A person who goes from sea level to a city that is 5000 feet above sea level will show an increased hematocrit within 2 to 3 days. Draw the reflex pathway that links the hypoxia of high altitude to increased red blood cell production.
What will be an ideal response?
Low atmospheric at high altitude ?low arterial ?sensed by kidney?erythropoietin synthesized and released ? acts on bone marrow to increase production of red blood cells.
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Nonfluent aphasia, due to a lesion in the __________, results in slow speech, difficulty in choosing words, or use of words that only approximate the correct word.
A. primary motor area B. cerebral lateralization C. Broca area D. Wernicke area E. primary auditory area
Which are not spinal nerve branches?
A. Posterior rami B. Rami communicantes C. Anterior rami D. Lateral rami E. No exceptions; all of the choices are spinal nerve branches
The cell is the smallest living portion of the human body
Indicate whether this statement is true or false.
When climbing stairs, which muscles plantarflex your foot?
A) tibialis anterior and extensor digitorum longus B) rectus femoris and sartorius C) gluteus maximus and hamstrings D) gastrocnemius and soleus