Final Flashcards

1
Q

PGF2a

A

Must be cyclin and sensitive

5d-18d ➡️ regress CL ➡️✳️heat

Lutalyse, estrumate, estroplan, prostamate

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2
Q

P4

A

Pro-gestation: prep uterus

⛔️ov

Use implant/feed: removal ➡️✳️heat

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3
Q

Two shot method

A
  1. GnRH➡️ sync new dev fol wave
  2. PGF2a➡️kill CL
  3. GnRH ➡️ LH surge

30h ov & AI

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4
Q

7d cosync + CIDR

A
  1. GnRH + CIDR for 7d
  2. Remove CIDR + PG hit
    66h GnRH + AI
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5
Q

Maternal recog

A

Hu: uterus➡️ hCG
Pig: embryo➡️E2:⛔️PGF2a
Ewe: embryo➡️IFN-T: ⛔️E2-R ⬇️OTr
Eq: unk small peptide

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6
Q

Placental attach

A

Mare + pig: diffue

Ru: cotyledonary

Hu: discoid

Cat+dog: zonary

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7
Q

Ejac➡️1st cleavage div

A

ICUOCBZF
BRBBR

Mucous Retrograde & neutrophils
Cervical crypts 
Uterus: trap in ut gl;  ❇️capi 
Uterotubal jct
Oviduct: complete capacitation
Isthmus❇️hyperactivity
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8
Q

Sperm capacitation

A

Removal of seminal fl + cholesterol protein coat ➡️ release binding from oviduct epi

Isthmus completes capi➡️✳️hyperactive sperm

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9
Q

Cumulus expansion

A

LH surge➡️❇️cum expansion
Change gap jct bw cells
Hyaluridonase-hyaluronic acid➡️ breaks down gap jct ➡️ penetration & fertilization

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10
Q

Sperm attach ZP

A

ZP3 binds Zona Binding Region➡️ ❇️acrosomal rxn ➡️ fuse PM + OAM
➡️Leak enz to break down ZP + enter perivit space

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11
Q

Sperm ova fuse

A

IZUMO on eq seg of sperm binds JUNO on ova PM➡️✳️fuse➡️ zona rxn + viti block ➡️ rel cortical gran + remove JUNO

  1. Complete meiosis I➡️2nd PB
  2. Cortical granules

Engulf➡️ decondense dna ➡️ pronuclei ➡️ duplicate & divide

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12
Q

⛔️polyspermy

Req fuse eq seg + PM

A

Zona rxn: slow➡️harden ZP +⬇️JUNO

Vit block: fast➡️ Ca2+ spikes:✳️cortical gran rel

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13
Q

Fl ➡️ blastocyst

A

Compaction: Morula forms tight jct
NaK pump on basal mem: Na in

H2O follows in & sep ICM with gap jct from trophoblast tight jct

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14
Q

Hatching

A
  1. Growth & fl in
  2. Trophoblast Enz production
  3. Blastocyst expand & collapse
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15
Q

Gestation days

A
Cattle: 285
Sheep: 149
Pig: 114
Mare: 340
Rat: 21
Dog: 65
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