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BIOD 171 Module 6 Exam
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BIOD 171 Module 6 Exam
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BIOD 171 Module 6 ExamExplain two reasons why a woman with low levels of LH would not be able to
become pregnant. - ANSWER (1) LH acts on the ovary to cause ovulation to occur.
(2) LH causes progesterone release to facilitate potential fertilization of the egg and
pregnancy. Progesterone is a key hormone for the maintenance of pregnancy.
Would you expect a female to have testosterone in their bloodstream? Explain why
or why not. - ANSWER (1) Yes. Both male and female bodies produce "all" the sex
hormones. However, the ratios are different. (2) The adrenal glands are largely
responsible for producing this "opposite" hormone that the ovaries would not.
Label the endocrine glands (A-D) A: ______________ B: ______________ C:
______________ D: ______________ - ANSWER A: Thyroid gland B: Adrenal
gland C: Kidney D: Pancreas
3. Label the endocrine glands (A-C) - ANSWER A: Pineal gland B: Hypothalamus
C: Pituitary gland
Explain the concept of negative feedback and how it helps to maintain homeostasis.
- ANSWER 1- The effect or increased level of the hormone acts to shut down the
con!nued release of the hormone. 2- The brain is constantly monitoring hormone
levels to keep levels within a certain range or set-point (homeostasis). Nega!ve
feedback is a way of "turning off" hormone produc!on when the desired level is
achieved
4. Explain the concept of positive feedback. Give an example of a hormone that
works through positive feedback. - ANSWER 1- Positive feedback is the action of a
hormone increasing the production of that hormone. (This is the opposite of negative
feedback). 2- One example is the action of oxytocin causing the uterus to contract
during labor. Oxytocin enhances the effect of the uterus contractions, causing more
oxytocin to be released. The positive feedback loop is stopped once the baby is born
and the uterus no longer needs to contract, stopping the production of oxytocin.
This type of hormone is derived from cholesterol:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine - ANSWER C
5. This type of hormone is derived from proteins:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine - ANSWER A
6. Growth hormone____
, A. is most active during childhood/adolescence.
B. can cause disease if levels are not correct.
C. cannot affect an adult.
D. A &B - ANSWER D
6. Growth hormone______
A. is most active during adulthood.
B. is produced by the anterior pituitary gland.
C. underproduction is called acromegaly.
D. A &C - ANSWER B
7. Neurosecretory cells are a part of what endocrine organ? Thalamus
Pituitary
Cerebellum
Hypothalamus - ANSWER Hypothalmus
7. Neurons in the hypothalamus are called ______
Neurosecretory
Vasopressin
Melanocytes
Somatotropic - ANSWER Neurosecretory
8. Which hormone production is increased with sunlight?
MSH -melanocyte stimulating hormone
Melatonin
Cortisol
GH -Growth hormone - ANSWER MSH -melanocyte stimulating hormone
8. Which hormone production is decreased with sunlight?
A. MSH -melanocyte stimulating hormone
B. melatonin
C. cortisol
D. GH -Growth hormone - ANSWER B
9. The posterior pituitary stores these two hormones:
ADH and LH
ADH and Oxytocin
LH and FSH
TSH and Prolactin - ANSWER ADH and Oxytocin
9. The posterior pituitary stores these two hormones:
ADH and Prolactin
TSH and LH
LH and FSH
ADH and Oxytocin - ANSWER ADH and Oxytocin
10. List the hormone(s) that best describes the statement below: I lower the level of
calcium in the blood by depositing calcium into bone. - ANSWER Calcitonin
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