Oxygen enters the blood from the lungs by facilitated diffusion
Indicate whether the statement is true or false
F
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The hormone oxytocin is synthesized in the
A. anterior pituitary. B. posterior pituitary. C. paraventricular nucleus. D. pineal gland. E. nucleus of the solitary tract.
This foramen lies between the temporal and occipital bones on the inferior surface of the skull. A major vein and several cranial nerves pass through it
A) jugular foramen B) foramen ovale C) foramen magnum D) foramen lacerum
Air consists of about 78.6% nitrogen, 20.9% oxygen, 0.04% carbon dioxide, and 0.5% water. At sea level, (760 mmHg) what is the PCO2?
A) 0.3 mm Hg B) 3.7 mm Hg C) 159 mm Hg D) 597 mm Hg
Cytotoxic T cells ________.
A) are the only T cells that can directly attack and kill other cells B) require the double recognition signal of I MHC plus II MHC on the target cell in order to function C) function mainly to stimulate the proliferation of other T cell populations D) self-destruct once the antigen has been neutralized