• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/48

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

48 Cards in this Set

  • Front
  • Back
Establishes a structural foundation for change along the longitudinal axis is the?
And when does it occur?
Primitive Streak, Week 3
Small area of proliferating cells are what at week 3?
Henson's node
What is the neural plate and when does it form?
the thickening that grows upwards to form the neural folds. 3 weeks
At 3 weeks, the strip of cells along the midline is ____ and this eventually becomes the _____
Notochord, primitive axial skeleton
When the disc becomes more of a tube/pear shape this helps form the ________
Neural Tube
The neural tube gives rise to what?
the entire CNS
The neural tube is actually formed when what happens?
the neural folds (formed by the neural plate) meet at midline and fuse together
After the neural tube, what is developed?
Somites
Name of blocks of tissue that resemble the vertebral column and they appear around what day?
Somites, 16th
The somite tissue becomes differentiated into 3 groups, what are they?
Sclerotome, Myotome, and Dermotome.
The innermost part of the somite, that eventually becomes the individual vertebrae, intervertebral discs and ribs
Sclerotome
What is lateral to the innermost part of the somite and describe it.
Myotome, becomes the musculature of the trunk
The most lateral part of the somite tissue is ____ and becomes the?
Dermatome, dermis
What begins at the end of the 3rd week and describe?
Flexion of the Embryo, rapid growth causes the embryo to buckle which results in a series of folds and then becomes a cylindrical shape
After the flexion of the embryo, the fold start to develop into what?
parts of the face
During the development of the face, the top fold is smooth and undifferentiated and forms:
the prosencephalon (forebrain)
The 1st groove in the fold that develop into parts of the face is the?
primitive mouth
the stomodeum is also the
oral groove or primitive mouth
Series of transverse elevations and depressions that grow and meet together at midline are
the branchial arches
How many branchial arches are there?
6 formed
How many branchial arches are visible?
4 externally
The 1st branchial arch is also called the
mandibular arch
the 1st branchial arch forms
lower lip, muscles for mastication, mandible, anterior portion of the tongue, and some structures of the middle ear
The 2nd branchial arch is also called what and forms what?
Hyoid Arch, UPPER body and LESSER horns of the hyoid bone, stapes, muscles of facial expression
The third branchial arch forms?
LOWER body of the hyoid, posterior portion of the tongue
The Fourth and Fifth arches form?
cricoid and arytenoid cartilages of the layrnx, cartilages of the trachea
The 6th or caudal arch forms?
palatine muscles and pharyngeal constrictors.
The development of:
nasal (olefactory) placodes happens at what week
Week 4
The development of the nasal pits within the medial and lateral nasal process will form when?
week 4
The hyoid arches form at what week?
week 4
the arm and leg buds begin to form when?
week 4
the otic pit is now formed at week
week 4
the umbilical cord is now formed at
week 4
What is formed in week 4?
nasal (olfactory) placodes, nasal pits, hyoid arches, arm and leg buds, otic pit, and umbilical cord
What is formed at week 5?
Face (frontonasal process, maxillary process, mandibular arch and hyoid arch), heart beats, respiratory system begins
A heart beat can be heard at
week 5
the respiratory system begins development at week ___
5
The Face (frontonasal process, maxillary process, mandibular arch and hyoid arch) is formed at week
5
Week 6, what is formed
-primary palate
-nasal laminae, septum
-tongue
-fingers appear at the end of the week
-elbows and knees are evident
-mouth and eyes are developing
At week 6 the nasal septum is formed from the fusion of the
nasal laminae
at week 6, the nasal laminae is?
2 plates formed by the fusion of the maxillary and medial nasal processes
at week 6 the primary palate is
a shelf formed by the fusion of the maxillary and medial nasal processes
at week 6, the eyes
are developing and drawn somewhat anteriorly
the mouth, at week 6 is
developing at the superior border of the mandibular arch
at weeks 6, the ears are appear by
looking like 6 small elevations or hillocks
At week 7 what happens
the nasal area narrows, the eyes move more anterior of the face, tooth buds develop, organs are essentially complete, but grow.
the length is around 30 mm, limbs figers and toes begin to elongate
An important time for the development of the palate is
7 weeks
At week 8, the baby has
all the parts and it needs to grow, now is in the fetal development stage.