OSHA considers methylene chloride to be a potential occupational carcinogen. Short-term exposures to high concentrations may cause mental confusion, lightheadedness, nausea, vomiting, and headache. Continued exposure may also cause eye and respiratory tract irritation. Exposure to methylene chloride may make symptoms of angina more severe. Skin exposure to liquid methylene chloride may cause irritation or chemical burns. Allegra-D 24 Hour 180 mg / 240 mg (Sanofi-Aventis)
2 3 5 Distinguish Between Active And Passive Transport And R. Movement of materials into and out of cells takes place either passively or actively. Passive movement includes diffusion and osmosis, passive movement requires no energy input from the cell â since the molecules follow a concentration gradient. Active transport requires energy as the molecules are forced against the concentration gradient.
Within the kidney the movement of substances, between the bloodstream and excretory fluid, occurs in the microscope tubules (nephrons) and involves both active and passive transport. Within the kidney tubules there is a two-way movement of substances â waste substances pass from the bloodstream into the nephrons to be excreted and substances required by the body and removed from the urine and returned into the bloodstream.