Ch 68 Physiology Of Penile Erection And Pathophysiology Of ED Flashcards
(16 cards)
The common penile artery (or penile artery) has three main branches, which of the following is not a branch:
A. Perineal artery
B. Cavernous artery
C. Dorsal artery
D. Bulbourethral artery
A. Perineal artery
The principal constituent/s of the tunica albuginea:
A. Type I collagen
B. Type III collagen
C. Type IV collagen
D. Elastin and collagen (all types) in equal parts
A. Type I collagen
Identify the phases of penile erection and detumescence:
This vein serves as the primary venous drainage of the glans and distal two-thirds of the corpora (corresponding to the pendulous portion of the penis).
A. Deep dorsal vein
B. Cavernous vein
C. Bulbourethral vein
D. Bulbar vein
A. Deep dorsal vein
These veins are compressible veins that drain the corporal bodies. During the early phases of penile erection, these veins are compressed by the corporal sinuses effectively obstructing venous outflow:
A. Emissary veins
B. Corporal veins
C. Cavernous veins
D. Dorsal penile plexus
E. Sinusoidal veins
A. Emissary veins
This is the most common physiologic curvature that occurs in up to 15% of men during erection
A. Upward
B. Downward
C. Left ward
D. Right ward
B. Downward
Label the picture below:
A. Periprostatic plexus
B. Subtunical plexus
C. Retrocoronal plexus
The following is the correct spatial orientation of fibrinous connective tissue bundles in the tunica albuginea:
A. Outer longitudinal, middle oblique layer, inner circular with radial intracavernous pillars absent in the 5 to 7 o’clock positions
B. Outer circular, middle oblique layer, inner longitudinal with radial intracavernous pillars absent in the 5 to 7 o’clock positions
C. Outer circular, middle longitudinal layer, inner oblique with radial intracavernous pillars in the 5 to 7 o’clock positions
D. Outer longitudinal, middle circular layer, inner oblique with radial intracavernous pillars in the 5 to 7 o’clock positions
A. Outer longitudinal, middle oblique layer, inner circular with radial intracavernous pillars absent in the 5 to 7 o’clock positions
The superficial dorsal vein serves as the drainage of the penile skin and subcutaneous tissue, it drains into the:
A. Cavernous vein
B. Internal pudendal vein
C. External iliac vein
D. Saphenous vein
D. Saphenous vein
Of the three corporal bodies, only the paired corpora cavernosa contain spongy vascular tissue, while the ventral corpus spongiosum contains elastic laminar tissue.
A. True
B. False
FALSE
Each corpus cavernosum is a conglomeration of vascular sinusoids, larger in the center and smaller in the periphery. These interconnected sinusoids are separated by smooth muscle trabeculae surrounded by elastic fibers, collaged, and loose areolar tissue. The structure of the corpus spongiosum and glans is similar to that of the corpora cavernosa except that the sinusoids are longer.
This artery is responsible for glans engorgement during erection:
A. Cavernous artery
B. Dorsal penile artery
C. Bulbourethral artery
D. Helicine artery
B. Dorsal penile artery
Accessory arteries from the external iliac, obturator, vesical, and femoral arteries also supply the penis. This occurs in what fraction of men?
A. 10%
B. 20%
C. 33%
D. 66%
C. 33%
The ____ is a brain center that controls sexual motivation; the ____ is involved in the human’s ability to recognize a sexual partner and integrates hormonal and sensory cues.
A. Medial amygdala, medial preoptic area
B. Nucleus paragigantocellularis, periaqueductal gray
C. Stria terminalis, lateral preoptic area
D. Paraventricular nucleus, locus ceruleus
A. Medial amygdala, medial preoptic area
Name the arteries below
