Part Two of Puberty
Note in the second figure the low amplitude and frequency. The increasing amount of chemical
means more gonadotropins.
6-3 Follicles will create estradiol and create positive feedback to release GnRH. This causes the
Chapter Six: Puberty (A Mystery!)
Sexual Differentiation of the Hypothalamus (Sex on the Brain)
- mostly experimented in rats
- alphafetoprotein produced by the fetal liver, binds to circulating estradiol
Definitions of Puberty Between the Sexes
Reproduction Exam Answers, Statistics Spring 2013
Standard Deviation: 11.87
The bulbous glandis does not ossify. The distal penis does.
The caput is not part of the spermatic cord.
Germ cells in the ovary develop almos
Photoperiod on hypothalamic pituitary axis and gonadal function
Seasonal breeders sheep are fall or short day breeders, and the mare is a spring or long
Shep cycle in fall but gain pubertal weight in five to six months
Chapter Seven: Estrous Cycle
The estrous cycle offers repeated opportunities for the female to become pregnant. Continuous
from onset of puberty unless anestrus occurs. Anestrous may occur due to:
- nutrition defects
Menstrual versus Estrus Cycles
- Duration of phases
- No standing estrus in primates
- Sloughing of endometrium
Figure 9-15 Endometrium of primates
Anestrus is due to season, lactation, pregnancy, and post partum healing.
A return to estrus can l
Not essential to an individuals existence. This is why neutered pets survive. This is
Essential to the perpetuation of a species.
Cyclic nature in females (and males) create repeated opportunities to establish and sustain