Which is not a required factor in the intrinsic clotting mechanism?
a. calcium ions
b. factor XII
c. platelet factor 3
d. factor VII
e. factor XI
D
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A champion weight lifter picks up a pencil. A minute later she picks up a sixty-pound object using the same muscles. What was different about the two movements?
Also, what are the differences (at the cellular and molecular levels) in her arm muscles as compared to those of a weaker, untrained person? What will be an ideal response?
Your instructor gives you an unknown organ for you to examine and identify through microscopy. What should you do first with the sample?
A) examine it for artifacts B) fix it with preservative C) cut it into sections D) stain it to enhance contrast
The part of the female reproductive cycle that begins at ovulation and ends at the start of menses is:
a. menarche b. the secretory phase c. the proliferative phase d. menopause
The muscle layer of the heart is the
A) epicardium.
B) myocardium.
C) endocardium.
D) visceral pericardium.
E) parietal pericardium.