Angela Shared "Cell Bio Repro Exam 3" - 19 Picmonics
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Cell Bio Repro Exam 3
Ovulatory Hormones I - Follicular Phase
Characteristics
0-14 Days
GnRH Stimulates FSH and LH
Follicle Secretes Estrogen
Negative Feedback from Estrogen
Increased Estrogen Leads to Positive Feedback
FSH and LH Surge
LH Spike Leads to Ovulation
2 mins
Ovulatory Hormones II - Luteal Phase
Days 15-28
Corpus Luteum
Secretes Progesterone
Negative Feedback inhibits FSH and LH
No pregnancy forms Corpus Albicans
Stops Estrogen Secretion
Endometrial Sloughing - Menses
GnRH secretion produces new follicular phase
2 mins
Oogenesis
Characteristics
Primary Oocytes From Birth
Meiosis I Once a Month
Secondary Oocyte Plus Polar Body
Frozen in Metaphase II, in Meiosis II
Ovulation
Fertilization by Sperm
Meiosis II
Ovum
Zygote Forms
2 mins
Testes
Characteristics
FSH Stimulates Sertoli Cells
Inhibin B Release
LH Stimulates Leydig Cells
Leydig Cells Secrete Testosterone
Testosterone Causes Male Development
2 mins
Spermatogenesis
Seminiferous Tubules
Sertoli Cells
Spermatogonia
Mitosis
Primary Spermatocyte
Meiosis I
Secondary Spermatocyte
Meiosis II
Spermatid
Spermatozoa
Acrosome
Flagellum
2 mins
Klinefelter's Syndrome
Pathophysiology
Male (XXY)
Signs and Symptoms
Eunuchoid Body Shape
Gynecomastia and Female Hair Distribution
Testicular Atrophy
Dysgenesis of Seminiferous Tubules
Possible Developmental Delay
Hypogonadism
Decreased Inhibin B
Increased FSH
Abnormal Leydig Cell Function
Decreased Testosterone
Increased LH
Increased Estrogen
Barr body (inactivated X chromosome)
6 mins
Turner Syndrome
Signs and Symptoms
Female (XO)
Short stature
Shield Chest
Cystic Hygroma (Webbing of Neck)
Lymphedema in Hands and Feet
Ovarian Dysgenesis
Streak Ovary
Decreased Estrogen
Increased FSH
Increased LH
Dysgerminoma
Bicuspid Aortic Valve
Preductal Coarctation of the Aorta
Horseshoe Kidney
Menopause before Menarche
Amenorrhea
5 mins
Androgen Insensitivity (Complete)
Defect in Androgen Receptor
Phenotypically Female
(46, XY)
Female External Genitalia
Rudimentary Vagina
Scant Sexual Hair
Testes Often in Labia Majora
Testes Surgically Removed to Prevent Malignancy
Increased Estrogen, Testosterone, and LH
Absent Uterus and Fallopian Tubes
3 mins
5 Alpha Reductase Deficiency
Autosomal Recessive
Inability to Convert Testosterone to DHT
Normal Internal Genitalia
Ambiguous External Genitalia until Puberty
Masculinization During Puberty with Growth of External Genitalia
LH can be Increased
Normal Estrogen, LH, and Testosterone levels
2 mins
Kallman Syndrome
Mutation in KAL-1 or FGFR-1 Gene
Failure of GnRH Secreting Neurons
Delayed Puberty
Anosmia
Hypogonadism
Infertility
2 mins
Placental Implantation Abnormalities
Mechanism
Placenta Adheres Directly to Myometrium
Placenta Accreta
Placenta Increta
Placenta Percreta
Caused by Scar Tissue
Hemorrhage
Diagnosis
Ultrasound is First-line, then MRI
Treatment
C-section Delivery
Artery Ligation or Embolization
2 mins
Abruptio Placentae
Mechanism
Premature Separation of Placenta
Assessment
Tearing Pain
Bleeding (Often Concealed)
Rigid Uterus
Contractions
Interventions
Corticosteroids as Needed
Emergent Delivery
Considerations
Increased Risks for Neonate
Rh (Rhesus) Incompatibilities
Increased Risk for Shock
Monitor Fetal Heart Rate
3 mins
Placenta Previa
Mechanism
Placenta Covers Cervical Os
Assessment
Painless
Bright Red Vaginal Bleeding
Interventions
Stable Fetus
Bed Rest
Observation
Unstable Fetus
C-section Delivery
Considerations
Risk for Shock
Magnesium Sulfate
Tocolysis
3 mins
Ectopic Pregnancy
Signs and Symptoms
Lower Abdominal Pain
Delayed Menses
Abnormal Vaginal Bleeding
Shock
Referred Shoulder Pain
Cullen Sign
Considerations
Methotrexate
Surgery
RhoGAM
2 mins
Gestational Hypertension
New-Onset Hypertension
> 20 Weeks Gestation
Risk Factors
Nulliparity
Obesity
African American Females
> 35 years Old
Multiple Gestations
Family History of Gestational HTN (or Preeclampsia)
Complications
IUGR
Prematurity
Abruptio Placentae
Management
Fetal Monitoring
Alpha-Methyldopa
Beta-Blockers (Labetalol)
Calcium Channel Blockers
Hydralazine
4 mins
Preeclampsia Assessment
After 20 Weeks of Pregnancy
Mild
Hypertension > 140/90
Proteinuria or End-Organ Dysfunction
Severe
Hypertension > 160/110
Progressive Renal Insufficiency
Vision Changes
HELLP Syndrome
Pulmonary Edema
2 mins
Severe Preeclampsia
Mechanism of Action
Vasospasm and Decreased Organ Perfusion
Intravascular Coagulation
Increased Permeability and Capillary Leakage
Signs and Symptoms
Hypertension
Proteinuria or End-Organ Dysfunction
HELLP Syndrome
Hepatic Dysfunction and Hemolysis
Elevated Liver Enzymes
Low Platelet Counts
3 mins
Eclampsia
Mechanism of Action
Increased Central Nervous System Irritability
Signs and Symptoms
Hyperreflexia
Positive Ankle Clonus
Headaches
Visual Disturbances
Epigastric or RUQ Pain
Seizures
Coma
Considerations
Don't Leave Bedside
Magnesium Sulfate
2 mins
Gestational Diabetes
Signs and Symptoms
Usually Asymptomatic
Fetal Macrosomia
Polyhydramnios
Diagnosis
Glucose Intolerance After 24 Weeks Gestation
3-hr 100g Glucose Tolerance Test
Treatment
Diet and Exercise
Close Glucose Monitoring
Insulin
Ultrasound (or Nonstress Test (NST))
Delivery
2 mins
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