Puberty

Question 1

The definition of puberty is..

Answer 1

When the organism has the ability to produce gametes able for reproductive success

Question 2

What must happen in females to induce ovulation?

Answer 2

Hypothalamic GnRH neurons must respond to E2 in a positive feedback

Question 3

At what age can puberty be measured in females?

Answer 3

Where she can support a fetus

Question 4

What are 2 factors that impact the development of the response to GnRH?

Answer 4

Threshold body size and environmental or social issues

Question 5

How can season affect puberty in females?

Answer 5

In seasonal breeders: lambs born in spring reach puberty earlier than those born in fall

In non-seasonal: heifers calved in fall tend to reach puberty earlier

Question 6

What are some examples of social cues in females that affect puberty?

Answer 6

Male presence and group dynamics

Question 7

Which type of secretion is present in the tonic center of pre-pubertal females?

Answer 7

Basal at a low amplitude and level of GnRH

Question 8

After puberty, what changes in the secretion of GnRH ?

Answer 8

Higher basal levels and frequency of secretion from tonic center and sudden preovulatory surges from surge center

Question 9

What’s the major limiting factor in females for the age of puberty?

Answer 9

Secretion of consistent GnRH from the hypothalamus

Question 10

What type of feedback is in males from estradiol?

Answer 10

Negative

Question 11

What’s the onset of age of puberty for males?

Answer 11

Age at which the ejaculate has enough sperm