QuestionSBA
QuestionChoice
Synaptic pruning only occurs after birth and continues into adolescence. The early postnatal phase is marked by an extraordinary level of neural plasticity, allowing the brain to adapt and learn from new experiences and environmental stimuli. As a child progresses through infancy and early childhood, selective elimination and weakening of synapses that are less frequently used or are less essential for efficient neural circuitry occurs.
10025294
e
Synaptic pruning
QuestionChoice
Formation of bilaminar embryonic disc occurs approximately on day 9 post-fertilisation. After implantation, the inner cell mass differentiates into the epiblast and the hypoblast. These two layers are separated by a thin basal lamina and form the bilaminar disc.
10025292
c
Formation of bilaminar disc
QuestionChoice
Gastrulation occurs in the week 2 post-fertilisation. The process of gastrulation converts the bilaminar disc into a trilaminar disc. Through gastrulation, the three primary germ layers, ectoderm, mesoderm and endoderm are formed.
10025291
b
Gastrulation
QuestionChoice
Myelination occurs in the third trimester around week 30 post-fertilisation and continues well into adulthood. During the embryonic and foetal stages, oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system are responsible for producing myelin. After birth, myelination continues, and it is most pronounced in the early years of life. Myelination is essential for the development of motor skills, sensory perception, and cognitive functions by allowing rapid neuronal conduction.
10025293
d
Myelination
QuestionChoice
Neurulation occurs in weeks 3-4 post-fertilisation and stimulates the development of the nervous system. The process starts with the formation of a flat, thickened sheet of ectodermal cells called the neural plate along the dorsal surface of the embryo. The neural plate will eventually give rise to the central nervous system.
10025290
a
Neurulation
Concept
Chapter
2693
3874
Neurulation
Topic
171
Embryology
17456
A 32 year old woman is looking to conceive her first baby. She asks her gynaecologist what happens during embryological development.

Which of the following occurs in weeks 3-4 post-fertilisation?
a