All of these must pass through the cell membrane. Transport may occur by diffusion and osmosis across the membrane. It can also occur when a vescicle attaches to the cell membrane from the inside and then opens to form a pocket, expelling its contents to the outside. This may be called exocytosis.
What is an MRCP? </>An MRCP test is a specialized MRI exam that evaluates the hepatiobiliary and pancreatic systems, including the liver, gallbladder, bile ducts, pancreas and pancreatic duct. An MRCP test can also be ordered to find the cause of pancreatitis or diagnose unexplained abdominal pain. Additionally, MRCP is a less invasive alternative to ERCP, a procedure that uses an endoscope combined with an IV injection of x-ray contrast dye and fluoroscopy (x-ray images).
The difference between an MRI and MRA scan. How are MRI and MRA scans different? An MRI and an MRA scan are very similar, but besides the single letter at the end, they differ in what they are often used for. A MRA, or magnetic resonance angiography, is basically a type of magnetic resonance image (MRI) scan. Both tests use a strong magnetic pull and pulses of radio waves to show us images of blood vessels inside the body.