Cocaine induces a sense of exhilaration by increasing the availability of dopamine and serotonin in synapses. Cocaine is among the powerful stimulants which increase the release of neurotransmitters such as nor-epinephrine, dopamine and serotonin, that affect CNS and PNS activity. Cocaine administration constricts blood vessels that are absorbing it, son snorting it is a slow way to deliver it to blood stream and eventually the brain.
Answer:
D. Brand B lightbulb will burn longer in a lamp than Brand X lightbulb
Answer:
1. The gas loses thermal energy.
2. The particles of gas move slower.
3. The space between the gas particles decreases.
4. The gas changes to a liquid.
Explanation:
Answer:
A
Explanation:
510K approval is required to demonstrate that device to be marketed is substanitally similar to an already legally approved and marketed device and therefore safe to use
PMA approval is required to approve Class III type medical devices that are new and have not been marketed. They involve human participants.
Clinical trials involve volunteers and is carried out when a drug or device has been tested in laboratory
Exempt status is given to class I devices and not to class III devices.
