Leon has gallstones. His doctor puts him on a diet low in fat. Why?
The gallbladder functions to concentrate and store bile produced by the liver. In this capacity, the gallbladder reabsorbs water from the bile. Since bile salts are produced from cholesterol, these salts will be precipitated as cholesterol-like gallstones if too much water is reabsorbed. Whenever bile is released by the gallbladder in response to the presence of fats in the duodenum, the smooth muscle in the wall of the gallbladder must contract. This generates severe pain if the cystic duct or common bile duct is blocked by kidney stones. To minimize or prevent this pain Leon's doctor prescribes a low-fat diet. Thus there is less fat in the diet, less contraction of the gallbladder, and less pain.
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Your study partner is having difficulty understanding dense fibrous connective tissue, tendons, and ligaments. Explain to her how they are related to each other and how they are different from other categories of connective tissue.
What will be an ideal response?
ADH and oxytocin are secreted by
A) neuroglia. B) neurons. C) neuromuscular cells. D) neurosecretory cells.
Match the glial cell with its function.A. Influence function of blood-brain barrierB. Macrophages in CNSC. Produce cerebrospinal fluidD. Form myelin sheath around axons in CNSE. Form myelin sheath around part of the axon in the PNSEpendymal cells
Fill in the blank(s) with the appropriate word(s).
The inferior end of the spinal cord is anchored to the coccyx by the
A) cauda equina. B) conus medullaris. C) filum terminale. D) tectum.