Oxyhemoglobin gives blood a dark maroon color.
Answer the following statement true (T) or false (F)
False
Highly oxygenated blood is brighter in color; venous blood (lower oxygen content) is darker.
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The electrical signal produced by neurons called an __________, is capable of traveling over long distances
Fill in the blank with correct words.
The number of primary oocytes in a female is
a. decreased continually throughout her reproductive life from puberty to menopause b. maintained constant during her reproductive life because those that are lost are continuously replaced by an equal number of new primary oocytes c. increased at the time of menopause d. both a and c e. both b and c
Puberty is initiated when a region of the brain begins secreting
A. follicle-stimulating hormone. B. gonadotropin-releasing hormone. C. luteinizing hormone. D. estrogen or testosterone. E. androgens.
Ovaries are about the size of small grapefruits.
a. true b. false