Induced depression of single neurons in brain areas with opiate receptors
- Enkephalin, applied microiontophoretically, depressed spontaneous and glutamate-induced firing of one neuron in frontal cortex, caudate nucleus, and periaqueductal gray matter, where enkephalin and high concentrations of opiate receptors are met.
- More than one depressions were blocked by the specific narcotic antagonist naloxone. The results are durable with a neurotransmitter or neuromodulator role for this new brain pentapeptide.
- Opium derivatives have been in medical use for the last 2000 years, and may be longer than any other class of drugs
- . The brain regions which was involved in these actions have been identified in some instances by local microinjection of pmole quantities of opioids.
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Answer:
Option(C): drinking water from streams and ponds
A.<span>Beneficial insects may be adversely affected. </span>
Majority of animals on earth are classified as invertebrates. They are the cold-blooded animal that do not have a backbone. They can be found on land or water. 98% are invertebrates while 2% are vertebrates.
Mammals are vertebrates and humans are the most common mammals on Earth. Radial symmetric does not possess left and right sides. An example is a jellyfish.
Answer - Option 4 - Invertebrate
Answer: Option C
Explanation:
The lymphatic system can be defined as a system of network of tissues and organs that helps the body to clean toxins and other materials of the body that is not required.
The main function of the lymph is to transport lymph, which is a fluid that helps in fighting with infection.
The pathway that is followed by the lymphatic system inside the body is lymph nodes→ lymph vessels→lymph capillaries→ subclavein veins.