Chapter 1

define the organ systems

groups of organs function in a coordinated manner

oxytocin is a hormone that is released in response to cervical dilation. it in turn causes more uterine contractions that will further dilate the cervix. what type of feedback loop does oxytocin trigger?

positive feedback loop

define the term organs

a collection of different tissues that carry out related functions

define the term tissue

a collection of similar cells that carry out similar functions

you conduct an experiment on twenty 18-yo male subjects to see how various intensities of exercise influence heart rate. Which of the following is/are considered a dependent variable?

age of subjects sex of subjects intensity of exercise independent variable is heart rate

you want to display data on the finish times of the 10 fastest race horses in a single race at the Kentucky Derby. What type of graph would be best to display this information?

bar graph

a horse runs 10 races, each a mile long, during a 6-month period, and you are interested in determining if the horse's race time changes with experience. You set up a graph to display the race finish times of this horse. What type of graph would be best to display the race finish times of this horse?

line graph (since it compares data and shows how it connects over time. Second choice would be scatter plot but ti does not connect data and does not show any possible trends).

physiology is the study of

the normal functions of the organ system