How does the lymphatic system both help and hinder the spread of cancer through the body?
What will be an ideal response?
Lymph nodes help rid the body of cancer cells by immune mechanisms. Lymph vessels may also be used to spread cancer cells throughout the body if immunity is not effective against the cancer cells.
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Effective functioning of which of the following depends on the regulation of the hydrogen ion concentration?
a. cellular enzymes b. antibodies c. hemoglobin d. both A and C above depend on regulation of the hydrogen ion concentration
The buffy coat which represents < 1% of the whole blood is comprised of
a. erythrocytes and platelets. b. leukocytes and platelets. c. leukocytes and clotting factors. d. platelets and clotting factors. e. clotting factors and albumins.
The shape of this muscle gives it its name
A) vastus lateralis B) trapezius C) brachialis D) scalenes
Which of the following structures appears as a large bulge just rostral to the medulla?
A) Medulla oblongata B) Cerebellum C) Pons D) Midbrain E) Hypothalamus