KINESIOL 1Y03 Lecture Notes - Lecture 1: Homeostasis, Heart Rate, Stroke Volume

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 1Y03
• Professor: Krista Howarth

Document Summary

Exercises increases body temperature and heat production. Maintain body temperature by sweating (water from blood, blood volume may decrease, resulting in drop in blood pressure) or shivering. Heart rate (beats per minute) increases to maintain blood flow. Desire for water increases, intake of water increases, replenish water stores. Homeostasis body uses coordinate physiological responses to maintain a constant environment. The existence and maintenance of a relatively constant environment within the body. Ability/tendency to maintain internal equilibrium by adjusting processes. Values of variables fluctuate around the set point to establish a normal range. Set point the ideal normal value of a variable. Blood glucose, pressure, body temperature fluctuate throughout the day. Two types: negative (good) and positive (usually bad) Stimulus deviation from the set point; detected by the receptor (i. e. hot environment) Response produced by the effector (i. e. target tissues and cells), they bring the variable back to the set point.