Ch3 Flashcards
Alert inactivity
State in which a baby is calm with eyes open and attentive and the baby seems to be deliberately inspecting the environment
Walking activity
State in which the babies eyes are open but seem unfocused and the arms or legs move in burst of uncoordinated motion
Crying
State in which a baby cries vigorously usually companies by agitated but Uncoordinated movement
Sleeping
State in which a baby alternate from being still and breathing regularly to moving gently and breeding you regularly and in which the eyes are closed throughout
Basic cry
Cry that start softly and gradually becomes more intense often heard when babies are hungry or tired
Mad cry
More intense version a basic cry
pain cry
Cry that begins with the sun long burst followed by a long pause and gasping
Rapid eye movement REM sleep
Sleep in which a person’s eyes dart rapidly beneath eyelids
Regular sleep
Sleep in which heart rate breathing and brain activity our steady
Sudden infant death syndrome
Situation in which a healthy baby dies suddenly for no apparent reason
Neuron
Basic cellular unit of the brain and nervous system that specializes in receiving and transmitting information
Cell body
Center of the neuron that keeps the neuron alive
Dendrite
And of the neuron that receives information it looks like a tree with many branches
Axon
Tubelike structure that emerges from the cell body and transmits information to other neurons
Terminal buttons
Small knobs at the end of the axon that release neurotransmitters
Neurotransmitters
Chemicals released by the terminal buttons that allowed neurons to communicate with each other
Hemispheres
Right and left half of the cortex
Corpus callosum
Big bundle of neurons that connect the two hemispheres
Frontal cortex
Brain region that regulates personality and goal direction behavior
Neural plate
Flat group of cells present and prenatal development that become the brain and spinal cord
Myelin
Fatty sheath that wraps around the neurons to permit them to transmit information more rapidly
Synaptic pruning
Gradual reduction in the number of synapse beginning in the infancy and continuing until adolescence