the RespiRatoRy system 191the respiratory system
The airways and lungs bring in air and
deliver the oxygen it contains into the
bloodstream for transport to all living
body cells. Exhaled air eliminates waste
carbon dioxide that is produced as
cells carry out aerobic respiration.the respiratory system in homeostasis
Muscular system
Respiratory controls over the rate and depth
of breathing adjust oxygen intake and removal
of carbon dioxide to service the changing
demands of muscle tissue.Immunity and the lymphatic system
Cilia and mucus in airways trap foreign
material, functioning as physical barriers to
infection.Urinary system
Binding H+ by hemoglobin complements
kidney functions that help maintain pH of
blood and tissue fluid.Nervous system
Air vibrating vocal cords allows an individual to
produce spoken language.Sensory systems
Epithelium in the nose contains sensory
receptors for smell (olfaction).Endocrine system
Cells in the lungs form an enzyme (angiotensin-
converting enzyme) that acts in the formation
of the hormone angiotensin II, which influences
formation of urine in the kidneys.Cardiovascular system and blood
Adjustments in elimination of CO 2 help
manage hydrogen ions (H^1 ) in blood and so
help maintain blood pH (acid–base balance).Reproductive system
Via the mother’s cardiovascular system and
the placenta, the respiratory system supplies
oxygen to and removes carbon dioxide from
Unless otherwise indicated, all art on this page is © Cengage Learning. the blood of a developing fetus.Digestive system
Voluntary contraction of the diaphragm
muscle may aid voiding of feces from the
large intestine/rectum.10.9
ConnECtions
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