Which of the following is not a function of spleen?
1. | It acts as a filter of the blood by trapping blood-borne microorganisms |
2. | It acts as a large reservoir of RBCs |
3. | It filters our old RBCs |
4. | It continues to form RBCs for a few years after birth |
What constitutes about 50% of the lymphoid tissue in the human body?
1. | Malt | 2. | Spleen |
3. | Lymph nodes | 4. | Liver |
Small masses of lymphatic tissue found throughout the ileum region of the small intestine are called:
1. | Paneth cells | 2. | Meissener’s Plexus |
3. | Peyer’s patches | 4. | Entero-chromaffin cells |
A normal cellular gene which when altered by mutation can contribute to cancer is called:
1. | Oncogene | 2. | V – Onc |
3. | Neoplastic gene | 4. | Proto-oncogene |
Cannabinoid receptors are principally located in the brain but they also have side effects on:
1. | GIT | 2. | CVS |
3. | Liver | 4. | Lungs |
Cocaine acts through:
1. | Interfering with the action of acetylcholine |
2. | Potentiating catecholamines |
3. | Interfering with the transport of dopamine |
4. | Releasing endorphins and enkephalins |
A tumor that invades surrounding tissues is usually capable of producing metastases, may recur after attempted removal, and is likely to cause death unless adequately treated. Such a tumor is called a:
1. | Benign tumor | 2. | Malignant tumor |
3. | Teratoma | 4. | Secondary tumor |
Cancer detection is mainly based on:
1. | Radiography | 2. | Ultrasonography |
3. | Magnetic resonance imaging | 4. | Histopathology |
HIV selectively infects and destroys:
1. | CD4 T Lymphocytes | 2. | CD8 T Lymphocytes |
3. | T-Suppressor cells | 4. | B-Lymphocytes |
The early screening test for HIV infection is :
1. ELISA
2. Western Blot
3. Culture of HIV
4. Detection of opportunistic infections