The internal urethral sphincter is __ and the external urethral sphincter is ____.
A.under involuntary control; under voluntary control
B. under voluntary control; under involuntary control
C. made of skeletal muscle; made of smooth muscle
Answer: A
The internal urethral sphincter is __ and the external urethral sphincter is ____.
A.under involuntary control; under voluntary control
B. under voluntary control; under involuntary control
C. made of skeletal muscle; made of smooth muscle
Answer: A