BIOD 151 Module 6 Exam 2022-2023 Latest Exam w/ Brand New Q & A
M6: Exam- Requires Respondus LockDown Browser
Due No due date Points 100 Questions
... [Show More] 26
Requires Respondus LockDown Browser Time Limit 60 Minutes
Attempt History
Attempt Time Score
LATEST Attempt 1 60 minutes 100 out of 100
Score for this quiz: 100 out of 100
Submitted Feb 16 at 8:50am
This attempt took 60 minutes.
Question 1 5 1 5 pts
Explain two reasons why a woman with low levels of LH would not be able to become pregnant.
Your Answer:
LH causes ovulation to occur and it causes progesterone release, which is the most important hormone for maintaining pregnancy. Low LH would prevent a woman from becoming pregnant.
(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.
Question 2 5 1 5 Pts
Would you expect a male to have estrogen in their bloodstream? Explain why or why not.
Your Answer:
Yes.
Both genders produce all the sex hormones, but the levels of each hormone vary by gender. For men, the gonads make testosterone and the adrenal glands secret estrogen.
(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 testis would not.
Question 3 10 1 10 Pts
Label the endocrine glands (A-D)
B: c:
D:
Your Answer:
a. thyroid gland
b. adrenal gland
c. kidney
d. pancreas
A: Thyroid gland B: Adrenal gland
C: Kidney
D: Pancreas
Question 4 10 1 10 pts
Explain the concept of negative feedback and how it helps to maintain homeostasis.
Your Answer:
The brain monitores hormone levels to maintain homeostasis. In a negative feedback loop, the increased level of a hormone signals feedback to stop the continued release of that hormone.
1- The effect or increased level of the hormone acts to shut down the continued release of the hormone.
2- The brain is constantly monitoring hormone levels to keep levels within a certain range or set-point (homeostasis). Negative feedback is a way of "turning off" hormone production when the desired level is achieved
Question 5 2 1 2 pts
This type of hormone is derived from cholesterol
Peptide hormones
Catecholamines
O Steroid hormones
Tyrosine
Correctl
Question 6 2 1 2 pts
Growth hormone
A. is most active during childhood/adolescence.
B. can cause disease if levels are not correct.
C. cannot affect an adult.
Correctl
Question 7 2 1 2 pts
Neurons in the hypothalamus are called
Neurosecretory
Vasopressin
Melanocytes
Somatotropic
Correctl
Question 8 2 1 2 pts
Which hormone production is increased with sunlight?
o MSH —melanocyte stimulating hormone
Melatonin
Cortisol
Correctl
GH -Growth hormone
Question 9 2 1 2 pts
The posterior pituitary stores these two hormones:
ADH and Prolactin
TSH and LH
LH and FSH
ADH and Oxytocin
Correctl
Question 10 2.5 1 2.5 pts
List the hormone(s) that best describes the statement below:
I lower the level of calcium in the blood by depositing calcium into bone.
Your Answer:
calcitonin
Calcitonin
Question 11 2.5 1 2.5 Pts
List the hormone(s) that best describes the statement below:
I am secreted by the pituitary and stimulate the gonads.
Your Answer:
FSH or LH - gonadotropic hormones
FSH
Gonadotropic hormones
Question 12 2.5 1 2.5 pts
List the hormone(s) that best describes the statement below:
I am secreted by the pituitary to stimulate the adrenal cortex.
Your Answer:
ACTH
ACTH
Question 13 2.5 1 2.5 pts
List the hormone(s) that best describes the statement below:
I cause blood glucose to rise and breakdown stored nutrients.
Your Answer:
glucagon
Glucagon
Question 14 10 1 10 pts
Answer the following question.
Explain in detail how PTH and calcitonin work to maintain calcium balance.
Your Answer:
Parathyroid hormone (PTH) causes calcium absorption from the intestines and it keeps calcium when the kidneys eleminate phosphates. It also stimulates demineralization of bone, which then causes calcium to increase in the blood. PTH and calcitonin work togeather to maintain blood calcium levels. PTH increases the calcium level in blood. Calcitonin lowers the calcium levels in blood and deposits calcium into the bone. When blood calcium levels are adequate, the parathyroid glands stop producing PTH.
Calcitonin: produced by the thyroid glands, deposits calcium into bone. Calcitonin opposes the action of PTH. When the blood calcium level reaches the appropriate level through all these means, the parathyroid glands stop producing PTH through negative feedback.
PTH: produced by the parathyroid glands increase the amount of calcium in the blood. (Any one of the following explanations of PTH is acceptable)
PTH stimulates the increased absorption of calcium from the intestines.
PTH retains calcium through excreting phosphate at the kidneys.
In the bones, PTH promotes the activity of osteoclasts to demineralize of the bone, increasing the amount of calcium in the blood.
Question 15 2 1 2 pts
Where is thyroid stimulating hormone produced?
Pineal
Thyroid
Thymus
Anterior Pituitary
Posterior Pituitary
Correctl
Question 16 2 1 2 pts
Which gland decreases in size with age?
Thyroid
O Thymus
Pituitary
Adrenal
Correctl
Question 17 2 1 2 pts
Iodine is needed to produce which hormone/s?
A. Gonadotropic
D. TSH
E. B&C
(Thyroid hormones cannot be produced without iodine)
Correctl
Question 18 2 1 2 pts
Which of the following is NOT a function of oxytocin?
Growth of uterus and vagina
Correctl
Uterine contraction
Milk letdown
Given to aid in childbirth process
Question 19 2 1 2 pts
Which hormones are produced in the anterior pituitary?
TSH, MSH, and calcitonin
ADH, GH, and prolactin
Ô ACTH, FSH, and CH.
PTH, TSH, and LH
Correctl
Question 20 10 1 10 pts
Explain in detail why the thyroid becomes enlarged during an iodine deficiency?
Your Answer:
When idodine is lacking in the diet, the thyroid enlarges (goiter).
If thyroxin is low, TSH is produced and the thyroid increases in size. An enlarged thyroid is not effective, because thyroxin can't be produced without iodine. [Show Less]