Where in the body are hemopoietic stem cells found?
A. Yellow bone marrow
B. Thymus
C. Red bone marrow
D. Spleen
E. Liver
C. Red bone marrow
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The macula densa cells respond to ________
A) changes in pressure in the tubule B) aldosterone C) antidiuretic hormone D) changes in Na+ content of the filtrate
Which type of receptor would detect a fly walking on your arm?
A. Mechanoreceptor B. Chemoreceptor C. Photoreceptor D. Nociceptor E. Thermoreceptor
Resting membrane potential is maintained by the sodium-potassium ion pump, or Na+/K+ ATPase, which brings:
A) two potassium ions into the cytosol and two sodium ions into the extracellular fluid. B) three potassium ions into the cytosol and two sodium ions into the extracellular fluid. C) two potassium ions into the cytosol and three sodium ions into the extracellular fluid. D) three potassium ions into the cytosol and three sodium ions into the extracellular fluid.
The foramen ovale connects the middle cranial fossa to the
A. orbit. B. nasal cavity. C. posterior cranial fossa. D. infratemporal fossa. E. pterygopalatine fossa.