Examlex
In addition to the sinus venosus and the conus arteriosus the heart of a frog has two __________ and one __________.
Norepinephrine
A neurotransmitter and hormone involved in the body's fight or flight response, affecting mood and arousal.
Blood Pressure
The force exerted by circulating blood upon the walls of blood vessels, typically measured in the arteries.
Tension Reduction Hypothesis
A theory suggesting that individuals engage in certain behaviors, such as substance use, to reduce psychological tension or stress.
Positive Reinforcement
A behavioral principle where the addition of a rewarding stimulus following a desired behavior increases the likelihood of that behavior being repeated in the future.
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