By which method is water absorbed by the small intestine and the colon?
a. Osmosis
b. Diffusion
c. Filtration
d. Active transport
A
Osmosis involves movement of water across a semipermeable membrane, from a more dilute to a more concentrated solution. Absorption of water in the alimentary canal is an example of osmosis. Another example is reabsorption of tissue fluid into the venule ends of the blood capillaries. Diffusion is a passive process by which molecules of a solute move through a cell membrane; this does not fit the described situation. Filtration is movement of water and smaller particles from an area of high pressure (the left ventricle) to one of low pressure (the right ventricle). Active transport occurs when molecules move across cell membranes against a concentration gradient requiring the expenditure of energy. This does not describe the scenario in the question.
You might also like to view...
The mother of a 5-month-old child is concerned because the child cannot sit by himself. The nurse explains that sitting alone is not expected until the baby reaches what age?
a. 6 months b. 7 months c. 8 months d. 9 months
Mechanical breakdown of food is a function of the
a. large intestine. b. liver and pancreas. c. mouth and stomach. d. esophagus and mouth.
The nurse visits a community health clinic in a remote rural area, at which emergency care is not provided because the facility lacks the medical staff necessary to offer such services
Based on this information, which is the most accurate description of this situation? A) Health professional shortage area B) Medically underserved area C) Medically underserved population D) Undeserved population
In order to establish standardized language and diagnostic categories, an approved list of nursing diagnoses is maintained by ___________
Fill in the blank(s) with correct word