Mature and immature body systems

Within the first year of life, infants grow on an average by 25—27 cm. Guven S. Узнать больше. Lodish et al. Premature infants and infants with low weight are at risk for respiratory disturbances, apnea and arrhythmia. This condition is usually due to oxygen deficiency of the central nervous system that occurs in a problematic course of perinatal period which is complex for a child. The egg and sperm … together as one cell.

ISSN Archived from the original on 5 November Many systems and mechanisms interact in order to maintain homeostasis , with safe levels of substances such as sugar and oxygen in the blood.

Veterinary Pathology. International Journal of Gynecological Pathology. The nervous system receives information from the body, and transmits this to the brain via nerve impulses and neurotransmitters. Human Biology and Health. National Cancer Institute.