The organ system that protects the body against infection and disease and aids in returning tissue fluids to the blood stream
A) Muscular
G) Respiratory
B) Reproductive
H) Skeletal
C) Digestive
I) Nervous
D) Cardiovascular
J) Endocrine
E) Integumentary
K) Lymphatic
F) Urinary
K) Lymphatic
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Which of the following best describes how cheetahs are adapted to deal with the heat generated by their extreme sprint speeds?
A. They can store up to 60 times the heat generated at rest, but only for short periods. B. They can store up to 60 times the heat generated at rest for long chases. C. They can store about twice the heat generated at rest for long chases. D. They can store up to 100 times the heat generated at rest, but only for short periods. E. They can store about 20 times the heat generated at rest for long chases.
The most likely identification of an anaerobic gram-positive bacillus that produces spores is:
a. Bifidobacterium. b. Eubacterium. c. Eggerthella. d. Clostridium.
Which of the following is a molecule that stimulates a response in the immune system?
a. MHC class II molecules b. Immunoglobins c. Antigens d. Interferons
Which of the following statements concerning malignant melanoma is false?
a. It is the fastest growing (in number of incidents) form of skin cancer. b. It is the most lethal form of skin cancer. c. It is the third most common form of cancer in humans. d. Its highest incidence is in light-skinned individuals. e. It is caused by excessive exposure to UV irradiation.