Bone marrow contains blood I think, so it would be considered a donor procedure since you're donating blood.
In my opinion, the best answer among the choices listed is option B. Bioflavonoids are naturally occurring plant chemicals. From, the name "bio", these substances most likely comes from living organisms. Flavonoids that come from living organisms. Bioflavonoids are found in the rind of green citrus fruits and in rose hips.
Answer:
If you are referring to digestion...
Well your body cannot take in food as is because your body cannot absorb it. What digestion does is it actually picks out what the body can take in and gets rid of everything else that cannot pass through the mucosa (lining of the digestive tract).
Aside from this, your body actually uses food as a source of nutrients that are needed for your different cells to function. So the digestive system transforms it into a form that the cells of your body can use to perform their function. Many of these nutrients are used for not only maintaining the organs but for repair and replacement too.
Antidepressants are the most common medications prescribed to treat PTSD. Antidepressants make your brain release more serotonin and other 'feel good' chemicals that is in your brain's reward system. This is also released during things like eating your favorite food, Sexual relations, and exercise.
Examples of these are:
Zoloft
SSRI
Paxil
and much more...
I hope this helped. Have a great night!