QuestionSBA
QuestionChoice
Helicine arterioles do provide some of the blood supply to the male penile erectile tissue, but they are dilated upon parasympathetic stimulation.
10027135
e
Penile erectile tissue is supplied by the helicine arterioles, which are dilated upon sympathetic stimulation
QuestionChoice
The bulbospongiosus muscle is a striated muscle covering the penile erectile tissue. It acts to empty the penile urethra during ejaculation and is supplied by the pudendal nerve.
10027131
a
The bulbospongiosus muscle, a striated muscle covering the penile erectile tissue, is supplied by the pudendal nerve
QuestionChoice
The testes are covered by the tunica vaginalis, a layer of peritoneum, and tunica albugina, a fibrous outer layer. This double layer provides lubrication, enabling the testes to move around.
10027132
b
The testes are covered by the tunica albugina, a layer of peritoneum, and tunica vaginalis, a fibrous outer layer
QuestionChoice
The dartos muscle in the layer surrounding the testes consists of sympathetically innervated smooth muscle which contracts in the cold, making the scrotum smaller to conserve heat. The cremaster muscle is a layer of striated muscle surrounding the spermatic cord, acting to raise the testis when cold.
10027133
c
The cremaster muscle consists of sympathetically innervated smooth muscle, which contracts in the cold to decrease the size of the scrotum
QuestionChoice
The sensory supply to the scrotum is provided by 4 nerves: the anterior scrotal nerves supply the anterior surface and root of the penis, the posterior scrotal nerves supply the posterior surface, part of the anterolateral surface is supplied by the genitofemoral nerve and perineal branch of the posterior femoral cutaneous nerve supplies part of the inferior surface.
10027134
d
The sensory supply to the scrotum is entirely provided by the pudendal nerve
Concept
Chapter
2693
5957
Penile erection
Topic
175
Reproductive Physiology
17824
Which statement regarding the anatomy of the male genitalia is correct?
a