Explain each of the major post-natal brain developments of myelination, transient exuberance and selective pruning. Give several milestones in the development of specific gross and fine motor skills. How do these relate to brain developments?

-Myelination: most increased brain weight occurs because of myelination. Myelin is a white fatty coating on the axons that speeds signals between neurons. The effects of myelination are especially apparent in early childhood because the areas of the brain that show the greatest early myelination are the motor and sensory areas. Everything is done more slowly by 6 year olds than by 16 year olds because the younger children’s brains have less myelination, which slows information processing. -Transient exuberance: an estimated fivefold increase in dendrites in the cortex occurs in the 24 months after birth with about 100 trillion synapses being present at age 2. This early dendrite growth is called transient exuberance: exuberant because it is so rapid and transient because some of it is temporary. -Selective pruning: when unused connections atrophy and die, just as a gardener might prune a rose bush by cutting away parts to enable more, or more beautiful, roses to bloom. -Gross motor skills: are physical abilities involving large body movements, such as walking and jumping. milestones: 5 months they can use their arms and legs to belly crawl, crawling by 8 months -Fine motor skills: physical abilities involving small body movements, especially of the hands and fingers, such as drawing and picking up a coin. grasp reflex. milestones: rotate objects at 2 months, 4 months is when they start to grab, but timing is kind of off, palmer grasp around 5 months and pincer grasp at 12 months. How do these relate to brain developments? Sensory and motor cortex develops the most. More test answers on https://studyhippo.com/dev-psych-essay-questions-test-2/

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What is Gross And Fine Motor Skills?

Gross and fine motor skills are two separate but related skill sets. Gross motor skills involve the use of large muscle groups to perform physical activities such as running, jumping, hopping, skipping and throwing. Fine motor skills involve the use of smaller muscles in the hands and fingers to complete tasks such as writing, drawing, buttoning a shirt or tying shoelaces. Both types of skills are important for a child’s development and can impact their overall success in school and life.Gross motor skills require coordination between different body parts as well as balance and strength. These activities help children build physical strength, flexibility and coordination which can improve their posture, body awareness, agility and endurance. Examples of gross motor activities include riding a bike or scooter, climbing stairs or playing sports like soccer or basketball. Fine motor skills require precise hand-eye coordination that is used in everyday activities such as getting dressed in the morning or opening up packaging on food items at home. Handwriting is another form of fine motor skill that requires control over small muscles in order to form letters correctly on paper. This type of activity helps children practice patience while developing accuracy with smaller movements like holding a pencil or scissors correctly while cutting out shapes from paper. Both gross and fine motor skills are essential for optimal development in young children since they both help develop strong cognitive abilities such as problem-solving and attention span while improving overall physical fitness levels at the same time. It’s important for parents to encourage their children to participate in activities that promote both gross & fine motor development so they can experience full-body movement benefits during playtime regardless if it’s indoors or outdoors.