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33 Cards in this Set
- Front
- Back
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What are the six hormones produced the anterior pitutary?
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FSH,LH, LTH,STH, ACTH and TSH
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What are the two produced by the anterior pituitary?
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Oxytocin and Vasopressin
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What is function and what organ does FSH affect?
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Ovary or Testes
Responsible for formation of sperm and eggs |
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What is the function and what organ does LH affect?
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Testes or Ovary
Need LH surge to have ovulation stimulates production of testerone |
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What is the function and what organ does LTH affect?
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Luteotropic and also known Prolactin
stimulates milk production in rats:controls formation of CL |
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What is the function and target organ of TSH?
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affects thyroid to secrete thyroxine and affects metabolic rate
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What is the function and target organ of ACTH?
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secreted from adrenal cortex
producting aldosterone and corticods |
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What are the three corticods?
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cortisone, cortisol and corticosterone
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What is the function and target organ of STH or GH?
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Growth hormone throughout the body
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What is the function and target organ of Oxytocin?
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Uterine contraction and milk let down
comes from hypothalamus |
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What is the function and target organ of Vasopressin?
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Water balance
from hypothalamus |
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What is the hypothalamic hormone and what is its function/target organ?
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low level=FSH
high level=LH helps get rid of cystic follicles |
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What produces testerone?
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leydig cells
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What are the different estrogen compounds?
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estrodiol, estrone and estrol
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What produces estrogen?
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ovary
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What is progesterone produced by?
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CL and placenta
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What is Relaxin and what is secreted by?
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ovary, placenta or combination
helps to relax and soften pelvis muscle in the cervix |
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What is inhibitin?
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inhibits FSH to slow the rate of sperm development
secreted by Sertoli cells |
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What is PGF?
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-Luteolytic
-causes CL to regress and uterine contractions to occur -major component of heat synch -produced by uterine enodmetrium |
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What is PMS?
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-specialized cells in endometrium
-FSH and LH like activity -causes release of progesterone until placenta mature enought to release(Accesory CLs) |
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What is HCG?
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-produced by chorin of placenta
-secrete progesterone until the placenta can on its own -used to super ovulate |
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What is HCG?
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-produced by chorin of placenta
-secrete progesterone until the placenta can on its own -used to super ovulate |
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How many nanograms must be in the blood for puberty to be visible?
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8 nanograms
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What is sexual maturity?
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time when animal is physiologically, anatomically and physically able to sustain repro. process and successfully care for and deliever live offspring
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What happens during estrus?
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-max follicular size reached
-max estrogen prod. -max sexual receptivity -ends with ovulation |
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What happens during metaestrus?
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-transtional phase
-CL forming -estrogen gradually dropping and progesterone gradually rising - not much variation between species |
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What happens during diestrus?
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-Longest phase of cycle and continued if pregnancy
occurs -CL fully functional -highest progesterone level |
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What happens during proestrus?
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-transitional phase
-CL regresses -follicular devp. Begins -decrease progesterone and increase estrogen |
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Cattle Estrous Cycle?
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Estrus-15 to 18 hrs
Metaestrus-Day 2 to 4 Diestrus-Day 5-17 Proestrus-Day 18-21 |
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Sheep Estrous Cycle?
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Estrus-35 hrs
Metaestrus-Day 1-4 Diestrus-Day 5-13 Proestrus-Day 14-17 |
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Swine Estrous Cycle?
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Estrus-Day 1-2
Metaestrus-Day 3-5 Diestrus-Day 6-17 Proestrus-Day18-21 |
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Horse Estrous Cycle?
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Estrus-Day 1 to 6
Metaestrus-Day 7-9 Diestrus-Day 10-17 Proestrus-Day 18-21 |
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What is the difference between ipsilateral and condralateral?
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Ipsilateral-same side
Condralateral-opposite side |
