3. Respiration - Ping Pong
... Dynamic spirometry is used to measure flow, especially during expiration. To create a flow of air in to the lungs, the surrounding tissues need to create and change the pressure surrounding the lungs. These pressures are relatively small and are usually described in cmH2O. The air pressure is set at ...
... Dynamic spirometry is used to measure flow, especially during expiration. To create a flow of air in to the lungs, the surrounding tissues need to create and change the pressure surrounding the lungs. These pressures are relatively small and are usually described in cmH2O. The air pressure is set at ...
11 Respiratory physiology
... • Air has weight; atmospheric pressure is 760 mmHg at sea level (much less weight and pressure at high altitudes). • Since air will flow from higher pressure to lower pressure areas, to get the air to flow into our lungs, we need to have a lower pressure in our lungs. • We can decrease the pressure ...
... • Air has weight; atmospheric pressure is 760 mmHg at sea level (much less weight and pressure at high altitudes). • Since air will flow from higher pressure to lower pressure areas, to get the air to flow into our lungs, we need to have a lower pressure in our lungs. • We can decrease the pressure ...
Chapter 16 - Dr. Dorena Rode
... ___ 24. Which of the following statements best describes the vital capacity of the lung? a. the volume of gas inspired or expired in an unforced respiratory cycle b. the volume of gas remaining in the lungs after a maximum expiration c. the total amount of gas in the lungs at the end of a maximum in ...
... ___ 24. Which of the following statements best describes the vital capacity of the lung? a. the volume of gas inspired or expired in an unforced respiratory cycle b. the volume of gas remaining in the lungs after a maximum expiration c. the total amount of gas in the lungs at the end of a maximum in ...
Patent ductus arteriosus, bottle-meal, and fatal myocardial ischemia
... A decision was taken not to attempt to close the PDA. In the 6th week of life, at a corrected gestational age of 32 6/7 weeks, the boy was offered a meal from the bottle. At this time he was on an 8-meal-regimen with 30 ml of human milk per meal (150ml/kg/day). Forty-five minutes after the second bo ...
... A decision was taken not to attempt to close the PDA. In the 6th week of life, at a corrected gestational age of 32 6/7 weeks, the boy was offered a meal from the bottle. At this time he was on an 8-meal-regimen with 30 ml of human milk per meal (150ml/kg/day). Forty-five minutes after the second bo ...
Relation of the Lungs to the Thoracic (Chest) Wall
... represent the initial and resulting conditions respectively. Gases always fill their container. Therefore, in a large container, the molecules in a given amount of gas will be far apart and the pressure will be low. But if the volume of the container is reduced, the gas molecules will be forced clos ...
... represent the initial and resulting conditions respectively. Gases always fill their container. Therefore, in a large container, the molecules in a given amount of gas will be far apart and the pressure will be low. But if the volume of the container is reduced, the gas molecules will be forced clos ...
No Slide Title
... the ramp, more filling of the lungs. The signals to the muscles of the upper airways are not a ramp. This insures that the muscles of the upper airways are active just before the inspiratory effort from the diaphragm. Maintains patency of the upper airways during inspiration. ...
... the ramp, more filling of the lungs. The signals to the muscles of the upper airways are not a ramp. This insures that the muscles of the upper airways are active just before the inspiratory effort from the diaphragm. Maintains patency of the upper airways during inspiration. ...
RESPIRATION
... blood supply through minute arteries, directly from the trunk. Their blood flow is roughly 20 times their own weight. They are all the time exposed only to arterial blood. PO2 stimulates these chemoreceptors strongly. ...
... blood supply through minute arteries, directly from the trunk. Their blood flow is roughly 20 times their own weight. They are all the time exposed only to arterial blood. PO2 stimulates these chemoreceptors strongly. ...
Respiratory System (Power Point Document)
... I. POSITION AND STRUCTURE :The nasal cavity is the main route of air entry , and consists of a large irregular cavity divided in to two equal passages by a septum . The posterior bony part of the septum is formed by the perpendicular plate of the ethmoid bone and vomer. Anteriorly, it consists of h ...
... I. POSITION AND STRUCTURE :The nasal cavity is the main route of air entry , and consists of a large irregular cavity divided in to two equal passages by a septum . The posterior bony part of the septum is formed by the perpendicular plate of the ethmoid bone and vomer. Anteriorly, it consists of h ...
Respiratory Physiology
... Large slope of curve middle section, big compliance and small resistance; When lung volume is justo major or justo minor, curve slope become smaller and elastic resistance larger. When lung volume is 67% of total lung capacity, transmural pressure is zero, and chest is at a natural (neutral) pos ...
