Endothelial cells within capillaries of the brain are linked to their neighbors by ________ junctions that prevent diffusion of some substances across the capillary wall.
Fill in the blank(s) with the appropriate word(s).
tight
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Thrombocytopenia is due to a deficiency of
A. vitamin K. B. leukocytes. C. factor VII. D. platelets.
A vesicle is a small, fluid-filled, raised spot on the surface of the skin
Indicate whether the statement is true or false.
An emergency medical technician is examining a trauma victim by shining a pen light into her patient's eye. She records the reactivity of the patents pupils as they constrict when stimulated by the light. This test supports which of the following?
A) The patient has suffered brain damage. B) The patient has function of the trochlear nerve (IV). C) The patient has lost function of the optic nerve (II). D) The patient has function of the oculomotor nerve (III).
In general, ________ have a 2:1 ratio of hydrogen to oxygen.
A. nucleic acids B. carbohydrates C. proteins D. lipids E. enzymes