The Hormone Gastrin Is Released in Response To

question 29

Multiple Choice

The hormone gastrin is released in response to:

• A)the presence of food in the stomach.
• B)contraction of the gastroesophageal sphincter.
• C)relaxation of the anal sphincter.
• D)the presence of the bacteria Helicobacter pylori in the stomach.

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Definitions:

Hypothalamus

A region of the brain that coordinates the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems.

Thalamus

A part of the brain located in the center of the cerebral hemisphere, which acts as a relay station for sensory information.

Epithalamus

A posterior segment of the diencephalon of the brain, involved in the regulation of sleep-wake cycles and the secretion of melatonin from the pineal gland.

Corpora Quadrigemina

Located in the midbrain, the corpora quadrigemina is composed of four colliculi - two superior and two inferior - involved in visual and auditory reflexes.