Hypothalamus 0.0 / 5 ? BiologynoNational 5ICAAE Created by: Annabel ForsdykeCreated on: 19-04-15 11:31 What does the lateral preoptic area do Involved in non-rem sleep onset 1 of 19 Other functions of the preoptic area thermoregulation, thirst, sexual behavior 2 of 19 Paraventricular Nuclei water balance and stress 3 of 19 supraoptic nuclei water balance 4 of 19 suprachiasmatic nuclei biological clock, circadian rhythms 5 of 19 Ventromedial Nuclei satiety centre, destruction results in overeating 6 of 19 Arcuate nuclei inhibits prolactin release by dopaergic neurons, produces hypothalamic releasing factors 7 of 19 Homeostatic functions of the hypothalamus Hormones, plasma osmolality, body temperature, body weight, nutrients 8 of 19 circadian regulatory functions approx 24 sleep wake cycle, seasonal breeding, hormonal regulation 9 of 19 Allostatic challenges fight or flight, mating, birth, suckling 10 of 19 Where does exteroceptive information to the hypothalamus come from? Visual - retina. Olfactory system. 11 of 19 Where does interoceptive information to the hypothalamus come from? viscera, body temperature, steroid hormones, osmolarity, glucose level, cytokines 12 of 19 Where lacks the blood brain barrier? The circumventricular organs - the median eminence, the posterior pituitary, the pineal gland and the OVLT 13 of 19 Example of something that can enter through the circumventricular organs cytokines - such as interleukin 1beta 14 of 19 Three types of output from the hypothalamus Neuroendocrine, autonomic, behavioural 15 of 19 Where is vasopressin formed, what is it's function Singalled by the supraoptic nuclei. Antidiuretic. 16 of 19 What happens if you get a lesion in the lateral hypothalamic area? loss of appetite, starvation 17 of 19 What happens if you lesion the ventromedial nucleus RAGE - emotional behavior 18 of 19 Melatonin is sent from which gland to the suprachiasmatic nucleus the pineal 19 of 19
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