A model organism is a species that has been widely studied to understand a particular biological phenomena, normally used because they are easy to breed and maintain in a laboratory setting and has certain experimental advantage.
The criteria that Thomas hunt Morgan was looking for include; the model organism should be small in size, easy to keep in the laboratory and also able to produce large number of off springs in a short time.
1.The hormones of the hypothalamus and the anterior and posterior pituitary gland are antidiuretic hormone and oxytocin and ADH.
<h3>What hormones are produced by the hypothalamus and their functions?</h3>
The hormones produced by the hypothalamus and secreted by the neurohypophysis are antidiuretic hormone and oxytocin. Antidiuretic hormone promotes an increase in urine concentration, as it ensures greater reabsorption of water by the kidneys.
2. The endocrine glands on models are :
- hypothalamus.
- Hypophysis.
- Thyroid gland.
- Parathyroid glands.
- Islet cells of the pancreas.
- Adrenal glands.
- Testicles in men and ovaries in women.
<h3>What are the general characteristics of the endocrine glands?</h3>
The main feature of endocrine glands is the absence of excretory ducts. The service product produced by endocrine cells is transported to the extra diffusion space, reaching the interior of blood vessels.
3. When an imbalance of the endocrine system occurs, it results in Hormonal disorders can be caused by various factors such as diabetes, psychological changes, stress, eating disorders, regular use of medication and cancer.
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Answer:
What the doctor <u>should</u> recommend is: washing hands frequently, especially after touching a lesion
, taking acyclovir for a 6- to 12-month period
, and always wearing a condom when having sexual intercourse. What he <u>shouldn't</u> recommend is taking penicillin daily for the next year.
Explanation:
Genital Herpes is a viral disease that is frequently transmitted through sexual intercourse and causes infected sores, ulcers and cuts.
While the treatment for herpes can reduce the symptoms, the virus remains latent in the body and will most likely re-appear to cause the same symptoms.
Even when inactive, the virus can be transmitted, so the only way to prevent the spread of herpes is by using condoms or dental dams when engaging in sexual relationships.
To treat herpes, the best option is acyclovir -an antiviral-.
Penicillin WOULD NOT WORK because it is an antibiotic and thus it only kills bacteria (not viruses).
