Knowledge Tree
breathing
Facts (18)
Sources
7 Major Organ Systems: Functions and Connections instituteofhumananatomy.com Nov 23, 2025 8 facts
claimThe phrenic nerve, which controls the diaphragm, originates from the cervical spine at levels C3, C4, and C5, meaning spinal injuries above this level can disrupt breathing.
measurementHuman lungs have a total capacity of up to 6,000 milliliters of air, though only a fraction of this volume is utilized during normal breathing.
measurementDuring intense physical activity, the respiratory system can increase breathing to as many as 50 breaths per minute, while the heart rate can rise from a resting 70 beats per minute to over 180 beats per minute.
claimHuman lung tissue is spongy and elastic, which allows the lungs to expand and contract during the process of breathing.
measurementThe average human breathing rate at rest is 12–20 breaths per minute, with each breath moving approximately 500 milliliters of air.
claimThe respiratory system relies on the musculoskeletal system, specifically the diaphragm and intercostal muscles, to enable breathing by expanding and compressing the chest cavity to facilitate airflow.
claimThe diaphragm and intercostal muscles power breathing by expanding and compressing the chest cavity to regulate airflow.
measurementThe pleural space between the visceral and parietal pleura contains approximately 10 to 20 milliliters of lubricating fluid to facilitate smooth movement during breathing.
Sex differences in cardiorespiratory control under hypoxia - Frontiers frontiersin.org Jan 30, 2025 3 facts
referenceDeBeck, Petersen, Jones, and Stickland examined the effect of breathing on heart rate variability and muscle sympathetic nerve activity response to acute stress in a 2010 study published in the American Journal of Physiology-Regulatory, Integrative and Comparative Physiology.
claimThe research article 'Sex differences in cardiorespiratory control under hypoxia' focuses on the autonomic nervous system, heart rate variability, hypoxemia, breathing, and sex differences.
claimExperiments in rats have shown that ovarian steroids can influence breathing by decreasing dopaminergic inhibitory activity in the carotid bodies, suggesting sex hormones act directly on the peripheral chemoreflex.
Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI ncbi.nlm.nih.gov 3 facts
referenceBehlfelt (1990) investigated the effects of tonsillectomy on dentition, facial skeleton, the posture of the head, hyoid bone, and tongue, and the mode of breathing in patients with enlarged tonsils.
claimThe lack of cardiorespiratory coordination in infants who die of sudden infant death syndrome may result from defects in the region of the brain responsible for controlling breathing and arousal, potentially preventing the baby from waking up in response to troubled breathing.
claimSleep disturbances associated with Parkinson’s disease include difficulty falling asleep, nocturnal akinesia, altered sleep architecture, abnormal motor activity, periodic limb movements, REM sleep behavior disorder, and disturbed breathing.
The Profound Interplay Between Sleep and Cognitive Function creyos.com Aug 14, 2025 1 fact
claimSleep apnea is characterized by repeated interruptions in breathing during sleep, which leads to fragmented sleep and reduced oxygen levels in the brain.
List of systems of the human body - Wikipedia en.wikipedia.org 1 fact
referenceThe respiratory system performs breathing and the exchange of oxygen and carbon dioxide, utilizing the nose, mouth, paranasal sinuses, pharynx, larynx, trachea, bronchi, lungs, and thoracic diaphragm.
Physiology, Sleep Stages - StatPearls - NCBI Bookshelf - NIH ncbi.nlm.nih.gov 1 fact
claimDuring N1 (Stage 1) sleep, skeletal muscle tone is present and breathing occurs regularly.
How Inflammation Affects Your Health | News - Yale Medicine yalemedicine.org Apr 8, 2022 1 fact
claimHomeostasis is the process the body uses to maintain critical functions necessary for survival, including heart rate, breathing, and glucose and insulin levels.