Hypothalamus and the Limbic Sytem
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Together the hypothalamus and limbic system control what ?
endocrine system the autonomic nervous system to maintain homeostasis.
Hypothalamus and Limbic System what non - physical traits does these systems control ?
Emotion and Motivated Behavior
Hypothalamus and Limbic System name the for symptoms usually caused by these systems ?
What are the 5 functions of the Hypothalamus ?
- Blood Pressure
What is the two cell types in the paraventricular nucleus ?
–Parvocellular -hypothalamic releasing hormones, such as CRH.
–Magnocellular - oxytocin and vasopressin
What pathways deliver visceral information to the hypothalamus ?
- CN: VII - Facial
- CN:IX - glossopharyngeal
- CN:X - Vagus
What pathways control autonomic responses?
-hypothalamus, the parabrachial nucleus, the nucleus of the solitary tract, and neurons in the ventrolateral medulla.
-Indirect control of autonomic responses originates from the cortex, amygdala , and the periqueductal gray matter.
Neural Input and Hormonal Output: oxytocin release and lactation explain ?
magnocellular > secrete oxytocin > baby sucks mechanoreceptors > activate magnocellular hypothalamic neurons> releasing oxytocin > Oxytocin increases> myoepithelial > milk ejection.
Servo-control system does what ?
- Receives sensory information from external body–
- Compares sensory information with biological set points.–
- Adjusts an array of autonomic, endocrine and behavioral responses aimed at maintaining homeostasis
What portion of the hypothalamus controls heat ?
Which portion of the hypothalamus controls heat conservation ?
What will lesions of the ventromedial hypothalamus produce ?
hyperphagia and obesity.
Lesions of the lateral hypothalamus produce ?
Aphagia, leading to starvation. Stimulation produced the opposite effect of these lesions.
Does the hypothalamus have both a “feeding center” and a “satiety center”. T or F ?
Dopaminergic neurons > projecting from the substantia nigra >striatum > tegmental area to innervate parts of the limbic system. Dopaminergic neurons are thought to be important for reward processing and arousal, and therefore may affect feeding behavior...
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