Final answer:
Fluid movement is influenced by hydrostatic and osmotic pressures (b). Hydrostatic pressure is generated by the heart pumping blood, and osmotic pressure is created by the solute concentration differences across a membrane. Both pressures contribute to the movement of fluids within the body's compartments. The correct option is B.
Step-by-step explanation:
When teaching the staff about body fluid movement, it is important to convey that fluid movement is influenced by hydrostatic and osmotic pressures. The hydrostatic pressure, which is the force exerted by a fluid against a wall, is generated by the heart pumping blood through the blood vessels. This pressure is one of the primary factors behind the movement of fluids between compartments, such as the push of plasma and nutrients from the capillaries into the surrounding tissues.
Additionally, osmotic pressure plays a crucial role in fluid movement. It is the pressure created by the solute concentration differences across a membrane, contributing to the reabsorption of fluids back into the capillaries from the surrounding tissues. Blood pressure and osmotic pressures are interrelated, as changes in the concentration of solutes can alter the osmotic pressure, and consequently impact blood pressure.
While the lymphatic system does remove excess fluid from tissues and returns it to the circulatory system, it is not the primary controller of fluid movement. Similarly, fluid movement is not solely regulated by the cardiovascular system, nor is it independent of blood pressure. The correct information to include in a nurse's teaching session about body fluid movement is that fluid movement is influenced by hydrostatic and osmotic pressures (b).