L2 - Hypothalamus

Question 1

Hypothalamus Function

Answer 1

exert control on ANS & endocrine system, maintaining homeostasis

Question 2

Systems controlling emotion and motivated behaviour

Answer 2

hypothalamus and limbic system

Question 3

Allostasis

Answer 3

adaption to optimal set points

Question 4

Homeostasis

Answer 4

maintainence of stable environment

Question 5

Clinical symptoms from disruptions in hypothalamus

Answer 5

fever, addiction, anxiety, obesity

Question 6

Hypothalamus location

Answer 6

anteriorly - optic chiasm & anterior commissure

posteriorly - mamillary bodies

Question 7

Hypothalamus composition

Answer 7

collection of nuclei, ventral specialised glial outgrowth

Question 8

Infundibulum

Answer 8

specialised glial outgrowth

Question 9

Physical homeostasis

Answer 9

mediated by neurons in particular nuclei that act via neurotransmitters and neurohormones

Question 10

disadvantage of interlinked circuits in hypothalamus

Answer 10

dysfunctional circuit - downstream consequences

Question 11

Products released from paraventicular nucleus

Answer 11

oxytocin & vasopresisn

Question 12

Function of neurons linked to median eminence

Answer 12

secrete regulatory hormones into local capillary system - hormones act locally on pituitary

Question 13

Control of pituitary horomes

Answer 13

hypothalamus

Question 14

Tanycytes

Answer 14

specialised cells in lining of 3rd ventricle

Question 15

Tanycyte function

Answer 15

gatekeepers - provide direct link with circulating systems/peripheral body

Question 16

fenestrated capillary function

Answer 16

communication with circulating blood to hypothalamus

Question 17

Importance of functional interferes

Answer 17

allow communication between systems

Question 18

Mechanisms of controlling homeostasis in hypothalamus

Answer 18

receives info from body, biological set point comparison, adjusts outputs