I see you got the answer already im so sorry for doing this but im answering to get point for my math test. i wish good luck to you and a merry christmas
The animals used in an experiment that involves USDA pain category B, C, and D activities performed on the same animal should be categorized to USDA category D.
The USDA pain categories are used to categorize the level of pain an animal used in testing and research will be exposed to. The categories are as follows:
- USDA B: the animal will not feel pain of any kind
- USDA C: the animal will feel the occasional slight pain
- USDA D: Painful procedures that will be mitigated by pharmaceuticals.
- USDA E: Painful procedures that will not be mitigated.
Category B states the animal will not feel pain. Animals in this category are often used for breeding, which is a natural process that does not cause animal distress or pain.
Animals in category C may feel the occasional slight pain which is allowed to subside naturally without the use of pharmaceuticals. This may include procedures such as
- Drawing blood samples
- Injections
Animals in category D are exposed to painful or stressful procedures and will receive anesthetics and other chemical agents to mitigate or completely relieve the pain, Whereas E category animals do not receive said assistance.
These categories follow a strict rule. Animals must be categorized according to the most painful procedure it will undergo, so because the experiment will use USDA B, C, and D procedures, the animals must be placed into USDA category D.
For more regarding animal testing visit: brainly.com/question/2995484?referrer=searchResults
<span>The phase of mitosis during which the mitotic spindle begins to form is
PROPHASE.
</span>During prophase the nuclear envelope is breaks down and this results in the chromosomes becoming dispersed into the cytoplasm. The chromosomes then condenses and become visible. After all of this, <span>and more importantly,
the mitotic spindle fibers begin to form.</span>
It makes up the Nervous System, if you're asking what it is made up of, Brain: Cerebellum, Cortex, Brain Stem, and Basal Ganglia; The spinal cord is made up of: Vertebrae and cartilage; the parts of the spine are: Cervical, Thoracic, Lumbar, Sacrum, and Coccyx <span />