Sentences with phrase «during fetal development there»

Not exact matches

During her maternity, with each trimester there is significant fetal development and at specific points during the pregnancy weeks, prenatal testing by ultrasound is done to determine the health of the During her maternity, with each trimester there is significant fetal development and at specific points during the pregnancy weeks, prenatal testing by ultrasound is done to determine the health of the during the pregnancy weeks, prenatal testing by ultrasound is done to determine the health of the fetus.

In animal models, exposure to cigarette smoke or nicotine during fetal development alters the expression of the nicotinic acetylcholine receptor in areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDS.

«There is a growing consensus in the scientific community that small doses of pesticides and other chemicals can have adverse effects on health, especially during vulnerable periods such as fetal development and childhood,» reports author and physician Andrew Weil, a leading voice for so - called integrative medicine combining conventional and alternative medical practices.

There is a dramatic increase of cortical surface area during late fetal development as a result of cortical folding, while there is a dynamic change of cortical thickness during the entire life span as a result of development and disThere is a dramatic increase of cortical surface area during late fetal development as a result of cortical folding, while there is a dynamic change of cortical thickness during the entire life span as a result of development and disthere is a dynamic change of cortical thickness during the entire life span as a result of development and disease.

There are critical periods during fetal development for plant seeds just like for animals when exposure to something adverse has bad results — before or after the critical point, no worry.