Hypothalamus

Question 1

Two general classes of hypothalamic function

Answer 1

homeostasis and allostasis

Question 2

5 specific functions of the hypothalamus

Answer 2

Limbic
autonomic
neuroendocrine
Body temperature
Energy metabolism/food intake

Question 3

Neuroendocrine

Answer 3

hormone release from the pituitary regulated by hypothalamus

Question 4

Body temperature

Answer 4

Transmitted by spinohypothalamic tract

• Anterior Nuclei of hypothalamus- hot sensitive- initiate cooling
• posterior nuclei of hypothalamus- cold sensitive- initiate heating

Question 5

Preoptic nucleus

Answer 5

Compares input to internal set point temp

Question 6

Energy metabolism/food intake

Answer 6

Medial hypothalamus and lateral hypothalamus interaction through adrenergic receptors- hunger

Environmental and psychological factors- appetite

Gratification of hunger- satiety- mediated by chemical signals

Question 7

Anoreixa

Answer 7

Lateral hypothalamic lesions
Advanced degenerative brain dz
systemic medical illness
Psychiatric disorders

Question 8

Hyperphagia

Answer 8

---increased appetite----
Medial hypothalamic lesions
bilateral temporal lobe injury-- Kluver-Bucy
Psychiatric disorders
Prader-Willi Syndrome

Question 9

Prader-Willi syndrome

Answer 9

Parental genes missing on chrome 15

- disrupts normal functions of hypothalamus

Question 10

Causes of feeding disorders

Answer 10

Genetics
Behavior
Environment