The reduced estrogen levels found in postmenopausal women are responsible for the onset of physical changes that affect the skeleton, called ________.
Fill in the blank(s) with the appropriate word(s).
osteoporosis
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Radioactive isotopes have stable nuclei
Indicate whether the statement is true or false
Normally the most common type of leukocyte in a blood sample is the
________________ . Fill in the blank(s) with correct word
During the defecation reflex, the
A) stretch receptors in the rectal walls stimulate parasympathetic motor neurons. B) internal and external anal sphincters relax simultaneously. C) abdominal wall relaxes and the internal abdominal pressure decreases. D) gastroileal reflex moves materials into the rectum through mass peristalsis. E) decreased peristaltic contractions occur in the sigmoid colon and rectum.
A human body cell normally has 46 autosomes
Indicate whether the statement is true or false