The Neural Impulses Sent from Your Eyes to the Visual

question 232

Multiple Choice

The neural impulses sent from your eyes to the visual processing centers of your brain will be no stronger or faster if you glance at a large campfire than if you glance at a burning candle.This best illustrates a characteristic of neural functioning known as

• A) reuptake.
• B) depolarization.
• C) selective permeability.
• D) an all-or-none response.

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Definitions:

Pyelonephrosis

Pyelonephrosis is a condition characterized by dilation of the renal pelvis and calyces, often due to obstruction or infection.

Hydronephrosis

Swelling of a kidney due to a build-up of urine, often caused by an obstruction in the urinary tract.

Intravenous Pyelogram

A radiographic procedure that uses a contrast dye to visualize the kidneys, ureters, and bladder.

Barium Enema

A radiologic procedure performed by a radiologist who administers barium sulfate through the anus, into the rectum, and then into the colon to help diagnose and evaluate obstructions, ulcers, polyps, diverticuloses, tumors, or motility problems of the colon or rectum; also called a lower GI (gastrointestinal) series.