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WorksheetsDR. JONES ENDO EXAM 3
Total questions: 57
Worksheet time: 2hrs 54mins
Which of the following statements is true regarding the corpus luteum?
The corpus luteum is derived from the corpus albican
Both granulosa lutein cells and Leydig cells are present
Cells within the corpus luteum express a high number of LH receptors
It produces only one class of steroid, progestins
In humans, fertilization usually occurs in the
Vagina
Cervix
Uterine cavity
Uterine tubes
Inhibition of luteinizing hormone secretion would inhibit testosterone synthesis
True
False
Progesterone is secreted primarily from the corpus luteum
True
False
The human female determines the sex of her offspring
True
False
Deletion of the SRY gene would cause male fetuses to develop as females
True
False
Dihydrotestosterone is produced by the action of the enzyme 5 alpha-reductase on testosterone.
True
False
The rate at which GnRH is secreted from the hypothalamus determines whether LH or FSH is secreted from the anterior pituitary
True
False
Inhibin prevents release of LH from the anterior pituitary
True
False
Sertoli cells are stimulated by __________, while Leydig cells are stimulated by ________.
FSH, LH
LH, FSH
TESTOSTERONE, LH
FSH, TESTOSTERONE
Secretion of LH is inhibited by
high concentrations of inhibin.
rapidly rising concentrations of estradiol.
high concentrations of testosterone.
decreasing concentrations of progesterone.
A follicle that does not complete development as a graafian follicle will
rest until the next month.
continue meiosis.
become a primordial follicle.
undergo follicle atresia
What is it called when a mature follicle ruptures and ejects the oocyte into the uterine tube?
gestation
menstruation
ovulation
fertilization
What hormone triggers ovulation?
LH
FSHC
progesterone
hCG
The ___________ phase of the endometrium is supported when the ovary is in the luteal phase.
proliferative
secretory
menstrual
ovulatory
In the female menstrual cycle
ovulation is stimulated by decreasing concentrations of progesterone.
menstruation occurs during the last four days of the cycle.
progesterone secretion is stimulated by LH.
the luteal phase is characterized by high circulating concentrations of estrogens.
What is the major hormone produced during the luteal phase?
progesterone
estrogen
androgen
hCG
The LH surge is caused by a ______ feedback effect of increased estradiol.
positive
negative
High progesterone levels during the luteal phase
causes cervical mucus to thicken.
suppresses FSH and LH.
causes thickening of the endometrium.
The secretion of gonadotropins (FSH and LH) will ___________ during menopause.
increase
decrease
remain the same
During which day of the female cycle are estrodiol levels higher and higher than progesterone levels?
17
11
0
23
Which cells of the female gonad are most responsive to FSH (follicle stimulating hormone)?
Granulosa
Leydig
Theca
Sertoli
Anterior pituitary hormone which primarly regulates granulosa cells
Follicle stimulating hormone (FSH)
Luteinizing Hormone
GnRH
Estrogen
Stimulates the theca cells
Luteinizing hormone (LH)
GnRH
Estrogen
Progesterone
Stimulates the release of LH during the beginning of the follicular phase of the ovarian cycle
GnRH
Estrogen
Progesterone
INhibin
Causes the proliferative phase of the mesntrual cycle
Estrogen
Progesteron
INhibin
GnRH
Decrease uterine contractions
Progesterone
Inhibin
Estrogen
LH
Hormone which specifically inhibits FSH release
Inhibin
Follicle stimulating hormone (FSH)
Estrogen
Progesterone
In which part does fertilization occurs?
A
B
C
D
Which part is the cervix?
A
B
C
D
Which part is the myometrium?
A
B
C
D
Which part is the Granulosa cells?
A
B
C
D
female gonads, produce eggs much less and infrequent then males
Ovaries
uterine tubes
vagina
uterus
flares at infundibulum, wall contains smooth muscle and cilia to move eggs along
Fallopian tubes
ovaries
vagina
cervix
receptacle for penis, squamous epithelial cells after puberty, distensible
vagina
cervix
fallopian tubes
uterus
thick smooth muscle chamber
• Harbor and provide nutrition for developing fetus
• Fundus (superior), Body , Cervix (inferior) – regions
Uterus
fallopian tubes
cervix
ovaries
bundles of smooth muscle fibers, produce labor contractions and expel fetus
Myometrium
Endometrium
Inner lining of uterus, epithelium
Myometrium
Endometrium
secrete androgens/estrogen
Theca
Granulosa
Follicular fluid
make estrogens from androgens, secretes inhibin
Granulosa
Theca
Follicular fluid
Pap smear are cells of the cervix are scraped and assayed for dysplasia
True
False
Human Papilloma Virus (HPV) is sexually transmitted pathogen causes cervical cancer and genital warts, men and women
True
False
The Gardasil vaccine protects against ____ different types of viruses and the Cervaix vaccine protects against ____ different types of viruses.
4 , 2
2 , 4
3 , 4
4 , 1
GnRH leads to estrogen release from ovary in :
Puberty
Adulthood
Which of the following is true about estrogen?
Stimulates growth of the follicle
External genitalia growth and feminization
Duct growth in the breast
Stimulates bone growth, and growth plate closure
Increases salt and water retention (Angiotensiogen)
Which of the following is true about progesterone?
Stimulates breast development: lobules and alveoli
Prepares uterus for implantation
Cervical mucous secretions
Decreases myometrium contractions
Increases body temperature
extends from menstruation to ovulation (days 1-14)
Follicular phase
Luteal phase
phase between 15-28 days.
Luteal phase
Follicular phase
Phase between 5-15 days.
1.Estrogens from follicle stimulate growth of blood vessels and muscle layer
2.Expression of progesterone receptors on endometrial cells increases
3.Increased thickness of uterine wall
Proliferative phase
Secretory phase
Menstrual phase
Phase between 15-28 days, after ovulation.
1.Secretion of glycogen by endometrial glands due to progesterone stimulation
2.Increased thickness further
3.High nutrition if fertilization occurs
Proliferative phase
Secretory phase
Menstrual phase
Phase between 1-5 days.
1.Discharge of menstrual fluid
2.Degeneration of endometrial lining due to loss of hormones from the corpus luteum
3.Ischemia (loss of blood vessels)
Menstrual phase
Secretory phase
Proliferative phase
Prolactin injections may be used to induce labor
True
False
What is the function of prolactin in females?
stimulates milk production in the mammary glands
regulates the gonadotropins
Regulates water and electrolyte balance in the kindey
Where is oxytocin produced?
Hypothalamus
pineal gland
anterior pituitary gland
posterior pituitary gland
Which of the following are true about Human Chorionic gonadotropin (hCG)?
Secreted by blastocyst and placenta
Growth of corpus luteum – keep hormones coming!
Secreted by corpus luteum
Stimulates growth of uterine wall and mammary ducts
Which of the following are true about estrogen?
Secreted by corpus luteum
Stimulates growth of uterine wall and mammary ducts
Suppresses FSH and LH release
Secreted by the placenta and corpus luteum
Which of the following are true about progesterone?
•Secreted by the placenta and corpus luteum
•Suppresses uterine contractions
•Growth of decidual cells (nutrition for placenta)
•Suppresses LH and FSH release
•Stimulates growth of uterine wall and mammary ducts
