#1
What is the primary function of the perineum?
Reproduction
ExplanationFacilitates reproductive processes.
#2
Which nerve supplies motor innervation to the external anal sphincter in the perineum?
Pudendal nerve
ExplanationControls motor function of anal sphincter.
#3
What is the function of the perineal raphe in the perineum?
Marks midline fusion during development
ExplanationIndicates fusion during embryonic development.
#4
Which nerve supplies sensory innervation to the posterior scrotum in males?
Genitofemoral nerve
ExplanationProvides sensory innervation to posterior scrotum.
#5
The ischioanal fossa is separated from the pelvic cavity by which muscle in the perineum?
Levator ani
ExplanationForms boundary between ischioanal fossa and pelvic cavity.
#6
Which muscle forms the posterior boundary of the perineum?
Levator ani
ExplanationForms the posterior boundary and provides support.
#7
The perineum is divided into two triangles by which imaginary line?
Ischial tuberosities
ExplanationDivides perineum into urogenital and anal triangles.
#8
Which artery is a major blood supply to the perineum?
Internal pudendal artery
ExplanationSupplies blood to perineum and external genitalia.
#9
What is the primary function of the bulbospongiosus muscle in the male perineum?
Facilitates ejaculation
ExplanationInvolved in ejaculation and expulsion of semen.
#10
What is the primary role of the ischiocavernosus muscle in the male perineum?
Facilitates erection
ExplanationInvolved in maintaining and enhancing erection.
#11
Which nerve is responsible for the sensory innervation of the perineum?
Pudendal nerve
ExplanationSupplies sensory innervation to perineal region.
#12
What is the significance of the perineal body in the perineum?
It provides structural support
ExplanationMaintains structural integrity and support.
#13
Which structure marks the posterior limit of the urogenital triangle in the perineum?
Ischial tuberosity
ExplanationForms posterior boundary of urogenital triangle.
#14
What is the role of the perineal membrane in the female perineum?
Supports pelvic organs
ExplanationProvides support for pelvic organs and structures.
#15
What is the primary function of the anal triangle in the perineum?
Defecation
ExplanationInvolved in elimination of waste materials.