implantation Flashcards
occurs in the endometrium of the anterior or posterior wall of the body near the fundus on the 6th day which corresponds to the 20th day of
regular menstrual cycle.
Implantation
implantation is also called as
nidation or nesting
WHERE does implantation ocur
endometrium near the fundus
four stages of implantation
Apposition
Adhesion
Penetration
Invasion
ON WHAT DAY does implantation occur
on the 6th day which is the 20th day of
regular menstrual cycle.
stage that prepares for penetration; finds
the right position
Apposition
stage for sticking
Adhesion
stage for invading
Penetration
stage for entry to wall of the uterus
Invasion
WHAT DAY is the implantation process COMPLETED
10th or 11th day.
This type of deeper penetration of human blastocyst is called
IMPLANTATION.
This type of ______ of human blastocyst is called IMPLANTATION.
deeper penetration
day where primitive streak can be seen on the LEFT SIDE of this.
Day 15
what is primitive streak
starting point
day where the primitive streak can still be seen, and the opposite end of the embryo is starting to FOLD UP
Day 17
day where the neural tube is seen along with SOMITES ON EITHER SIDE of it
Day 19
t/f
the neural tube SHOULD NOT CLOSE
f
the neural tube SHOULD CLOSE
t/f
if it doesn’t close, GLYCOLIC acid is needed to prevent this
f
FOLIC acid is needed
TERM when NEURAL TUBE DOES NOT CLOSE and folic acid is needed to prevent this
neural tube defect
ZIPPER-LIKE MOTION of the neural tube closing
together
Somites
Somites’ motion
- zipper-like
HOW MANY PAIRS OF SMALL BUMPS form on either side of the neural tube closure
three pairs
somites will form the _____ and the ______.
skeleton, major muscles of the body,
HOW MANY PAIRS OF SOMITES will line the neural tube within 2 weeks.
38 pairs
38 pairs of somites will line the neural tube within HOW MANY WEEKS
2 weeks
DAY where skeletons are present.
DAY 22 and DAY 24
WEEK where the cluster of cells
attaches to the womb it is called
an embryo.
4 WEEKS EMBRYO
How is an embryo formed
After the cluster of cells attaches to the womb
The embryo is between _____ and _____ inch long at 4 weeks
1/100, 4/100
The embryo is between 1/100 and 4/100 inch long at how many weeks
4 weeks
The embryo is about _____ long at 8 weeks
½ inch
The heart now has four chambers at how many weeks
8 weeks
Fingers and toes begin to form at what week
8 weeks
Reflex activities begin as the brain and nervous system develop at what week
8 weeks
Cells begin to form the eyes, ears, jaws, lungs,
stomach, intestines and liver at this week
8th week
Cells begin to form the ____, ____, ____, ____,
____, ____ and ____.
eyes, ears, jaws, lungs, stomach, intestines, liver
The embryo is about _____ inches long (the head is about half the length) and weighs less than ____ ounce at week 10
1 to 1¼, ½
The embryo is about 1 to 1¼ inches long (the head is about half the length) and weighs less than ½ ounce at week 10
the head is about half the length at what week
week 10
The beginnings of ALL KEY BODY PARTS ARE PRESENT BUT NOT COMPLETED at what week
10 week
Structures that will form eyes, ears, arms and legs can be seen at what week
10 week
Structures that will form ______, ______, ______ and ______ can be seen at week 10
eyes, ears, arms, legs
Muscles and skeletons are developing and the nervous system becomes more responsive at what week
week 10
____ and ____ are developing and the _____ becomes more responsive at week 10
Muscles, skeletons, nervous system
The fetus is about ____ inches long and weighs about ____ ounce at week 12
2½, ½
The fetus is about 2½ inches long and weighs about ½ ounce at what week
week 12
Fingers and toes are distinct and have nails at what week
week 12
Hair begins to develop, but won’t be seen until later in the pregnancy at what week
week 12
The fetus begins small, random movements, too
slight to be felt at what week
week 12
The fetal heartbeat can be detected with a heart
monitor at what week
week 12
All major external body features have appeared at what week
week 12
Muscles continue to develop at what week
week 12
The fetus is about 3½ inches long and weighs about 1½ ounces at what week
week 14
The fetus is about _____ inches long and weighs about _____ ounces at week 14
3½, 1½
The fetus begins to swallow, the kidneys make urine, and blood begins to form in the bone marrow at what week
week 14
Joints and muscles allow full body movement at what week
week 14
There are eyelids and the nose is developing a bridge at what week
week 14
External genitals are developing at what week
week 14
The fetus is about 5½ inches long and weighs about 7 ounces at what week
week 18
The fetus is about ___ inches long and weighs about ___ ounces at what week
5½, 7
The skin is pink and transparent and the ears are clearly visible at what week
week 18
All the body and facial features are now recognizable at what week
week 18
The fetus can grasp and move its mouth and nails begin to grow at what week
week 18
The fetus has begun to kick and some women feel this movement at what week
week 18
The fetus is about 6¼ inches long and weighs about 11½ ounces at what week
week 20
The fetus is about _____ inches long and weighs about _____ ounces at week 20
6¼, 11½
All organs and structures are formed at what week
week 20
Skin is wrinkled and pink to reddish in color - thin and close to the blood vessels at what week
week 20
Protective skin coating, (VERNIX) begins to develop at what week
week 20
Respiratory movements occur - lungs have not
developed enough to permit survival outside the
uterus at what week
week 20
By this time, mothers usually feel the fetus moving at what week
week 20
At this time, what can often identify the sex of the fetus.
ultrasound
The fetus is about _____ inches long and weighs about ____ pound at week 22
7 1/2, 1
The fetus is about 7½ inches long and weighs about 1 pound at what week
week 22
It has fingerprints and some head and body hair at what week
week 22
It may suck its thumb and is more active and what week
week 22
The brain is growing very rapidly, the fetal heartbeat can be easily heard, and the kidneys start to work at what week
week 22
Approximately 31% of babies born survive and Babies born at this age require intensive care
and usually have lifelong disabilities and
chronic health conditions at what week
week 23
The fetus is about ____ inches long and weighs about ____ pounds at week 24
8 1/2, 1 1/4
The fetus is about 8¼ inches long and weighs about 1¼ pounds at what week
week 24
Bones of the ears harden making
sound conduction possible. The fetus
hears the mother’s sounds such as
breathing, heartbeat and voice at what week
week 24
The first layers of fat are beginning
to form at what week
week 24
This is the beginning of substantial
weight gain for the fetus and Lungs continue developing at what week
week 24
