THALAMUS and HYPOTHALAMUS ------------------------------------------------- February 14‚ 2011 DIENCEPHALON Gross Features * No structure visible on the surface of the brain except the inferior surface. * Inferior surface is the only area exposed to the surface in the intact brain. Extends from: * Anterior: Interventricular foramina * Posterior: Cerebral aqueduct Boundaries: * Superior: * Lateral ventricle * Corpus callosum * Septum pellucidum * Fornix * Lateral:
Premium Cerebrum Hypothalamus
allows the body to adjust quickly to environmental changes • The endocrine system is designed to maintain control over longer durations • The hypothalamus regulates the pituitary gland through nerve stimulation • However‚ endocrine glands – which are stimulated by the pituitary gland – secrete chemicals that affect nerve activity of the hypothalamus Pituitary Gland (The Master Gland) • “master
Premium Growth hormone Endocrine system Hypothalamus
Hypothalamic-Pituitary- Adrenal Axis Neurotransmitters The HPA axis is a complex set of direct influences and feedback interactions among the hypothalamus‚ the pituitary gland‚ and the adrenal glands. The interactions among these organs constitute a major part of the neuroendocrine system that controls reactions to stress and regulates many body processes‚ including digestion‚ the immune system‚ mood and emotions‚ sexuality‚ and energy storage and expenditure. Several monoamine neurotransmitters
Premium Hypothalamus
primarily in that certain causes of imbalance may be corrected through endocrine intervention. o Seen when homeostasis is being thrown out of balance due to hormonal causes 5. Parts of the Endocrine System- •pituitary gland‚ hypothalamus‚ and
Premium Hypothalamus Endocrine system Growth hormone
AND THE FATRAT Date: 1/27/15 This activity provides a simulated experiment on weight regulation in rats. The Hypothalamus • What are the two techniques used to study hypothalamic dysfunction? How do they differ? The two techniques used to study hypothalamic dysfunction are stimulation and destruction. To simulate the hypothalamus a small wire probe is inserted into the hypothalamus and a weak but constant current is passed through its insulated tip. Generally‚ simulation makes the controlling
Premium Hypothalamus Malnutrition Starvation
and cause a reaction. PGE As it plays a central role in thermal regulation‚ it is unsurprising that destruction of the hypothalamus would result in a lack of febrile response; however‚ experimental evidence shows that direct stimulation of the hypothalamus by IL-1 does not induce fever (6). This potentially contradicting data suggested that although both the hypothalamus and IL-1 appear to be essential to induce fever‚ as the response will not occur when one of these factors is missing‚ there
Premium Hypothalamus Thermoregulation
hormones a. two lobes 1. anterior lobe (adenohypophysis): glandular tissue 2. posterior lobe (neurohypophysis): nervous tissue and is a direct extension of the hypothalamus b. connected to hypothalamus via the infundibulum 2. pituitary-hypothalamus relationships a. vascular connection between the anterior lobe and the hypothalamus b. the hypo. makes releasing/inhibitory hormones (RH/IH) that enter BV to anterior lobe and controls its secretion. c. the vascular system is considered a
Premium Hypothalamus Growth hormone
BIOLOGY 3UU3 - Winter Term II - 2012 Animal Physiology: Regulatory Systems Instructor: C. David Rollo (rollocd@mcmaster.ca) Lectures: (rollocd@mcmaster.ca) Course Coordinator: Marvin Gunderman Wed. 5:30‚ BSB 147 (gundermn@mcmaster.ca) Teaching Assistants Chris DeJong Thur. 5:30‚ BSB 147 If the course is full‚ I cannot help you to get a seat. If the course is close to capacity I do not provide permissions
Free Hypothalamus
Chapter 45 Hormones and the Endocrine System Lecture Outline Overview: The Body’s Long-Distance Regulators An animal hormone is a chemical signal that is secreted into the circulatory system that communicates regulatory messages within the body. A hormone may reach all parts of the body‚ but only specific target cells respond to specific hormones. A given hormone traveling in the bloodstream elicits specific responses from its target cells‚ while other cell types ignore that particular
Premium Endocrine system Endocrine gland Hypothalamus
Endocrine Vs Nervous System The endocrine system acts with nervous system to coordinate the body’s activities. Both systems enable cells to communicate with others by using chemical messengers. The endocrine system uses chemical messengers called hormones that are transported by the circulatory system (blood). They act on target cells that may be anywhere in the body. The endocrine system is slower than the nervous system because hormones must travel through the circulatory system to reach their
Premium Hormone Hypothalamus Growth hormone