This topic contains a solution. Click here to go to the answer

Author Question: Ralph is taking scuba diving classes and is warned not to hold his breath when ascending from depth ... (Read 62 times)

hbsimmons88

  • Hero Member
  • *****
  • Posts: 526
Ralph is taking scuba diving classes and is warned not to hold his breath when ascending from depth but to continuously release air from his mouth. What is the basis of this instruction and what is the risk if it is ignored?

Question 2

A period of adjustment is required when moving from a dark room into bright light because
 A) the breakdown of rhodopsin to opsin occurs slowly.
  B) the lens requires time to accommodate dim light.
  C) rods exposed to strong light need time to regenerate rhodopsin.
  D) rhodopsin does not function in dim light.
  E) only cones function in dim light.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

14vl19

  • Sr. Member
  • ****
  • Posts: 310
Answer to Question 1

When breathing underwater with scuba equipment, gas is supplied by the tank at higher than atmospheric pressure to overcome the extra pressure imposed by the overlying water. According to Boyle's Law, during ascent when the pressure falls, the volume of gas contained in the lungs will expand. If not permitted to escape through the mouth, nitrogen will come out of solution and form gas bubbles in the joint as well as in the blood stream. A massive air embolism in the pulmonary arteries could be suddenly fatal.

Answer to Question 2

C




hbsimmons88

  • Member
  • Posts: 526
Reply 2 on: Feb 28, 2019
YES! Correct, THANKS for helping me on my review


AngeliqueG

  • Member
  • Posts: 343
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

For a complete list of videos, visit our video library