How many pairs of spinal nerves are there?
A) 31
B) 8
C) 12
D) 5
A
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The lungs are enclosed in ________ membranes.
A) pleural B) costal C) pericardial D) pulmonary E) thoracic
The sudden death of brain tissue resulting from an interruption in the blood supply is called a ________.
What will be an ideal response?
Which of the following properly describes "mean arterial pressure"?
A) Mean arterial pressure is generated by the closure of the aortic semilunar valve. B) Mean arterial pressure is generated as a result of the force exerted by the stretch and recoil of the arteries. C) Mean arterial pressure is generated as blood is ejected from the left ventricle. D) Mean arterial pressure ensures that blood is pushed from the heart and through the systemic circulation.
Which statement is true about sperm?
A) It is unaffected by acid-base chemistry. B) 98.6 degrees is an ideal temperature for sperm development. C) Low pH environments can be harmful to sperm. D) It is unaffected by temperature.