Term
Another word for "cold-blooded"
These animals have body temperatures which match that of their external environments
-Fish, reptiles, amphibians |
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Definition
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-Opposite of poilkilothermic
-warm blooded (core body temp of 37 degrees keeps proteins from breaking down)
-mammals and birds |
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Definition
-Next to anterior hypothalamus
-regulates temperature by 1) monitoring its own temperature and 2) recieving input from skin and spinal cord. |
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| -Cytokines are released which 1) attack intruders and 2) provide info to brain via vagus nerve---> low grade fever keeps disease at bay. |
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-Temperature regulated via shivering/sweating
-Other ways include migration
-Cold blooded animals select their environments so that they are well suited. |
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| What organ plays an important role in regulating water intake? |
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Definition
KIDNEYS
ADH/antidiuretic hormone/vassopresin |
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| Posterior pituitary gland |
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Definition
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| Describe the drinking pathway |
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Definition
| OVLT-->supraoptic nucleus --> PVN (paraventricular nucleus) --> later preoptic nucleus |
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Definition
low blood volume
nutrients cannot be delivered |
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Definition
large veins that
1) monitor pressure of blood returning to heart
2) release RENIN in the kidney to detect low blood volume. |
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Definition
| causes proteins in blood to form Angiotensin I --> angiotensin II |
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Definition
-(a vasoconstrictor which increases blood pressure)
-stimulates SFO (subfornical organ) to initiate drinking |
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| Majority of food digestion occurs here. |
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| What source is the body's main fuel? |
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| Examines the nature of the digestive system by tricking the body into thinking that it has recieved food. Commonly used to investigate binge-eating disorder. |
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| What two nerves convey satiety to the brain? |
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Definition
| Vagus and splanchnic nerves |
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Term
| Food passes from the stomach to this structure called ...? |
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Definition
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| What is the pathway for eating food? |
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Definition
| Swallow food --> stomach ---> duodenum --> hormone CCK (cholecystokinin) releases --> sphincter b/w dudenum and stomach closes. |
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Definition
| allows food to enter cells where it can be either stored or used as fuel. |
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Definition
Converts stored fuel like glycogen to glucose
Opposite of insulin |
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Term
| LH (Lateral Hypothalamus) damage effects what? |
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Definition
| results in reduced hunger and thirst |
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Term
| What are the stages of recovery for LH damage? |
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Definition
1) Aphasia and adipsia
2) Anorexia
3) Adipsia
4)Near recovery, but still reduced body weight set point. |
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