Unit 2: Chapter 3-4 in the Experiencing the Lifespan: Fourth Edition Textbook by Janet Belsky Exam Study Guide.
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Life Span
Unit 2: Chapter 3-4 in the Experiencing the
Lifespan: Fourth Edition Textbook by Janet
Belsky Exam Study Guide.
myelination - answerFormation of a fatty layer encasing the axons of neurons. This process,
which speed the transmission of neural impulses, continues from birth to early childhood.
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Unit 2: Chapter 3-4 in the Experiencing the
Lifespan: Fourth Edition Textbook by Janet
Belsky Exam Study Guide.
myelination - answer✔Formation of a fatty layer encasing the axons of neurons. This process,
which speed the transmission of neural impulses, continues from birth to early childhood.
synaptogenesis - answer✔Forming of connections between neurons at the synapses. This
process, responsible fit all perceptions, actions, and thoughts, is most intense during infancy and
childhood but continues throughout life.
dendrite - answer✔A branching fiber that recieves information and conducts impulses toward
the cell body of a neuron.
axon - answer✔A long nerve fiber that usually conducts impulses away from the cell body of a
neuron.
mylin sheath - answer✔****The myelin sheath is the lubricant that premits the neural impulses
to speedily flow. This insulating layer may also determine whether cells thrive.
brain plasticity - answer✔***Brain plasticity highlights the basic nature-combines-with-nurture
principle that governs human life.--- plastic- Malleable, or capable of being changed (used to
refer neural or cognitive development).
Compare a 1 year old's visual cortex to a 10 year old's visual cortex. - answer✔***by the
middle of the fetal period the cells that compose the brain have migrated to the top of the neural
tube,. During the final months of pregnancy, and the first year of life, they differentiate into their
mature form. In the visual cortex, the part of the brain responsible for interpreting visual stimuli;
the axons are mylinated by age 1. Visual capabilities develop rapidly during the first year of life.
But we wont need the skills to compose symphonies, do higher math, or completely make our
way around the world until we become adults. Neural loss is critical to development tool.
Following a phase of lavishly producing synapses, each cortical region undergoes synaptic
pruning and neural death. This shedding timetable also reflects our expanding abilities. It begins
at age 1 in the visual cortex. It starts during late childhood in the frontal lobes.
automatic reflex - answer✔reflex- A response or action that is automatic and programmed by
noncortical brain centers. (sucking reflex, rooting reflex, and grasping)
When do newborn reflexes develop? - answer✔after they exit the womb, present at birth
When do newborn reflexes disappear? - answer✔as the cortex grow. gradually dissapears after
the first few month sof life. by month four or five babies ni longer suck continually.
What is the correct developmental sequence for infant eating? - answer✔newborns are born
with sucking reflex and rooting reflex. --- sucking reflex- The automatic, spontaneous sucking
movements newborns produce, especially when anything touches their lips. ------ rooting reflex-
Newborns' auromatic response to a touch on the cheek, involving turning toward that location
and beginning to suck.----- sucking, everything in the mouth, food pickiness
picky eater - answer✔
food insecurity:
- What is it?
- How many families in the US with childeren are affected by it? - answer✔-food insecurity-
According to the U.S. Department of Agriculture surveys, the number of households that report
needing to serve unbalanced meals, worrying about not having enough food at the end of the
month , or having to go hungry due to lack of money ( latter is severe food insecurity). ---
According to th U.S. Department of Agriculture, in 2012 roughly one in six households with
childeren was designated as food insecure.
food stamps - answer✔Food Stamp Program (Now called SNAP, Supplemental Nutrition
Assistance Program): This mainstay federal nurtition program provides electronic cards that
participants ise like a debit card to buy food. To qualify, a family must have no more than $2,000
in resources, such as a bank account, or $3,250 in resources if one person is disabled or age 60
and over. Families with young childeren make up the majority of food stamp recipients.
collic
- what causes that? - answer✔Colic- A baby's frantic, continual crying during the first three
months of life; caused by an immature nervous system.
What is the best way to sooth a newborn infant? - answer✔kangaroo care- Carrying a young
baby in a sling close to the caregiver's body. This technique is most useful for soothing an infant.
****Animal studies suggest that you can do things to insolate protect that will help your infant
ddeal with long term stress. - answer✔
What do we know about the wake/sleep cycle of a newborn? - answer✔Full-term newborn
babies typically sleep for 18 hours out of a 24 hour day. newborns are in the sleepy/drowsy phase
about 90% of the time. The chart 3.4 shows Infants are: 3%- Nonalert awake; 3%- Fussing,
crying; 7%- Alert awake; 7%- Drowsiness, sleep-wake transition; 7%- Alert awake; 30%- Quiet
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