A cellular process that permits the active transport of fluid from outside the cell through the membrane surrounding the cell into the inside of the cell.
In pinocytosis, tiny incuppings called caveolae (little caves) in the surface of the cell close and then pinch off to form pinosomes, little fluid-filled bubbles, that are free within the cytoplasm of the cell.
pinein, to drink + soma, body = a drinking body.
- Pinworm infection
Bathe when you wake up (to help reduce the pinworm egg contamination). Change and wash your underwear each day. Wear pinworm-free underclothing. Frequent changing of night clothes is similarly recommended. Change underwear, night clothes, and sheets after each treatment. Open blinds or curtains in bedrooms during the day (because the pinworm eggs are sensitive to […]
- Piriformis muscle
A muscle that begins at the front surface of the sacrum (the V-shaped bone between the buttocks, at the base of the spine) and passes through the greater sciatic notch to attach to the top of the thighbone (femur) at its bony prominence (the greater trochanter). The gluteus maximus muscle covers the piriformis muscle in […]
A pungent alkaloid that is concentrated in the outer skin of pepper berries (which gives pepper much of its bite) and is found in other spices and vegetables including jalapeno peppers. Piperine is used as a flavoring and as an insecticide. The word is derived from the Latin piper, pepper.
- Piriformis syndrome
Irritation of the sciatic nerve that is caused by compression of the nerve within the buttock by the piriformis muscle. Typically, the pain of piriformis syndrome is increased by contraction of the piriformis muscle, prolonged sitting, or direct pressure applied to the muscle. Buttock pain is common. Piriformis syndrome can cause difficulty walking due to […]