Exam (elaborations)
TAMU ANSC 333 - Exam 2 Questions & answers with Complete solutions | Latest edition
- Course
- Institution
TAMU ANSC 333 - Exam 2 Questions & answers with Complete solutions | Latest edition
[Show more]
Seller
Follow
EXAMQA
Reviews received
Content preview
TAMU ANSC 333 - Exam 2Females - ANS-Which gender has a tonic AND surge centered hypothalamus gland?
during fetal development - ANS-When is the hypothalamus formed?
Estradiol is bound by an alpha-fetal protein. It travels in the circulation, but the brain has
a blood-barrier. Estradiol outside the brain makes the surge center. - ANS-How is the
surge center formed?
The testes produce testosterone, which does *not* bind to an alpha-fetal protein,
therefore testosterone can enter the brain. The brain has aromatase, which converts
testosterone to estradiol *inside* the brain. Once *inside the brain, estradiol prohibits the
development of the surge center.* - ANS-Why do males *not* have a surge center in the
hypothalamus? Explain how "the female hormone makes a man, a man."
LH and Testosterone - ANS-The hypothalamus produces GnRH. This causes pulsing of
which hormones?
every 3-6 hours - ANS-How often are pulses of LH?
The hypothalmo-hypophyseal portal system - ANS-Where would one measure GnRH?
After LH pulses. LH is responsible for the stimulation of the Leydig cells, which produce
testosterone. This pattern is constant. - ANS-When does testosterone pulse, and why?
the ovulation of a follicle for possible pregnancy - ANS-What does the frequent pulses
and accumulation cause the LH surge from the surge center of the hypothalamus in
females cause?
1. They have the baby.
2. They are at biological risk because of nutrient requirement changes. - ANS-Why are
females studied more?
1. Acute nutrition "in the now"
2. Long-term nutrition (impacts body condition)
3. Social Environment
4. Genetics
5. Season - ANS-What 5 Things determine the pubescent age:
, -immediate, just hours at a time, regular feed habits and a schedule are important for
growth patterns and acute nutriton.
-Example: the ability of the body to digest glucose, the primary energy source. The body
could go blind to glucose therefore it not reproduce due to the "absence of energy."
GnRH injected into the body, the anterior pituitary still worked, it was just temporary
disabled. - ANS-Describe acute nutritions affects on the pubescent age:
-months at a time, fat accumulation allowing energy stores for pregnancy.
-targets replacement females to have a 283 day gestation, and *breed successfully at
15 months old.*
- preferred sexual maturity at 12 months old to allow a few attempts of pregnancy. -
ANS-Describe long-term nutritions affects on puberty:
GnRH producing neurons. - ANS-What are essentially responsible for controlling the
females cyclicity?
Kisspeptin neurons connect to GnRH neurons. Kisspeptin prevents GnRH from
releasing or surging when any of the 5 factors are subpar.
Kisspeptin receives signals from all factors. - ANS-How does the body recognize all 5
determinants of puberty?
Puberty can be postponed or induced.
Gilts attain puberty typically at 29 weeks, but when in larger/concentrated groups, they
reached puberty sooner.
*Pharamones are accumulated in large groups and they stimulate reproductive activity
via the olfactory system.* - ANS-Explain how the social environment controls the
puberty age:
- some breeds are early maturing; bos indicus struggles to calf by 24 months.
- can be solved by bull selection (larger scrotums)
- bos taurus is reaching puberty at 3-6 months.
- variation even within breeds, a sire with larger testicles
- *good selection cheaper than feeding for fat accumulation* - ANS-Explain how
genetics influences pubescent maturation:
- Takes 6-7 months to attain puberty.
- Sheep breed in the fall and lamb in the spring.
- Attempt to breed around spring for fall lambing and slaughter by the following Easter
season (economical season).
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller EXAMQA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81989 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
Recently viewed by you
