Endocrine System Study Guide
ANSWER KEY
1. What is the function of the endocrine system?
To secrete hormones
2. Match the hormone with its function.
Luteinizing Hormone M
Vasopressin K
a. Promotes the utilization of glucose by cells. If not delivered
appropriately a person may develop diabetes
b. Plays a part in the menstrual cycle of females
Oxytocin L
c. Responsible for secondary sex characteristics in males
Growth Hormone N
d. Male sex hormones
Prolactin Q
e. Development of female secondary sex characteristics
Thyroid-Stimulating Hormone
R
f.
ACTH
O
Follicle-Stimulating Hormone
P
g. Responsible for metabolism and can be affected by high levels of
stress causing weight gain.
h. Controls calcium levels in the blood by taking calcium from
bone.
Thyroxine I
Calcitonin H
i.
j.
Parathormone J
Insulin A
k. Acts on kidneys to concentrate urine and preserve water in the
body.
l. Released DURING childbirth to cause uterine contractions and
produce breast milk.
m. Stimulates ovulation in females
Prostaglandins T
Androgens D
n. Responsible for growth and development
o. Stimulates adrenal cortex during stressful situations.
Adrenalin F
Corticoids G
p. Stimulates growth of follicles in females
q. Develops breast tissue and stimulates milk production AFTER
birth.
r. Stimulates thyroxine production
T Cells S
Testosterone C
Estrogen E
Progestrone B
A powerful cardiac stimulant responsible for the “flight or fight”
situation.
Controls the rate of metabolism
Control blood calcium levels preventing HYPOcalcemia
s. Help during immune responses.
t. Can cause constriction of blood vessels and muscle contractions.
Used to induce labor.
3. Determine the gland that secretes each of the above hormones. The glands are listed below:
Pituitary Gland: LH, vasopressin, oxytocin, growth hormone, prolactin, TSH, ACTH, FSH
Thyroid Gland: Thyroxine, calcitonin
Parathyroid Gland: parathormone
Thymus: T-cells
Pancreas: Insulin
Adrenal Gland: androgens, adrenalin, corticoids
Testes: Prostoglandin, testosterone
Ovaries: estrogen, progesterone, prostoglandin
4. List a disorder that can occur with each of the following hormones. (On your rest this will be
matching)
a. Thyroxin
Goiter
b. Calcitonin
Kidney stones, tetany
c. Insulin
diabetes
d. Growth Hormone
dwarfwism
e. Corticoids
Cushing’s syndrome
5. Determine what could be wrong with the following patients:
1. Patient 2: 15 year old Female
Symptoms include
* Excess facial and body hair
* Baldness
* Acne
* Deepening of the voice
* Increased muscularity
* Increased sex drive
What hormone is causing it? testosterone
What gland is it being secreted from? gonads
2. Parents of a 5 year old girl are told by doctors that the reasons for the girl’s chrnic illnesses are a
weak immune system and low T-cell count.
a. Hormone: we didn’t talk much about the hormone sorry!
b. Gland where produced do know it’s the thymus!
3. A recently divorced middle-aged man who has also changed jobs and works long hours because he
is stressed about receiving a promotion goes to the doctor because he has been gaining a lot of
weight, especially in his abdominal region. The doctor notices that his face looks swollen and his
blood-sugar levels are low. The doctor advises him to do some activities that will reduce stress and
raise his metabolism in order to lose weight.
Hormone(s): Coritcoids
Gland where produced: Adrenal Cortex
4. A woman brings her child into the doctor to determine the cause of the child’s small stature and
extremely slow growth rate. There is no hereditary history of dwarfism in the family
a. Hormone: growth hormone
b. Gland where produced: pituitary gland
5. A 15 year old boy who still displays all the physical characteristics of boys 4-5 years younger than him
and has not begun to show any developmental changes indicating he is entering manhood.
Hormone(s): testosterone
Gland where produced: gonads (testes)
6. Label the glands in the picture below:
7. Explain hormone control using negative feedback.
1. Blood level of hormone falls
2. Brain gets message and sends out hormone to stimulate gland (example hypothalamus sends
messages to pituitary gland to send out hormones)
3. Gland stimulates production of more hormone
4. When blood level of hormone increase, the brain hormones stops.