15

what structure provides afferents from reticular formation to the hypothalamus?

-dorsal longitudinal fasciculus

16

what kinds of unprocessed, sensory information does the hypothalamus receive?

-retina to the suprachiasmatic nucleus
-olfactory bulb and cortex

17

what non-neuronal substances does the hypothalamus respond to?

-glucose
-hormones
-blood osmolarity
-temperature

18

exceptions to the hypothalamus reciprocity

-retinal and olfactory afferents
-thalamus
-preganglionic neurons in the brainstem and spinal cord
-pituitary gland

19

dorsal longitudinal fasciculus

-hypothalamus axons that directly project to the preganglionic sympathetic and parasympathetic neurons in the brainstem and spinal cord

20

why are specific functions of hypothalamic nuclei difficult to localize?

-small size
-close packing density
-complex patterns of afferent and efferent pathways
-many hypothalamic functions are carried out by extensive networks of mutually interconnected cells

21

name the function associated with the anterior nucleus of the chiasmatic region

-thermoregulation; sexual behavior

22

function of paraventricular region

projections to brainstem and spinal cord; projections to posterior pituitary

23

function of preoptic "nucleus"

-thermoregulation
-sexual behavior
-sleep regulation

24

function of suprachiasmatic "nucleus"

circadian rhythm regulation

25

supraoptic "nucleus" functions

-projections to posterior pituitary