Food is pushed along the esophagus by rhythmic, muscular contractions called _________
Fill in the blank(s) with the appropriate word(s).
Ans: Peristalsis
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In the body's lever systems, the
A. lever is a pivot point. B. fulcrum is the part being moved. C. joint represents the fulcrum point. D. weight is the muscle mass. E. force or pull is applied by the bone.
The small intestine uses segmentation to mix chyme with digestive enzymes, increase its contact with the mucosa, and propel it forward through the digestive tract.
Answer the following statement true (T) or false (F)
Erythropoiesis
a. is accomplished in the bone marrow upon stimulation by erythropoietin. b. is accomplished in the kidneys in response to reduced O2 delivery to the kidneys. c. refers to increased RBC count. d. refers to RBC destruction. e. none of these answers.
Which type of blood vessels contain valves and what is their function?
What will be an ideal response?