week one Flashcards
Describe the sperm pathway
Testes → epididymis → ductus deferens → ejaculatory ducts →prostatic ducts → prostatic urethra→ urethra → out
How is the male pelvis different from the female pelvis?
It is more heart shaped and much smaller
What are the seminiferous tubules responsible for?
Spermatogenesis
What is the function of germ cells?
Differentiate to produce spermatocytes from onset of puberty
What is the function of sertoli cells?
Larger cells that support, ature, and protects, sperm generation, secretes activin and inhibin
What is the function of leydig cells?
Secrete testosterone
Where are the germ cells, sertoli cells, leydig cells found?
Seminiferous tubules
How many spermatids are produced during spermatogenesis?
4
How many chromosomes does each sperm contain?
23
How long does each sperm take to mature?
72 days
Where do sperm mature?
Epididymis
What is the structure of mature sperm?
Head: chromosomes
Midpiece: mitochondria and ATP
Tail: movement
Where are mature sperm stored?
Tail of Epididymis
Where is cancer most commonly found in the prostate?
Peripheral zone
What does the bulbourethral gland secrete?
Pre-Seminal fluid
What do the seminal vesicles secrete?
Viscous whitish-yellow fluid containing fructose and prostaglandins
In males what does FSH stimulate?
Spermatogenesis
In males what does LH stimulate?
Stimulates production of testosterone via leydig cells
What does testosterone do?
Stimulates the development of male secondary sex characterits and spermatogensisi
What layer of the endometrium is shed during menses?
Functional layer
When is LH highest? When is FSH highest?
Both before ovulation, around day 11
What hormone is highest during the follicular phase/during menses?
Estrogen
What hormone is highest during the luteal phase/secretory phase?
Progesterone
When is the endometrial lining the thickest?
During luteal phase, around day 28
When is the endometrial lining the thinnest?
Around day 7
When is basal body temperature lowest?
Around day 14
When is basal body temperature highest?
Day 16-26
Around ovulation
Ovarian cycle developmental steps
Primary follicle → theca → antrum → ovulation → corpus luteum forms → mature corpus luteum → corpus albicans
When is inhibin the highest?
Luteal phase, day 21, secretory phase
What is released from corpus luteum?
Progesterone, hCG
What is the impact of alcohol on a fetus?
Birth defects, fetal alcohol syndrome, and fetal alcohol effect
What teratogenic effect do androgens have?
Masculinization of external genitalia of a genotypically female fetus
What teratogenic effect do progestins have?
Hypospadias (urethral opening on underside of penis) in the male and heart defects
What teratogenic effect does diethylstilbestrol (DES) have?
Inc vaginal/cervical cancers in women
Inc in genital tract anomalies in males
What teratogenic effect do antibiotics have?
Tetracycline: crosses placenta and deposits in embryonic bones and teeth; causes mottling of teeth in third trimester and dec bone growth in long bones
Antituberculosis antibiotics may cause deafness
What teratogenic effect does vitamin A (and retinoic acid derivatives) have?
Abortion and birth defects; esp in 5-7th week gestation
What infections are teratogenic?
Toxoplasmosis
Other: HIV, Varicella-zoster, Syphilis, parvovirus, Epsine-Barr
Rubella
Cytomegalovirus
Herpes simplex
Radiation effect on pregnancy?
Developmental delays at 10-18 weeks
What are the parts of the male genital exam?
Inspection
Palpation (inguinal lymph, penis, scrotum and testes)
Inguinal hernia check
Prostate exam (maybe)
What does the horizontal chain of inguinal nodes drain?
Drains external genitalia (except testes), anal canal, gluteal area
What does the vertical chain of inguinal nodes drain?
Drains upper thigh
Explain what a direct hernia is
Tissue herniates behind external ring from the abdominal wall
Explain what a indirect hernia is
Tissue herniates through the inguinal canal
What lab tests are used when focusing on male reproductive concerns?
Testosterone
PSA
Urinalysis
Urine culture and sensitivity
GC/CT NAAT urine
Syphilis serum
HIV serum or finger stick
Hepatitis B, C serum
What imaging is used for male reproductive health concerns?
Ultrasound
Color doppler
Pelvic CT
Uroflowmetry
Tissue biopsy
At what age can an adolescent have confidentiality? At what age can they make a medical decision such as getting a vaccine without parent knowledge/consent?
Confidentiality: 10
Med decision: 15
What are the components of the Breast Cancer Risk Assessment Tool? At what age do you start?
Current age
Race
Age of menarche
Age of first live birth
Number of 1st degree relatives w breast cancer
Number of previous biopsies
Whether any breast biopsy has shown atypical hyperplasia
Women 35+
What is average blood loss during a period?
30 mL avg (13-80mL)
What are the 8 P’s to ask during sexual history?
Preferences (pronouns)
Partners (what type, how many)
Practices (oral, anal, vaginal, sex toys)
Protection from STIs
Prevention of pregnancy
Pleasure
Partner violence
When do you start screening for diabetes and lipids?
DM: 45, q3 years
Lipids: 20, q5 years
Components of the gynecological exam
CBE/Chest exam
External genital exam
Speculum exam
Bimanual exam
Rectal-vaginal exam (over 40 or with suspicion of endometriosis or CA)
Of the most common STDs, how many and which ones are curable?
4; syphilis, gonorrhea, chlamydia, trichomoniasis
Of the most common STDs, how many and which ones are NOT curable?
4; the viral infections; hep B, HSV, HPV, HIV