Colitis in Dogs. Colitis is an inflammation or irritation of the colon or large intestine and, you guessed it: it commonly causes diarrhea in our furry friends. Colitis can be acute (meaning it comes on suddenly) or chronic (lasting several weeks or longer, or recurring). There are several potential causes of colitis. They include:
Dopamine is a neurotransmitter released by the brain that plays a number of roles in humans and other animals. Some of its notable functions are in: 1  movement. 2  memory. 3  pleasurable reward. 4  behavior and cognition. 5  attention. 6  inhibition of prolactin production.
The levels of hormones in the body can be regulated by several factors. The nervous system can control hormone levels through the action of the hypothalamus and its releasing and inhibiting hormones. For example, TRH produced by the hypothalamus stimulates the anterior pituitary to produce TSH. Tropic hormones provide another level of control for the release of hormones.