Ch2 and 3 Flashcards
(39 cards)
Cerebral cortex: for lobes
Occipital, temporal, pariental, frontal
Occipital lobe
Visual inf
Temporal lobe
Memory, visual recognition, emotions, auditory information
frontal lobe
Planing, organizing
Embryo times
3-8w
Fetus
9w-birth
Hemispheres
Brain decided in to 2 hemispheres by corpus calosum
When neurons are formed
18w after conception
Synapses elimination
When we are born we have more neurons and synapses then we need, as a result new borne can experience synesthesia. With time they die.
Gametes
cells from father 23 chromosomes(500 million), and from mother 23 chromosomes (only one cell) (produced trough meiosis)
Developmental process
Zygote→embryo→fetes
Neural tube of fetus
cells in the emryo that eventual becomes brain and spinal cord
Amniotic sack
a membrane filed with clear watery fluid that keeps the temperature for fetes and protects it from gravity so it can exercise it’s muscles
Placenta
keeps circulatory system of mother and fetus separate, but permits exchange of oxygen and nutrients
Umbilical cord
the cord containing blood vessels connecting fetes to placenta
Cell migration
Cell differentiation
Apoptosis
Cell migration
- cells are migrating form one region to another
Cell differentiation
- Division of the cells into types to serve a specific function
Apoptosis
- Death of the cells that need to die (especially in hand development) pre programed
Genome
the complete set of genes of any organism
Things that influences child
Parent genotype→ child genotype Child’s genotype→ child’s phenotype Child’s environment→child’s phenotype Child’s phenotype→child’s environment (active child) Child’s environment→child’s genotype
Multifactorial traits
refers to traits that are affected by multiple factors (envirmental as well as genetics
Family studies:
Adoption
Twin
Adoptive twin study (perfect one)
Parts of neuron
- Cell body- consist of nucleolus and other basic to all body cells.
- Dendrites –receive impute for the neuron.
- Axons- thin, tube-like extensions from the cell body. Cary massages to other neurons/ muscles cells ( in case of motor neurons)
- Myelin shells- many axons are covered –>convey the nerve impulse rapidly.
- Synapses- place where neurons communicate with one another
Synaptogenesis-
the process by which neurons form synapses with other neurons, resulting in trillion of connections
Synapses pruning (synapse elimination)
process by which synapses that are rarely activated are eliminated (40% of our synapses)
Experience expected plasticity
brain plasticity that everyone with a normal experience are going to have
