ANAT 101 Study Guide - Midterm Guide: Endoplasmic Reticulum, Adenosine Triphosphate, Golgi Apparatus

• School: Drexel University
• Department: Anatomy
• Course: ANAT 101
• Professor: Rompolski Krista

Document Summary

Homeostasis- a condition of equilibrium (body staying in a certain range) or balance in the body"s internal environment, maintained by a regulatory process. Negative feedback: disruption of homeostasis causes a chain reaction that brings body back to normal conditions o. Blood pressure: baroreceptors see rise in bp so they dilate blood vessels therefore making the heart rate slow down. Positive feedback: disruption of homeostasis causes further deviations o. Blood clotting: more platelets aggregate, until there is enough to clot the cut. Child birth: head starts pressing on cervix and cervix keeps contracting until o the baby is delivered. Explain how a stimulus changes a controlled condition, and how a receptor, control center and effector organ respond to this stimulus. o. Stimulus disrupts homeostasis by increasing or decreasing controlled condition that is monitored by receptors (input) that send nerve impulse or chemical signals to the control center receives the input and provides nerve impulse of chemical signal (output).