Asked by Lauren-Nicole Caday on May 15, 2024
Verified
Which of the following statements concerning the micturition reflex is false?
A) The micturition reflex is initiated by stretching the bladder wall.
B) Afferent signals are conducted to the sacral segments of the spinal cord by the pelvic nerves.
C) Efferent signals are sent to the bladder by sympathetic fibers in the pelvic nerve.
D) The micturition reflex usually produces a series of contractions of the urinary bladder.
E) The micturition reflex is modified by centers in the pons and cerebrum.
Micturition Reflex
A reflex involving the spinal cord and brain that controls the act of urination, or voiding the bladder.
Pelvic Nerves
Nerves located within the pelvic region, involved in controlling the bladder, bowel, and sexual functions.
Sacral Segments
Portions of the spinal cord that correspond to the sacral part of the vertebral column, which is crucial for transmitting nerve signals to and from the lower parts of the body.
- Comprehend the dynamics and regulation of urination, focusing on the nervous system's function and the impact of aging.
Verified Answer
JG
Jamie GovanMay 18, 2024
Final Answer :
C
Explanation :
Efferent signals that stimulate the bladder to contract during the micturition reflex are primarily carried by parasympathetic fibers, not sympathetic fibers. The pelvic nerves, which are part of the parasympathetic nervous system, are responsible for these signals.
Learning Objectives
- Comprehend the dynamics and regulation of urination, focusing on the nervous system's function and the impact of aging.