Pregnancy & Development Flashcards
During the acrosomal reaction, the __________is/are removed from the oocyte.
corona radiata
zona pellucida
acrosome
cilia
corona radiata
zona pellucida
Which of the following happen during the cortical reaction?
sperm receptors are destroyed
Ca2+ is released, which attracts water to the egg
sperm receptors are not destroyed
Ca2+ is not released
sperm receptors are destroyed
Ca2+ is released, which attracts water to the egg
A hollow ball of cells:
blastula
A solid ball of cells:
morula
The trophoblast develops into the:
chorion
The inner cell mass develops into the:
embryo
Roughly how many days after fertilization does implantation generally occur?
7
Where does fertilization normally occur?
Ampulla of the fallopian tube
Where would ectopic pregnancies most likely occur?
The fallopian tube
match the following adult tissues to the embryonic layer from which they arose:
Epidermis of the skin: [a]
Central Nervous System: [b]
a. ectoderm
b. ectoderm
match the following adult tissues to the embryonic layer from which they arose:
Muscles: [c]
Bones: [d]
c. mesoderm
d. mesoderm
match the following adult tissues to the embryonic layer from which they arose:
Epithelium of the GI tract: [e]
e. endoderm
Which of the following would be portions of the endometrium?
Amnion Chorion Yolk sac Deciduas capsularis Deciduas basalis
Deciduas capsularis
Deciduas basalis
Which of the following are embryonic tissues:
Amnion Chorion Yolk sac Deciduas capsularis Deciduas basalis
Amnion
Chorion
Yolk sac
A pregnancy test actually detects which hormone in the urine?
hCG
Which hormone triggers the letdown reflex during breastfeeding?
Oxytocin
Which hormone stimulates breast milk production?
Prolactin
A genetic male zygote has [a] sex chromosomes, and a genetic female [b]
a. XY
b. XX
- What is the (cardiac) foramen ovale? what function does it serve in fetal
circulation?
it is a ____ between the __ and __ atrium
a hole between the R and L atrium of fetal heart.
- What is the (cardiac) foramen ovale? what function does it serve in fetal
circulation?
allows for oxygen ___ blood to ___ the ____ circuit. (why is that relevant?)
allows for oxygen RICH blood to SKIP the PULMONARY circuit. Fetuses don’t actually breathe until they are born therefore their lungs don’t require the oxygen to breathe, only a sufficient amount to keep the lung tissues alive
- What is the (cardiac) foramen ovale? what function does it serve in fetal
circulation?
so that instead, the oxygenated blood can enter the __ side of the heart to be pumped out of the ___
so that instead, the oxygenated blood can enter the LEFT side of the heart to be pumped out of the AORTA
- What is the (cardiac) foramen ovale? what function does it serve in fetal
circulation?
The ___ ___ (connects pulmonary artery and the aorta) and the foramen ovale allow blood to short circuit the pathway and send the oxygenated blood to the rest of the body.
DUCTUS ARTERIOSIS
The notochord can signal to overlying _______________ tissue to invaginate and form the neural tube
during embryonic development.
Ectoderm
How many sperm will normally undergo the acrosomal reaction during fertilization?
hundreds or thousands
Which vessel(s) carries oxygen-rich blood to the fetus?
The umbilical vein
What is the function of the acrosome on a sperm?
Digest the Zona Pellucida/Corona Radiata
Formed after cleavage divisions, a hollow ball of cells is known as a:
Blastula
What happens to sperm cells that are not ejaculated?
they are broken down into small molecules & reabsorbed in the reproductive tract
They enter the peritoneal cavity
They break down and release inflammatory molecules, leading to pain
they are broken down into small molecules & reabsorbed in the reproductive tract
In the gonads, the [a] cells produce testosterone and [b] cells produce estrogen.
a. Leydig
b. Follicular
What is the name for the portion of the endometrium that is shed during menses?
stratum functionalis
Which hormone would most likely depress (lower) appetite?
Leptin
