hypothalamus.txt

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Author:
wdrusinowii
ID:
117853
Filename:
hypothalamus.txt
Updated:
2011-11-19 07:55:15
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neuro
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neuro
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  1. the hypothalamus can activate what systems within the body
    the endocrine and somatic motor system along with behavioral systems.
  2. Which two nuclei of the hypothalamus mediate through the posterior pitutary and in general what do they secrete
    Magnocellular neurons of the supraoptic and paraventricular nuclei of the hypothalamus regulate water and electrolyte balance.
  3. Which two nuclei of the hypothalamus mediate through the posterior pitutary and speifically what do they secrete
    • Paraventricular Nuclei:
    • a. CRH (corticotropin releasing hormone)
    • b. TRH (thyrotropin releasing hormone)
  4. Hypertonicity >285 mOsm / kg, osmoreceptors will stimulate the release of ADH and initiate drinking behavior due to thirst is controlled from which hypothalamic nuclei
    Supraoptic nucleiand the paraventricular
  5. Osmoreceptors are located in the __________ hypothalamus.
    anterior
  6. Thirst and regulation of drinking in the _________ hypothalamus. (Tissue osmolality and vascular fluid volume control drinking behavior.)
    lateral
  7. Temperature regulation is under the control of the ________ and ________ hypothalamic nuclei.
    Temperature regulation is under the control of the anterior and posterior hypothalamic nuclei.
  8. Preoptic Area is associated with secretion of which hormones?
    The Preoptic Area secrets LHRH (Luteinizing hormone-releasing hormone, (GnRH} - secreting neurons in the medial parts of the preoptic area.
  9. One of the main jobs of the hypothalamus is to......
    The thalamus is a major site of integration of autonomic reflexes of the brainstem and spinal cord. This includes homeostasis and osmolarity, temperature and glucose
  10. How does the sympathetic nervous system integrate with the memory system?
    The hypothalamus is a major site of integration of autonomic reflexes of the brainstem and spinal cord with memory
  11. What funtion does oxytocin promote in the body?
    Oxytocin promotes smooth muscle contraction
  12. 6 hypothalamic factors (4 releasing, and 2 inhibiting factors), which control the release of hormones from the anterior pituitary. They are secreted where......and transported to the body via what route
    They are secreted into the median eminence of the hypothalamus, They are then picked up by the capillary loops of the hypophysial portal system
  13. Secretion of the preoptic nuclei will stimulate the release of what and what effect on the body?
    It will stimulate the release of GNRH which will increase bloodpressure as well as GNRH for male sexual performance
  14. Where in the Hypothalamus is GIH released from
    GIH (growth hormone inhibiting hormone, also called somatostatin, and SRIF - somatotropin release inhibiting factor 14 aa) - secreting neurons in the periventricular nuclei.
  15. Which area of the hypothalmus is referred to as the satiety center
    The ventromedial nuclei is referred to as the satiety center
  16. From where in the hypothalmus is GIH released and what is another name for GIH?
    GIH (growth hormone inhibiting hormone, also called somatostatin, is released from the Pariventricular nuclei.- somatotropin release inhibiting factor - secreting neurons in the periventricular nuclei.
  17. What is the largest nuclei of the medial area of the hypothalamus and what does it control
    The Anterolateral nucleus and it controls EATING
  18. What factors are released from the paraventricular nuclei and why is this nuclei unique?
    GIH and Dopamine or Prolactin Inhibiting factor. The unique thing about this nucleus is that it secretes only inhibiting factors.
  19. be able to draw this and what is secreted from each.
  20. A nice hypotalamus chart

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