PSYC 3533 Lecture Notes - Lecture 5: Seminiferous Tubule, Cremasteric Reflex, Corpus Spongiosum Penis

• School: Memorial University
• Department: Psychology
• Course: PSYC 3533
• Professor: adambrown

Document Summary

The penis contains 3 long cylinders of spongy tissue running parallel to the urethra: corpora cavernosa: the two spongy bodies on top, corpus spongiosum: the single one on the bottom (holds the urethra) Erection is purely a vascular phenomenon, relying on blood flow. There are no bones in the human penis. The skin on the penis is usually hairless and loose: permits expansion during erection, the foreskin covers the glans. The average non-erect penis is between 2-4 inches long. When erect the average penis is about 6 inches. There is much less variation in penis size when erect compared to non-erect. Circumcision: is the surgical removal of the foreskin. About 30% of males worldwide are circumcised. Varies from country to country, and in different cultures. Maybe done for religious reasons: ex. Anti-(cid:272)ir(cid:272)u(cid:373)(cid:272)isio(cid:374) (cid:373)o(cid:448)e(cid:373)e(cid:374)t i(cid:374) (cid:1005)(cid:1013)(cid:1012)(cid:1004)"s i(cid:374) north a(cid:373)eri(cid:272)a: no (cid:373)edi(cid:272)al (cid:271)e(cid:374)efits, does(cid:374)"t (cid:272)ause redu(cid:272)ed sensations, etc.