Discuss malaria as a cause of anemia
What will be an ideal response?
Malaria is caused by protozoan parasites introduced into a victim's blood by the bite of a carrier mosquito. These parasites selectively invade RBCs, where they multiply to the point that the mass of malarial organisms ruptures the cells, releasing hundreds of new active parasites that quickly invade other RBCs. As this cycle continues and more erythrocytes are destroyed, the anemic condition progressively worsens and leads to death if not treated. As such, malaria causes hemolytic anemia.
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Which of the following correctly lists the sequence of structures that a cardiac action potential follows in order to excite normal contraction of the heart?
a) Bundle of His, Purkinje fibers, Atrioventricular (AV) node b) Sinoatrial (SA) node, Purkinje fibers, AV node, Bundle of His c) Purkinje fibers, AV node, SA node, Bundle of His d) SA node, AV node, Bundle of His, Purkinje fibers e) Bundle of His, SA node, AV node, Purkinje fibers
The esophagus is a tube that carries food from the mouth to the stomach. It does not secrete any enzymes or absorb any nutrients, but it does need to stand up to significant friction and stress. The type of epithelium most likely lining the esophagus would be:
A) stratified squamous epithelium. B) cuboidal epithelium. C) simple squamous epithelium. D) transitional epithelium. E) simple columnar epithelium.
Which of the following structures is contained within the abdominopelvic cavity?
A. Liver B. Lower esophageal sphincter C. Spleen D. Pancreas E. Superior vena cava
Which of the following is not an accessory organ of the male reproductive system?
A. gonads B. prostate gland C. scrotum D. seminal vesicle