. As soon as left ventricular pressure exceeds the pressure in the aorta, the
A. AV valves open.
B. aortic semilunar valve opens.
C. atria pump blood into the ventricles.
D. ventricles pump blood into the atria.
E. pulmonary semilunar valve closes.
B
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What happens to the diffusion rate as the distance increases?
a. speeds up b. no change c. requires more energy d. triggers the membrane to change e. becomes slower
Name the muscles that compose the gluteal group
A) piriformis, superior gemellus, inferior gemellus, quadratus femoris B) gluteus maximus, gluteus medius, gluteus minimus, tensor fasciae latae C) psoas major, iliacus D) gluteus medius, gluteus minimus, obturator internus, obturator externus E) pectineus, gracilis, quadratus femoris, gluteus maximus
The structural and functional unit of all living things is the ________
A) nucleus B) element C) cytoplasm D) cell E) organelle
Changes in the blood concentration of glucose, oxygen, and hydrogen are detected by ________.
A. thermoreceptors B. nociceptors C. chemoreceptors D. proprioceptors E. baroreceptors