Repro pharm

Question 1

Stages of the estrous cycle

Answer 1

Proestrus, estrus, metestrus/diestrus, anestrus

Question 2

What are the 2 phases of the estrous cycle?

Answer 2

Follicular phase and Luteal phase

Question 3

What produces Progesterone?

Answer 3

Corpus Luteum and placenta

Question 4

GnRH analogs

Answer 4

Gonadotropin-releasing hormone

Question 5

What are Gonadorelins used for?

Answer 5

Stimulation of FSH release and approved for short term use, they are also used to bring cattle into estrus at the same time

Question 6

Trade names for gonadorelins

Answer 6

Cystolrelin, Factrel, fertagyl, ovacyst

Question 7

These are less frequently used in vet med and produce their effects on the gonads (ovaries and testes)

Answer 7

Gonadotropins

Question 8

What can progestins prevent?

Answer 8

An animal from coming into estrus

Question 9

Used to either regulate the onset of heat for more effective breeding or used to delay the onset of estrus when time is better for the animal

Answer 9

Altrenogest (Regu-mate)

Question 10

A feed additive, used in cattle, suppresses the estrous cycle or prolongs diestrus

Answer 10

Melengestrol acetate (MGA)

Question 11

Slender silicon rubber implants, prolongs diestrus in cattle, continuous supply of progesterone for days

Answer 11

Controlled internal drug release (CIDR)

Question 12

This drug is used in spayed female dogs to treat urinary incontinence

Answer 12

Estradiol tablets and Estriol (Incurin)

Question 13

Banned in food animals, growth-promoting, or anabolic steroid

Answer 13

Diethylstilbestrol (DES)

Question 14

What are some side effects of estrogens?

Answer 14

predispose the urethras to infection and pyometra
Suppress blood cell production resulting in an aplastic anemia

Question 15

Drugs that are recognized by the stem -prost

Answer 15

Prostaglandins

Question 16

Major role in sychronizing estrous cycles, lyse in the CL, causes progesterone levels to drop

Answer 16

Prostaglandins

Question 17

Dinoprost tromethamine

Answer 17

Lutalyse, Prostamate, In-Sync

Question 18

A prostaglandin that is easily absorbed through the skin and can easily produce CL lysis and bronchoconstriction in people

Answer 18

Cloprostenol (Estrumate)

Question 19

Mibolerone

Answer 19

Androgen hormone, similar to testosterone, interrupts the estrous cycle by inhibiting LH release

Question 20

Causes CL lysis, results in a decrease in progesterone level and subsequent fatal death

Answer 20

Prostaglandin F2

Question 21

Prostaglandin F2 approved for termination of pregnancy in mares

Answer 21

Dinoprost tromethamine

Question 22

Bind with and stimulate dopamine receptors, Prolactin inhibited, has a decline of progesterone necessary for monitoring pregnancy/terminating pregnancy

Answer 22

Dopamine agonists

Question 23

The corticosteroid that may induce abortion or premature parturition in mares or cattle. it mimics elevated levels of cortisol that happens at the beginning of a normal parturition

Answer 23

Dexmethasone

Question 24

What is the endogenous hormone released from the pituitary gland that causes contraction of they myometrium.

Answer 24

Oxytocin

Question 25

What could oxytocin be used for?

Answer 25

Dystocia, increase expulsion of placental materials, decrease uterine hemorrhage, milk let down