Therio Fun Quiz

Question 1

Identify this device:

Answer 1

CIDR

Controlled Internal Drug Release​

Question 2

An agent that causes the uterus to contract is called a(n):

Answer 2

ecbolic

Question 3

Identify this piece of equipment:

Answer 3

Detorsion rod

Question 4

Identify this piece of equipment:

Answer 4

Krey hook

Question 5

What is the minimum acceptable semen morphology in a bull?

Answer 5

70%

Question 6

What is the minimum acceptable semen motility in a bull?

Answer 6

30%

Question 7

Under the bull BSE guidelines, to be a satisfactory potential breeder, a bull must pass all four parts of the examination. What are the four parts of the examination?

Answer 7

• Physical exam
• Min. scrotal circumference based on age
• Min. progressive motility of 30%
• Min. of 70% morphologically normal cells

Question 8

The fetus is first palpable at ______ days gestation

Answer 8

55-65 days

Question 9

What are the four cardinal signs of pregnancy?

Answer 9

1. Fetal membrane slip
2. Amniotic vesicle
3. Placentomes
4. Fetus

Must ID at least one positive sign of pregnancy

Question 10

What is the earliest sign of pregnancy?

Answer 10

membrane slip

Question 11

The primary releasing hormone of reproduction is:

Answer 11

GnRH

• Gonadotropin releasing hormone, produced by the hypothalamus.*
• Releases gonadotropins (FSH, LH, prolactin) from anterior pituitary*

Question 12

The major luteolytic hormone is:

Answer 12

prostaglandin F_2a (PGF_2a)

Causes the corpus luteum to stop functioning

Question 13

T/F: Progesterone induces luteolysis

Answer 13

False

Question 14

T/F: Progesterone induces luteolysis

Answer 14

False

Question 15

The key player in luteolysis is:

Answer 15

PGF_2a

Generally uterine endometrium is the source of PGF_2a in domestic animals

Question 16

What is the posture of this calf?

• Anterior, longitudinal
• Dorsosacral
• Front limbs extended, head retained

Answer 16

front limbs extended, head retained

Question 18

Identify this piece of equipment:

Answer 18

head snare

Question 19

The left limb of this calf is retained at the:

Answer 19

carpus

Question 20

Does this image show proper chain placement?

Answer 20

Yes

You want to make sure you place a loop above and a halfhitch below the fetlock joint. The connecting chain should be on the top of the leg

Question 21

Are these chains placed correctly?

Answer 21

No.

You want to make sure you place a loop above and a halfhitch below the fetlock joint. The connecting chain should be on the top of the leg​. (See image below)

Question 22

The process by which the fetus is restored to a deliverable fashion is called:

Answer 22

mutation

Question 23

What is the posture of this calf?

• Anterior, longitudinal
• Dorsosacral
• Front limbs extended, head retained

Answer 23

front limbs extended, head retained

Question 25

Identify this piece of equipment:

Answer 25

head snare

Question 26

The left limb of this calf is retained at the:

Answer 26

carpus

Question 27

Does this image show proper chain placement?

Answer 27

**Yes** ## Footnote *You want to make sure you place a loop above and a halfhitch below the fetlock joint. The connecting chain should be on the top of the leg*

Question 28

Are these chains placed correctly?

Answer 28

**No.** *You want to make sure you place a loop above and a halfhitch below the fetlock joint. The connecting chain should be on the top of the leg​. (See image below)*

Question 29

The process by which the fetus is restored to a deliverable fashion is called:

Answer 29

**mutation**

Question 30

Describe the **position** of this calf:

Answer 30

**dorsosacral** *Remember, position refers to the anatomic relationship of the dorsum of fetus relative to maternal pelvis*

Question 31

Describe the **presentation** of this calf:

Answer 31

**anterior** *Remember, presentation refers to the relationship of the spinal axis of the fetus to that of the dam (the portion of the fetus that is entering the birth canal - coming out at you)*

Question 32

Ferguson's reflex is when wedging of the fetus into the cervical canal stimulates __________ release

Answer 32

**oxytocin**

Question 33

The main driver for the onset of puberty in mammals is:

Answer 33

**ability of the hypothalamic neurons to produce sufficient GnRH**

Question 34

T/F: Lutalyse® only works during metestrus

Answer 34

**False** * Lutalyse® only works during _diestrus_.* * It works by lysing the CL. In metestrus (day 0-6), prostaglandin will have no effect. Diestrus (day 6-17) is the window when prostaglandin will have its effect because there is a CL.*

Question 35

The time period after calving in which a cow is not bred is called:

Answer 35

**voluntary waiting period (VWP)** *Typically 45-65 days (60 days), so uterus can involute again and repair and go back to normal size. Length is determined by physiology, economics, producers.*

Question 36

Identify this instrument:

Answer 36

**fetotome**

Question 37

What is the most common surgical approach for cesarean section in the cow?

Answer 37

**Standing Flank**

Question 38

T/F: Vaginal and uterine prolapses are hereditary

Answer 38

**FALSE** *Vaginal prolapses are hereditary; not uterine prolapses*

Question 39

With regard to BVD, what is the primary source of viral spread?

Answer 39

**Persistently infected (PI) calves** *consistently shedding high numbers of virus particles*

Question 40

What drug(s) is/are given to induce abortion at 150-240 days of gestation?

Answer 40

**corticosteroids and PGF** *25 mg Dexamethasone & 25 mg Lutalyse®* * *PGF acts to cause luteolysis (has no effect on placental P4 production)* * *Corticosteroids reduce placental P4 production (no effect on CL)*

Question 41

T/F: During a normal estrous cycle, uterine tone will begin to decrease a few days before the onset of estrus

Answer 41

**False** * During a normal estrous cycle, uterine tone will begin to _increase_ a few days before the onset of estrus​, becoming fully toned at estrus* * Tone will then decrease as the cow enters the luteal phase of her cycle*

Question 42

What is produced by this structure?

Answer 42

**progesterone** * *_Physiologic effects of Progesterone_* * *Negative feedback on Hypothalamus: Reduces basal GnRH amplitude and frequency, Prevents behavioral estrus, and Stops preovulatory LH surge* * *Negative feedback on Anterior pituitary*