Which sphincter is under voluntary control?
A. External urethral sphincter
B. Internal urethral sphincter
Answer: A
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What type of muscle contraction is employed by the elbow flexors when slowly lowering your backpack to your desk?
A. concentric B. eccentric C. isometric D. isokinetic
The withdrawal reflex is an example of what reflex category?
a. innate reflex b. conditioned reflex c. somatic reflex d. arm reflex e. spinal reflex
The result of infection with poliovirus is paralysis of the muscles innervated by the affected neurons
a. True b. False Indicate whether the statement is true or false
Beta cells of the pancreatic islets produce a hormone known as ________ while the alpha cells produce a hormone known as ________
A) insulin; glucagon B) glucagon; insulin C) cortisol; glucagon D) epinephrine; cortisol