Asked by Alexander Montanez on May 12, 2024
Verified
After drinking several cups of strong coffee, a person develops "coffee nerves" or "jitters." This probably is due to the ability of caffeine to ________.
A) block adenosine receptor sites
B) cause neurotransmitters to leak out of the synaptic vesicles and be destroyed by enzymes
C) cause an increase in the release of excitatory neurotransmitters
D) inhibit enzymes which break down excitatory neurotransmitters
Adenosine Receptor Sites
Specific cellular locations where adenosine can bind, influencing various physiological processes.
Caffeine
A stimulant found in coffee, tea, chocolate, and some medications, known for its effects on increasing alertness and reducing fatigue.
Excitatory Neurotransmitters
Chemical substances released by neurons to transmit signals across synapses, promoting the firing of action potentials in receiving neurons, thus facilitating brain and nervous system activity.
- Recognize the impact of external substances, such as drugs, on neurotransmitter activity and neural function.
Verified Answer
JJ
Jessica JohnsMay 14, 2024
Final Answer :
A
Explanation :
Caffeine blocks adenosine receptor sites in the brain, which normally inhibit the release of excitatory neurotransmitters. This leads to an increase in the release of these neurotransmitters and can result in jittery or anxious feelings.
Learning Objectives
- Recognize the impact of external substances, such as drugs, on neurotransmitter activity and neural function.