Which sphincter is under voluntary control?

A. External urethral sphincter
B. Internal urethral sphincter


Answer: A

Anatomy & Physiology

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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

Anatomy & Physiology

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

Anatomy & Physiology

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

Anatomy & Physiology

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

Anatomy & Physiology