Describe the differences in technique used for sample collection of routine venous blood samples and those used for coagulation studies
What will be an ideal response?
Collection of a quality blood sample for coagulation studies requires a clean, atraumatic technique. Inadvertent trauma to vessels or blood during collection will activate the clotting cascade and induce platelet adhesion, thus rendering the sample useless. To minimize trauma, a two-syringe technique is used. This technique involves collecting 1 cc of blood and then exchanging syringes while the needle remains in the vessel. Once the second syringe has been attached to the original needle, the sample is collected.
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Which statement accurately describes the permeability to water of the cell membrane and the capillary wall?
A. Both the plasma membrane and the capillary wall are permeable to water. B. The plasma membrane is permeable to water, but the capillary wall is not. C. The plasma membrane is not permeable to water, but the capillary wall is. D. Neither the plasma membrane nor the capillary wall is permeable to water.
Conscious interpretation of external stimuli
a. is sensation b. rarely occurs c. is perception d. is processed in the diencephalon e. is none of the above
The kidneys are supplied by the ________ arteries.
A. inferior mesenteric B. suprarenal C. lumbar D. renal
Although you get wet while swimming, which tough protein within the skin prevents it from soaking up moisture like a sponge?
A) serous fluid B) melanin C) mucus D) carotene E) keratin