Why are the two pathways of blood clotting referred to as the extrinsic and intrinsic pathways?
What will be an ideal response
The factors required to initiate clotting are present within the blood in the intrinsic pathway and outside the blood in the extrinsic pathway.
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Each heme ring in hemoglobin encloses an atom of
A) magnesium. B) calcium. C) iron. D) sodium. E) copper.
Factors that aid venous return include all except ________
A) venous valves B) activity of skeletal muscles C) pressure changes in the thorax D) urinary output
Hemoglobin
a. combines preferentially with O2 over any other substance b. is known as carboxyhemoglobin when combined with carbon dioxide c. plays a critical role in determining the amount of O2 exchanged between alveoli and blood d. has characteristics a and c e. has all of the above characteristics
The sacroiliac joint is a joint between the ________ and the ________.
A. ilium; sacrum B. sacrum; coccyx C. acetabulum; femur D. ilium; ischium