4 Learning (Firm), 2001
|材料类型：||剪辑艺术/影像/图形, 互联网资源, 录像|
|文件类型：||互联网资源, 计算机文档, 视觉资料|
|所有的著者/提供者：||4 Learning (Firm); Films for the Humanities & Sciences (Firm); Films Media Group.|
|注意：||Films on Demand is distributed by Films Media Group for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.
Encoded with permission for digital streaming by Films Media Group on Jan. 29, 2007.
Title from distributor's description.
|描述：||1 streaming video file (20 min.) : sd., col., digital.|
|详述：||Mode of access: Internet.; System requirements: FOD playback platform.|
|内容：||Homeostasis-Regulating Body Conditions (3:04) --
Changes in the Body (3:08) --
Hypothalamus: Change Detector (4:28) --
Pancreas: Blood Glucose Regulator (25:19) --
Water Regulation: Kidneys and Urinary System (3:56) --
Homeostasis: A Necessary Process (1:56).
|丛书名：||Virtual body.; Films on Demand.|
|责任：||4 Learning (Firm).|
This program investigates how the body controls its internal environment. The steady state of the Earth's biosphere is compared to that of the human body. An automated greenhouse and a computerized inventory system demonstrate how negative feedback loops use detection and response to maintain their own balanced states. The regulation of body temperature in response to extreme heat and cold is explored both in a sauna and on a mountain slope. The roles of the pancreas and liver in controlling blood glucose levels are described. And the control of water concentration at the cellular level and waste filtration via the kidneys are explained. The impact of alcohol consumption on temperature regulation and water management is also considered.