Chapter 6 The Endocrine System • MHR 205(a)Construct a graph that plots mass on the
vertical axis and age on the horizontal axis.
(b)Plot the data in the table for the average
female growth in mass from ages 8 to 18.
Connect the points with a red line.
(c)On the same graph, plot the data for the
average male growth in mass from ages 8 to- Connect the points with a blue line.
(d)Construct a separate graph that plots height
on the vertical axis and age on the
horizontal axis.
(e)Plot the data for the average female growth
in height from ages 8 to 18. Connect the
points with a red line. Plot the data for
the average male growth in height from
ages eight to 18. Connect the points with
a blue line.
(f)During what ages do females and males
increase the most in mass? in height?
(g)How can you explain the differences in
growth between males and females?
(h)Interpret the data to find if the average
growth rate is the same in males and females.
31.The following graph represents the average
blood concentration of four circulating
hormones collected from 50 healthy adult
women who were not pregnant.
Use the graph to answer the following questions:
(a)Which line represents luteinizing hormone?
(i)red line
(ii)blue line
(iii)yellow line
(iv)green line
(b)Which hormone increases during the last
half of the menstrual cycle?
(i)estrogen
(ii)progesterone
(iii)LH
(iv)FSH
(c)Which hormone is responsible for
stimulating the egg development each
month?
(i)estrogen
(ii)progesterone
(iii)LH
(iv)FSH
32.Many women do not begin to ovulate until
after they finish nursing their newborn babies.
What hormones would be involved in this
phenomenon? Formulate a hypothesis related
to how these hormones would interact.
33.Caffeine is not a controlled substance, and
yet it can affect the body in many ways.
(a)Review the various ways caffeine can affect
the body.
(b)Identify an endocrine system that may be
affected by caffeine. Prepare a prediction.
(c)Propose a research program to investigate
your prediction.
34.In addition to the reproductive hormones you
have studied in this unit, there are a number
of hormones and neurotransmitters that
contribute to both physical and emotional
changes. Chocolate contains some of these
chemicals. Is chocolate the food of love? What
information do you require before you can(^0102030)
Concentration in blood
Day of Cycle
Age Female Male Female Male
25
28
31
37
38
43
50
57
62
65
68
8
9
10
11
12
13
14
15
16
17
18
25
28
31
35
40
47
50
54
57
58
58
Mass (kg) Height (cm)123
129
135
140
147
155
159
160
163
163
163
124
130
135
140
145
152
161
167
172
174
178
Averages for Growth in Humans