Nanotechnology offers the means to target chemotherapies directly and selectively to cancerous cells and neoplasms, guide in surgical resection of tumors, and enhance the therapeutic efficacy of radiation-based and other current treatment modalities.
Answer:a positive feedback
Explanation: positive feedback is a type of feedback mechanism employed by the body,in which an output is enhanced or acclerated.
In contrast to negative feedback where the body regulates it's internal conditions by reducing the effect of a stimuli,In positive feedback ,the body enhances the effect of the stimuli.
It is not common as negative feedback in homeostasis.
An example is the increasing release of oxytocin to promote contractions during childbirth,until the child is born.
Another example is the accumulation of blood platelet , in the site of blood vessels injury to
cause blood clotting.
Answer:
The <u>pituitary</u> gland controls water balance, growth and blood pressure.
Explanation:
The pituitary gland is also called hypophysis, and is a small gland located in the skull that is responsible for secreting hormones and coordinating the activity of other glands.
Hypophysis is usually divided into two portions, adenohypophysis or anterior lobe and neurohypophysis in posterior lobe. Among other functions, the pituitary gland is in charge of
- Water balance and blood pressure, through the antidiuretic hormone or ADH secreted by the neuro-pituitary.
- Growth, through the secretion of growth hormone or GH, secreted by the somatotropic cells of the adenohypophysis.
This gland is also responsible for the secretion of oxytocin and other hormones in charge of regulating endocrine glandular activity.
Regarding the other options:
- <u><em>Thymus</em></u><em> is a gland present in children and related to immune function.
</em>
- <u><em>Thyroid</em></u><em> is responsible for secreting hormones that control basal metabolism.
</em>
- <u><em>Pancreas</em></u><em> has exocrine and endocrine function, producing digestive enzymes and insulin and glucagon, respectively.
</em>
