ANS 331 - Exam 2 (Fall 2024) REVIEW
UPDATED Study Guide QUESTIONS
AND CORRECT ANSWERS
In livestock species, which phase of estrous lasts the longest? - CORRECT
ANSWERS diestrus
Which part of the pituitary has a specialized capillary system? - CORRECT
ANSWERS anterior pituitary / Adenohypophysis
Where is oxytocin produced? - CORRECT ANSWERS PVN
What is the function of the hypothalamo-hypophyseal portal system? -
CORRECT ANSWERS To allow minute quantities of GnRH to act on
the anterior pituitary
What structure is the neural control center for hormones? - CORRECT
ANSWERS hypothalamus
In the posterior pituitary, where are neurohormones deposited? - CORRECT
ANSWERS Directly into the capillaries
Suppression of GnRH neurons = __________ feedback - CORRECT
ANSWERS negative
Hormones under nervous control that are released under a sudden burst or pulse
are: - CORRECT ANSWERS episodic
,Name a reproductive hormone involved in positive feedback? - CORRECT
ANSWERS estradiol
When progesterone concentrations are high, there is ___________ on GnRH. -
CORRECT ANSWERS negative feedback
Which type of hormone(s) bind to plasma membrane receptors? - CORRECT
ANSWERS protein and fast steroid
Which type of hormone(s) bind to nucleus receptors? - CORRECT ANSWERS
slow steroid
The steroid hormone receptor response that mimics protein hormone receptor
response is: - CORRECT ANSWERS fast
Which type of hormone signal requires a neurohormone to enter the
bloodstream and enter a remote target tissue? - CORRECT ANSWERS
Neuroendocrine reflex
Which type of receptors bind protein hormones? - CORRECT ANSWERS
plasma memebrane receptors
Which control center of the hypothalamus responds to negative feedback? -
CORRECT ANSWERS Tonic center
FSH and LH are examples of what? - CORRECT ANSWERS
Glycoproteins
Which type of hormone response involves mRNA and protein synthesis? -
CORRECT ANSWERS Slow response
,Progesterone secretion is an example of ________ secretion. - CORRECT
ANSWERS sustained
Which of the following is an example of a gonadotropin?
· Prostaglandin
· Oxytocin
· FSH
· GnRH - CORRECT ANSWERS FSH
The number of receptors is _____ correlated with response. - CORRECT
ANSWERS Positively
This method of measuring hormone concentrations involves isotope detection -
CORRECT ANSWERS RIA
What is the pattern of LH secretion in males? - CORRECT ANSWERS
small, continuous pulses every 2-6 hours
The male Hypothalamus does not have a ___________. - CORRECT
ANSWERS surge center
In which sex is puberty better understood? - CORRECT ANSWERS
female
Attainment of puberty is more accurately described as: - CORRECT
ANSWERS occurring over a period of time (a dimmer switch)
, In the female, what are the two main factors effecting the onset of puberty? -
CORRECT ANSWERS · Exposure to environmental or social cues
· Threshold body size
The hypothalamus is inherently ___________. - CORRECT ANSWERS
female
Which is true about the male?
· LH does not surge
· The surge center is under the control of negative feedback
· Puberty attainment is like an on/off switch - CORRECT ANSWERS
LH does not surge
What factors affect age at puberty in the female? - CORRECT ANSWERS
Genetics
Body condition
Male presence
Group size and density
Season born
Which of the following is NOT considered the onset of puberty in females?
· First parturition
· First estrous
· First confirmed pregnancy
· First ovulation - CORRECT ANSWERS First parturition
What two physical factors work together to cause ovulation? - CORRECT
ANSWERS 1. Collagenase weakens basement membrane
UPDATED Study Guide QUESTIONS
AND CORRECT ANSWERS
In livestock species, which phase of estrous lasts the longest? - CORRECT
ANSWERS diestrus
Which part of the pituitary has a specialized capillary system? - CORRECT
ANSWERS anterior pituitary / Adenohypophysis
Where is oxytocin produced? - CORRECT ANSWERS PVN
What is the function of the hypothalamo-hypophyseal portal system? -
CORRECT ANSWERS To allow minute quantities of GnRH to act on
the anterior pituitary
What structure is the neural control center for hormones? - CORRECT
ANSWERS hypothalamus
In the posterior pituitary, where are neurohormones deposited? - CORRECT
ANSWERS Directly into the capillaries
Suppression of GnRH neurons = __________ feedback - CORRECT
ANSWERS negative
Hormones under nervous control that are released under a sudden burst or pulse
are: - CORRECT ANSWERS episodic
,Name a reproductive hormone involved in positive feedback? - CORRECT
ANSWERS estradiol
When progesterone concentrations are high, there is ___________ on GnRH. -
CORRECT ANSWERS negative feedback
Which type of hormone(s) bind to plasma membrane receptors? - CORRECT
ANSWERS protein and fast steroid
Which type of hormone(s) bind to nucleus receptors? - CORRECT ANSWERS
slow steroid
The steroid hormone receptor response that mimics protein hormone receptor
response is: - CORRECT ANSWERS fast
Which type of hormone signal requires a neurohormone to enter the
bloodstream and enter a remote target tissue? - CORRECT ANSWERS
Neuroendocrine reflex
Which type of receptors bind protein hormones? - CORRECT ANSWERS
plasma memebrane receptors
Which control center of the hypothalamus responds to negative feedback? -
CORRECT ANSWERS Tonic center
FSH and LH are examples of what? - CORRECT ANSWERS
Glycoproteins
Which type of hormone response involves mRNA and protein synthesis? -
CORRECT ANSWERS Slow response
,Progesterone secretion is an example of ________ secretion. - CORRECT
ANSWERS sustained
Which of the following is an example of a gonadotropin?
· Prostaglandin
· Oxytocin
· FSH
· GnRH - CORRECT ANSWERS FSH
The number of receptors is _____ correlated with response. - CORRECT
ANSWERS Positively
This method of measuring hormone concentrations involves isotope detection -
CORRECT ANSWERS RIA
What is the pattern of LH secretion in males? - CORRECT ANSWERS
small, continuous pulses every 2-6 hours
The male Hypothalamus does not have a ___________. - CORRECT
ANSWERS surge center
In which sex is puberty better understood? - CORRECT ANSWERS
female
Attainment of puberty is more accurately described as: - CORRECT
ANSWERS occurring over a period of time (a dimmer switch)
, In the female, what are the two main factors effecting the onset of puberty? -
CORRECT ANSWERS · Exposure to environmental or social cues
· Threshold body size
The hypothalamus is inherently ___________. - CORRECT ANSWERS
female
Which is true about the male?
· LH does not surge
· The surge center is under the control of negative feedback
· Puberty attainment is like an on/off switch - CORRECT ANSWERS
LH does not surge
What factors affect age at puberty in the female? - CORRECT ANSWERS
Genetics
Body condition
Male presence
Group size and density
Season born
Which of the following is NOT considered the onset of puberty in females?
· First parturition
· First estrous
· First confirmed pregnancy
· First ovulation - CORRECT ANSWERS First parturition
What two physical factors work together to cause ovulation? - CORRECT
ANSWERS 1. Collagenase weakens basement membrane
