Neu 2 - Hypothalamus Flashcards
which are the layers of the cerebrum?
Neocortex, Limbic system and Prefrontal cortex.
What function develops the limbic system?
Emotional Behavior, Motivational Drives, and the 5 F’s Feeding, Fleeing, Fighting, Feeling and Sex.
What function develops the prefrontal cortex?
This area is involved in organizing and planning the intellectual and emotional aspects of behavior and inhibit the limbic system.
What is the most important link between Nervous System and Endocrine System?
Hypothalamus
Where are the inputs on the hypothalamus?
In the areas not protected by Blood-Brain Barrier, OVLT (Organum vasculosum of the lamina terminalis; senses change in osmolarity), Area postrema (Responds to emetics).
What does the Hypothalamus do?
[TAN HATS] Thirst and water balance, Adenohypophysis control, Neurohypophysis release hormones produced in the hypothalamus, Hunger, Autonomic regulation, Temperature regulation, Sexual urges.
which nucleus produces ADH?
Supraoptic nucleus primarily makes ADH.
Which nucleus makes Oxytocin?
Paraventricular nucleus primarily makes oxytocin.
which area involves hunger and its destruction develops anorexia?
Lateral area and also is inhibited by leptin.
what function develops ventromedial area?
Satiety. Destruction produces hyperphagia, and also it stimulated by leptin
Where is thermal regulation control?
Anterior hypothalamus, A/C= Anterior.
what function develops posterior hypothalamus?
Heating, sympathetic.
which nucleus control the circadian rhythm?
Suprachiasmatic nucleus and aslo receives input form retina to determine day or night. “You need sleep to be charismatic (Chiasmatic)”.
what disease is characterized by hemorrhagic lesion in the mammillary body?
Wernickes’s encephalopathy.
what is the embryologic origin of the posterior pituitary (Neurohypophysis)?
Neuroectoderm, also receive input from supraoptic (ADH) and Paraventricular (oxytocin).
which hormone is secreted on the orgasm, dilation of the cervix in labor and breastfeeding?
Oxytocin.
Secreted by pineal gland when prolonged periods of darkness.
Melatonin.
Inhibits the anterior pituitary’s production of LH and FSH then suppresses libido in winter
Melatonin.
which nucleus of the hypothalamus is considered the “Master clock” for most our circadian rhythms?
Suprachiasmatic nucleus.
which nucleus of the hypothalamus regulates the parasympathetic nervous system?
Anterior hypothalamus and Preoptic nucleus.
which nucleus of the hypothalamus its destruction results in hyperthermia?
Anterior nucleus.
which nucleus of the hypothalamus regulates the sympathetic nervous system?
Posterior and Lateral Nucleus.
which nucleus of the hypothalamus produces antidiuretic hormone (ADH) to regulate water balance?
Supraoptic nucleus.
which nucleus of the hypothalamus receives input from the retina?
Suprachiasmatic nucleus.