... Large slope of curve middle section, big compliance and small resistance; When lung volume is justo major or justo minor, curve slope become smaller and elastic resistance larger. When lung volume is 67% of total lung capacity, transmural pressure is zero, and chest is at a natural (neutral) pos ...
CHAPTER 1 Anatomy and physiology of the human respiratory system
... be P = 3.0V̇ + 3.0·[V̇ ]2 . Results are close to those originally described by Rohrer, particularly when resistances imposed by viscoelastic properties of the lung and thoracic tissues are removed, since these are not a part of Rohrer’s estimates [10]. 2.3 Alveolar ventilation is not uniform even i ...
... be P = 3.0V̇ + 3.0·[V̇ ]2 . Results are close to those originally described by Rohrer, particularly when resistances imposed by viscoelastic properties of the lung and thoracic tissues are removed, since these are not a part of Rohrer’s estimates [10]. 2.3 Alveolar ventilation is not uniform even i ...
Slide 1
... – Large volumes hurt the lungs – There is a greater incidence of later-onset ARDS in patients who are obese than there are in leaner patients (Gong, et al.; Thorax. 2010;65(1):44-50) ...
... – Large volumes hurt the lungs – There is a greater incidence of later-onset ARDS in patients who are obese than there are in leaner patients (Gong, et al.; Thorax. 2010;65(1):44-50) ...
1. In which of the following fluids is the pH highest (most alkaline
... alkalosis can never be complete (return plasma pH to normal) is that (Note: PaCO2 = systemic arterial carbon dioxide partial pressure.) A. high PaCO2 inhibits respiratory ventilation B. high PaCO2 stimulates respiratory ventilation C. low PaCO2 inhibits respiratory ventilation D. low PaCO2 stimulate ...
... alkalosis can never be complete (return plasma pH to normal) is that (Note: PaCO2 = systemic arterial carbon dioxide partial pressure.) A. high PaCO2 inhibits respiratory ventilation B. high PaCO2 stimulates respiratory ventilation C. low PaCO2 inhibits respiratory ventilation D. low PaCO2 stimulate ...
Placenta - Academics
... 2. Heart rate 3. Mean arterial pressure 4. Systemic vascular resistance ...
... 2. Heart rate 3. Mean arterial pressure 4. Systemic vascular resistance ...
Respiratory physiology
... Lung vessels lack high resistance arterioles, which accounts for their low resistance to blood flow. However, the lack of arterioles also compromises the ability of the lung to readily control the distribution of blood flow. Blood flow in the upright lung is distributed preferentially to the lung ba ...
... Lung vessels lack high resistance arterioles, which accounts for their low resistance to blood flow. However, the lack of arterioles also compromises the ability of the lung to readily control the distribution of blood flow. Blood flow in the upright lung is distributed preferentially to the lung ba ...
2. Physiology_Respiratory_System
... as low as - 30mm Hg, producing correspondingly greater degrees of lung inflation Since in the question we are not dealing with normal inspiration which reduces the intrapleural pressure to6mm Hg, but with deep inspiration which reduces the intrapleural pressure even more, and with regards tothe refe ...
... as low as - 30mm Hg, producing correspondingly greater degrees of lung inflation Since in the question we are not dealing with normal inspiration which reduces the intrapleural pressure to6mm Hg, but with deep inspiration which reduces the intrapleural pressure even more, and with regards tothe refe ...
Respiratory Physio Detailed File
... Pulmonary Ventilation • Inspiration and expiration • Mechanical processes that depend on volume changes in the thoracic cavity – Volume changes pressure changes – Pressure changes gases flow to equalize pressure ...
... Pulmonary Ventilation • Inspiration and expiration • Mechanical processes that depend on volume changes in the thoracic cavity – Volume changes pressure changes – Pressure changes gases flow to equalize pressure ...
2672aLec16
... no cell is more than 2-3 cell diameters from a tracheole Tissues with high metabolism (e.g. flight muscle) may have at least one terminal tracheole penetrating each cell (!) On-tap oxygen in every cell! ...
... no cell is more than 2-3 cell diameters from a tracheole Tissues with high metabolism (e.g. flight muscle) may have at least one terminal tracheole penetrating each cell (!) On-tap oxygen in every cell! ...
Respiratory physiology - Assets - Cambridge
... Peripheral chemoreceptors are situated in the carotid bodies and the aortic arch. The carotid bodies contain two types of glomus cells. Type 1 cells are rich in dopamine and are close to the end of the carotid sinus nerve. The glomus cells are affected by raised PaCO2 and decreased pH, although pH h ...
