Discuss the effects of holding one's breath for more than a minute
What will be an ideal response?
Normally, carbon dioxide diffuses from your cells and into the blood and is carried to the lungs, where it diffuses into the alveoli and is exhaled. This all occurs because carbon dioxide concentration in the blood is lower than that in the tissue fluids and cells and higher than that in the alveoli. When you hold your breath, the concentration of carbon dioxide in the alveoli increases and prevents diffusion of carbon dioxide from the blood into them. Thus, the concentration of carbon dioxide in the blood begins to increase. Eventually, this increasing carbon dioxide concentration in blood prevents diffusion of carbon dioxide from the tissue fluids and cells into the blood.
You might also like to view...
The energy released in the mitochondrial electron transport chain is used to transport protons into the
A. mitochondrial matrix. B. cytoplasm. C. nucleus. D. endoplasmic reticulum. E. intermembrane space of the mitochondria.
What is a characteristic of the all-or-none response?
a. If a stimulus is strong enough, all axons in a nerve bundle will fire simultaneously. b. A neuron will only produce an action potential if it has been depolarized to its threshold level. c. All neurons of a nerve bundle discharge impulses at the same frequency. d. A neuron can create an action potential of varying intensities. e. Either all or none of the neurons of a brain region will fire impulses when stimulated.
In Drosophila, the sex of an individual is determined by
A. 2 pairs of alleles. B. the number of Y chromosomes. C. the number of X chromosomes. D. 1 pair of alleles. E. 1 pair of autosomes.
In a random screening of athletes at a recent event, a runner was disqualified for testing positive for an injected form of erythropoietin. Which of the following is a consequence of extra erythropoietin in the circulatory system?
A) More red blood cells B) A low white blood cell count C) "Thin" blood that does not clot efficiently D) Low blood pressure