Development Flashcards
What is neurulation?
The process through which the neural tube is formed.
In neurulation, the _____ furrows and forms a _____ groove is surrounded by _____ _____. These migrate in to form the _____ _____.
- ectoderm
- neural
- neural folds
- neural tube
What are neural crest cells?
temporary cells derived from the ectoderm that appear in neurulation to give rise to neurons, glial cells, melanocytes, and the adrenal medulla.
What is the name of the structure in the neural tube that gives rise to the sensory neurons?
alar plate
What is the name of the structure in the neural tube that gives rise to the motor neurons?
basal plate
What is the psychological definition of a reflex?
a behavior that occurs automatically in response to a stimulus
What are primitive reflexes?
reflex actions originating in the central nervous system that are exhibited by normal infants, but not neurologically intact adults
Describe the rooting reflex.
the automatic turning of the head in the direction of a stimulus that touches a cheek
Describe the Moro reflex.
the abrupt movement of an infant’s head by flinging out their arms and slowly retracting them
Describe the Babinski reflex.
the automatic spreading out of the toes when an infant’s foot is touched
Describe the grasping reflex.
the automatic closing of the hand when an object is placed in an infant’s hand.
What is a gross motor skill? A fine motor skill?
- controlled movement of large muscles and limbs
- controlled movement of small muscles for delicate movement
Writing with a pen would be an example of what type of motor skill (gross/fine)?
fine
Describe stranger anxiety.
fear of unfamiliar individuals
Describe separation anxiety.
fear of being separated from a parental figure
