Chapter 09: Environmental

Chapter 09: Environmental

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Which is the most common preventable form of mental retardation in the United States?
2. Fetal rubella infection
3. Fetal toxoplasmosis
4. Fetal alcohol syndrome
5. Fetal cytomegalovirus infection
6. Fetal herpesvirus infection

ANS: C, Fetal alcohol syndrome is the most common preventable form of mental retardation in the United States. It affects 1200 children yearly, but it could be prevented by persuading pregnant women to avoid drinking alcohol during pregnancy.

2. Unopposed exogenous estrogen administration in women after menopause will increase the risk of cancer of which organ?
3. Lung
4. Liver
5. Ovary
6. Cervix
7. Endometrium

ANS: E, Unopposed estrogen administration increases the risk of endometrial carcinoma 5 to 10-fold in postmenopausal women.

3. Lead absorbed from the environment during infancy and childhood is predominantly deposited in which internal organ or organ system?
4. Brain
5. Liver
6. Lungs
7. Bones
8. Skeletal muscles

ANS: D, Lead absorbed from the environment during infancy and childhood is mostly (80%–85%) deposited and stored in the bones.

4. Ingestion of aflatoxin, a toxin from Aspergillus flavus fungi, is accompanied by development of cancer in which organ?
5. Thyroid
6. Lung
7. Liver
8. Colon
9. Endometrium

ANS: C, Aflatoxin is a hepatocarcinogen and is an important cause of liver cell carcinoma in parts of the world, such as Africa.