Because of the increased concentration of blood cells in patients with _____, a patient may experience itching and pain in their fingers and toes
A) polycythemia vera
B) sickle cell anemia
C) thalassemia
D) thrombocytopenia
Answer: A
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Pathogens that infect the human body replicate either inside cells (such as viruses) or extracellularly, in the blood or in the extracellular spaces in tissues
A. Identify (i) the class of T cells that are stimulated by intracellular pathogens, (ii) their co-receptor, (iii) the MHC molecule used for recognition of antigen and (iv) the T-cell effector function. B. Repeat this for the classes of T cells that are stimulated by extracellular pathogens. For the purposes of this question, count those pathogens (such as mycobacteria) that can survive and live inside intracellular vesicles after being taken up by macrophages as extracellular pathogens. What will be an ideal response?
A free body diagram includes which of the following?
A. vectors representations of all forces acting on the system B. sketch of an object, body, or body part being analyzed C. both sketch of an object, body, or body part being analyzed and vectors representations of all forces acting on the system D. None of these answers are correct.
An eccentric contraction is
A. the contracting muscle that initiates movement. B. the opposing (relaxing) muscle during muscle contraction. C. a muscle that contracts and shortens as a weight is lifted. D. a muscle that contracts and lengthens as a weight is lowered.
The prostate gland
A. produces part of the seminal fluid. B. is the site of sperm production. C. has no known function in male reproduction. D. secretes a pre-ejaculatory fluid to neutralize the sperm passageway.