Answer:
D. The sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.
Explanation:
- Sympathetic and Parasympathetic nervous system are two divisions of autonomic nervous system.
- Acetylcholine is a common neurotransmitter released by preganglionic neurons of both systems.
- The post Ganglionic neurons of these two systems release different neurotransmitter.
- The sympathetic nervous system is concerned with 'fight and flight response'
- The parasympathetic nervous system is concerned with 'rest and digest ' response.
Your Answer would be 3. Also known as Lithium.
Process that is not properly matched with its description is: external respiration: CO2 diffuses into the blood stream
Respiration is the process by which O2 and CO2 diffuse into the blood and get out of the blood (gas exchange occurs). There are two types of respiration:
1. External respiration - gas exchange between the external environment and the lungs. This is what we call breathing. So the example above is not external respiration.
2. Internal respiration - gas exchange between the cells of the body and the blood