... Peripheral chemoreceptors are situated in the carotid bodies and the aortic arch. The carotid bodies contain two types of glomus cells. Type 1 cells are rich in dopamine and are close to the end of the carotid sinus nerve. The glomus cells are affected by raised PaCO2 and decreased pH, although pH h ...
PPT - gserianne.com
... capillary, and the shared basement membrane between them Mechanisms that prevent alveoli from filling with fluid: 1) cells of alveolar wall are tightly joined together 2) the relatively high osmotic pressure of the interstitial fluid draws water out of them 3) there is low pressure in the pulmonary ...
... capillary, and the shared basement membrane between them Mechanisms that prevent alveoli from filling with fluid: 1) cells of alveolar wall are tightly joined together 2) the relatively high osmotic pressure of the interstitial fluid draws water out of them 3) there is low pressure in the pulmonary ...
lecture16-pulm
... distributed around the lungs? Where does the blood go? Where does the interstitial fluid go? What factors affect the regulation of blood flow? ...
... distributed around the lungs? Where does the blood go? Where does the interstitial fluid go? What factors affect the regulation of blood flow? ...
NeoReviewsPlus 2008 - American Academy of Pediatrics
... beta-adrenergic stimulation by the sympathetic nervous system. Angiotensin II inhibits renin secretion. The half-life of renin in the circulation is 15 minutes. Angiotensinogen, or renin substrate, is an a 2 -globulin made mainly in the liver. It is a glycoprotein with a molecular weight of 55 to 60 ...
... beta-adrenergic stimulation by the sympathetic nervous system. Angiotensin II inhibits renin secretion. The half-life of renin in the circulation is 15 minutes. Angiotensinogen, or renin substrate, is an a 2 -globulin made mainly in the liver. It is a glycoprotein with a molecular weight of 55 to 60 ...
Lec 8Aviation, High-Altitude by Prof. Saboohi
... • The centrifugal acceleratory force is +5 G and • the person is in an immobilized standing position, • the pressure in the veins of the feet becomes greatly increased (to about 450 mm Hg) and nearly 300 mm Hg in the sitting position. • As pressure in the vessels of the lower body increases, • These ...
... • The centrifugal acceleratory force is +5 G and • the person is in an immobilized standing position, • the pressure in the veins of the feet becomes greatly increased (to about 450 mm Hg) and nearly 300 mm Hg in the sitting position. • As pressure in the vessels of the lower body increases, • These ...
Saladin 5e Extended Outline
... iii. As many as 100 million of them perish each day as they ride up the mucociliary escalator. e. Each alveolus is surrounded by a basket of blood capillaries supplied by the pulmonary artery. i. The barrier between the alveolar air and blood, called the respiratory membrane, consists only of the sq ...
... iii. As many as 100 million of them perish each day as they ride up the mucociliary escalator. e. Each alveolus is surrounded by a basket of blood capillaries supplied by the pulmonary artery. i. The barrier between the alveolar air and blood, called the respiratory membrane, consists only of the sq ...
Control of Respiration
... decreased over a wide range. For simplicity, we shall describe the control of ventilation without discussing whether rate or depth makes the greater contribution to the change. There are many inputs to the medullary inspiratoryneurons, but the most important for the automatic control of ventilation ...
... decreased over a wide range. For simplicity, we shall describe the control of ventilation without discussing whether rate or depth makes the greater contribution to the change. There are many inputs to the medullary inspiratoryneurons, but the most important for the automatic control of ventilation ...
Acute respiratory distress syndrome
Acute respiratory distress syndrome (ARDS), previously known as respiratory distress syndrome (RDS), acute lung injury, adult respiratory distress syndrome, or shock lung, is a severe, life-threatening medical condition characterized by widespread inflammation in the lungs. While ARDS may be triggered by a trauma or lung infection, it is usually the result of sepsis.ARDS is a disease of the microscopic air sacs of the lungs (alveoli) that leads to decreased exchange of oxygen and carbon dioxide (gas exchange). ARDS is associated with several pathologic changes: the release of inflammatory chemicals, breakdown of the cells lining the lung's blood vessels, surfactant loss leading to increased surface tension in the lung, fluid accumulation in the lung, and excessive fibrous connective tissue formation.The syndrome has a high mortality between 20 and 50%. The mortality rate with ARDS varies widely based on disease severity, a person's age, and the presence of other medical conditions.The acronym ARDS formerly signified ""adult respiratory distress syndrome"" to differentiate it from ""infant respiratory distress syndrome"", which occurs in premature infants. However, as this type of pulmonary edema also occurs in children, ARDS has gradually shifted to mean ""acute"" rather than ""adult"". The differences from the typical infant syndrome remain.