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50 terms

PREGNANCY HORMONES II

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HCG
Human chorionic gonadotropin
Human Chorionic Gonadotropin
(HCG)
Peptide hormone secreted by placenta
Human Chorionic Gonadotropin
(HCG)
Stimulates estrogen and progesterone synthesis in corpus luteum of early pregnancy
Human Chorionic Gonadotropin
(HCG)
(Maintaining The Pregnancy) until placenta can take over- a few months
Human Chorionic Gonadotropin
(HCG)
Prevents involution of corpus luteum to maintain production of progesterone until placenta is formed
Human Chorionic Gonadotropin (HCG)
Secreted by chorion to maintain corpus luteum until about 4th month, when placenta produces enough progesterone and estrogen
HPL
Human Placental Lactogen (HPL) or (Human Chorionic Somatomammotropin)
Human Placental Lactogen (HPL) or (Human Chorionic Somatomammotropin)
Peptide hormone secreted by placenta
Human Placental Lactogen (HPL) or (Human Chorionic Somatomammotropin)
Stimulates metabolism of fat to provide maternal energy
Human Placental Lactogen (HPL) or (Human Chorionic Somatomammotropin)
Has growth hormone-like and prolactin-like actions during pregnancy
Human Placental Lactogen (HPL) or (Human Chorionic Somatomammotropin)
Antagonistic to insulin, promotes sodium retention
Placenta
Cells- chorion. Release the hormones as followed: 1. human chorionic gonadotropic hormone,
Produces
estrogen, progesterone, and relaxin.
Placenta
Formed from both fetal & maternal tissues
Placenta
The site of nutrients / waste exchange between embryo & mother
Placenta
Secretes progesterone from the 10th-12th week until term
Placenta
Functions as an endocrine organ (produces hormones)
Placenta
Produces HCG and progesterone and estrogen (hormones
Placenta Hormones
Human chorionic gonadotropin (HCG),
Human placental lactogen (HPL) or human chorionic somatomammotropin,
Estriol
Progesterone
(FSH)
Follicle-Stimulating Hormone
Follicle-Stimulating Hormone (FSH)
Initiates maturation of ovum, suppressed during pregnancy
Follicle-Stimulating Hormone (FSH)
Stimulates the development of primary follicles (oocytes).
Follicle-Stimulating Hormone (FSH)
Increases the number of follicular cells which in turn produce oestrogens
Follicle-Stimulating Hormone (FSH)
Produces follicular fluids
Follicle-Stimulating Hormone (FSH)
Develops the oocyte in the follicle
Prolactin
Inhibited by progesterone until maternal levels drop after delivery
Prolactin
Promotes milk synthesis and secretion
Prolactin
Secreted by anterior pituitary gland
Prolactin
Primary hormone of milk production, insulin antagonist
Prolactin
Stimulates milk production in postpartum mammala
Oxytocin
The love hormone
Oxytocin
Stimulates uterine contractions to initiate labor, stimulates milk-ejection reflex after birth, inhibited during pregnancy
Oxytocin
Stimulation of uterine contractions by positive feedback cycle
Oxytocin
Promotes milk ejection reflex and and contraction of myoepithelial cells
Oxytocin
Secreted by posterior pituitary gland
What is the primary function of Cortisol
Increase blood glucose
Cortisol
Increased during pregnancy, active in metabolism of glucose, protein, and fats
Estriol
Steroid hormone secreted by placenta
Luteinizing Hormone
Stimulates ovulation of mature ovum in nonpregnant state, suppressed in pregnancy
Aldosterone
Increased during pregnancy to conserve sodium and maintain fluid balance
Melanocyte-Stimulating Hormone
Increased during pregnancy, produces hyperpigmentation
Synergistic Hormones
Work together to perform the same action.
Example-
GLUCAGON, EPINEPHRINE, and CORTISOL- all raise blood glucose levels
Antagonistic Hormones
Humerol Control, two hormones that have opposite actions.
Example- INSULIN. GLUCAGON- decrease and increase blood glucose levels.
PTH and CALCITONIN- decrease and increase blood calcium levels
Corpus Luteum
Yellow endocrine tissue that forms in a ruptured Graafian follicle following the release of an ovum
Corpus Luteum Hormones
Estradiol, Progesterone
Ovaries
Located one on each side of the uterus in the female pelvis, functioning to secrete estrogen and progesterone
Ovulation
The expulsion of an ovum from the ovary (usually midway in the menstrual cycle)
Fallopian Tubes
Tubes which carry eggs from the ovaries to the uterus and which provides the place where fertilization occurs
Ovarian Follicles
Contain developing eggs and secrets ESTROGEN to prepare the uterine lining for fertilized egg implantment
Oocyte
A female gametocyte that develops into an ovum after two meiotic divisions
Fimbriae
Finger or fringe like projections