Explain why hyperventilation can prolong the time you can hold your breath. Can this be dangerous (for example, hyperventilation followed by swimming underwater)?
What will be an ideal response?
Hyperventilation decreases the level of CO2 in blood. Yes, it can be dangerous, especially while exercising, because O2 can be depleted before rising CO2 forces a breath to be taken; therefore you can pass out.
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The layer of epithelial tissue under the fingernail, actually part of the epidermis, is called ________
A) The cuticle B) The nail bed C) The lunula D) The nail body
The first section of the nephron loop glomerular filtrate encounters is the ________
A) Proximal tubule B) Descending loop C) Distal tubule D) Ascending loop
Which of the following statements is/are true?
A. When the knee undergoes a significant amount of flexion, it is necessary for the femur to slide forward on the tibia in order to prevent its rolling off of the tibial plateau. B. During extension, the femur must slide backwards on the tibia. C. both A and B D. none of the above
What is the main function of the urethra?
What will be an ideal response?