You just ate a huge, delicious breakfast and now are going to head out for your morning run. As you try picking up the pace, you find running to be quite difficult because
A. everywhere in the systemic circuit, blood vessels are constricted.
B. stroke volume is decreased.
C. your heart rate is too high.
D. blood flow to the abdominal organs is dominant.
E. your mean arterial pressure is too high.
Answer: D
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One of the functions of the large intestine is to
A. secrete digestive enzymes. B. absorb ingested water. C. break down hemoglobin. D. regulate the release of bile.
Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel. The defective gate wouldn't always open and close when it should. What functional problems would this cause for the neurons?
What will be an ideal response?
Gastric mixing
a. occurs primarily in the body of the stomach. b. occurs as a result of the stomach's contents being tumbled back and forth in the antrum because of vigorous peristaltic contractions. c. mixes the food with gastric secretions to convert it to a finely divided liquid form known as chyme. d. both (b) and (c) above. e. all of these answers.
The part of a skeletal muscle that is attached to a fixed structure is called the _____.?
A) ?origin B) ?insertion C) ?prime mover D) ?ligament