Differentiate among atmospheric pressure, intrapulmonary pressure, and intrapleural pressure
What will be an ideal response?
Atmospheric pressure is created by gravity pulling on the air surrounding our bodies. Intrapulmonary pressure is the air pressure within the alveoli that changes with inspiration and expiration, but always equalizes with atmospheric pressure. Intrapleural pressure is the pressure within the pleural cavity. It also changes with inspiration and expiration but does not equalize with atmospheric pressure.
You might also like to view...
This figure shows an anterior view of the spinal cord and meninges. What structure does number 7 indicate?
A. Arachnoid B. Pia mater C. Dura mater D. Gray matter E. White matter
Which is the correct path of an electrical excitation from the pacemaker to a cardiomyocyte in the left ventricle (LV)?
A. Atrioventricular (AV) node ? sinoatrial (SA) node ? atrioventricular (AV) bundle ? Subendothelial conducting network ? cardiomyocyte in LV B. Sinoatrial (SA) node ? atrioventricular (AV) node ? atrioventricular (AV) bundle ? Subendothelial conducting network ? cardiomyocyte in LV C. Sinoatrial (SA) node ? atrioventricular (AV) node ? Subendothelial conducting network ? atrioventricular (AV) bundle ? cardiomyocyte in LV D. Atrioventricular (AV) node ? subendothelial conducting network ? atrioventricular (AV) bundle ? sinoatrial (SA) node ? cardiomyocyte in LV E. Sinoatrial (SA) node ? atrioventricular (AV) bundle ? atrioventricular (AV) node ? Subendothelial conducting network ? cardiomyocyte in LV
Smooth muscle contractions help to propel sperm in the
A. rete testis. B. ductus deferens. C. seminal receptacle. D. seminiferous tubule. E. ejaculatory duct.
For an action potential to be generated the signal must be strong enough at the axon hillock to bring the membrane voltage to a critical value called the THRESHOLD. The threshold value is typically at