QuestionSBA
QuestionChoice
The external urethral sphincter undergoes voluntary relaxation for urine expulsion. The structure here is the bulb of the penis.
10040908
c
Voluntary relaxation of urethra
QuestionChoice
The bulb of the penis is associated with the bulbospongiosus muscle, which aids in emptying the urethra after urination and during ejaculation. It is directly connected to the corpus spongiosum, which surrounds the urethra and engorges with blood during erection, contributing to penile rigidity and thereby aiding erection.
10040906
a
Aids erection
QuestionChoice
The internal urethral sphincter undergoes involuntary relaxation for urine expulsion. The structure here is the bulb of the penis.
10040909
d
Involuntary relaxation of urethra
QuestionChoice
The detrusor muscle of the bladder contracts in micturition to expel urine.
10040910
e
Contraction during micturition
QuestionChoice
The bulb of the penis is associated with the bulbospongiosus muscle, which helps empty the urethra during urination and ejaculation. It is directly connected to the corpus spongiosum, which surrounds the urethra and fills with blood during erection, aiding in maintaining penile rigidity. In short, while the bulbospongiosus muscle does assist with urethral emptying, the bulb of the penis is also an essential part of the erectile mechanism, particularly through its connection to the corpus spongiosum.
10040907
b
Emptying semen and urine from the urethra
Concept
Chapter
2693
6266
Penis
Topic
308
Pelvic anatomy
20480
Picture
3079
34 - Penis (bulb).png
images/c506ismf1727763786557.jpg
images/c506ismf1727763786557_256.jpg
images/c506ismf1727763786557_512.jpg
XxgGDQK9RYSZ94uHU7SZh0mQeQBp
Topic
308
Pelvic anatomy
What is the function of the structure labelled by the blue arrow?
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a