Chapter 27

zygote

fertilized egg

primary sex organs

testes in males and ovaries in females

secondary sex organs

males ducts and penis and females uterine tubes and uterus

external genitalia

located in perineum

internal genitalia

inside the pelvic cavity except testes

secondary sex characterisitcs

features that distinguish sexes that develop during puberty

Male and Female secondary sex characterisitics

Male have facial hair and muscular physiques

females have fat distribution and breast enlargement

Herpes

Most common STD containing blisters

Spermatogenesis

division of germ cells into sperm cells

Follicle Stimulating Hormone

stimulate nurse cells to make ABP to produce spermL

Luteinizing Hormone

Stimulate interstitial cells to produce testosterone

Gonadotropin releasing hormone

stimulates FSH and LH

Puberty

beginning of gonadotropin secretion until first ejactulation

Adolescense

period during puberty until person gains full height

libido

sex drive

Benign prostatic hyperplasia

noncancerous enlargement of the prostate causing urine flow obstructions

epididymis

sperm maturation and storage

Scrotum

contain the testes

cremaster

contracts to hold testes closer to body

Dartos fascia

smooth muscle wrinkling scrotum holding testes closer to body

pampinform plexus

countercurrent blood flow removes heat from descending arterial blood to ascending venous blood

seminferous tubules

where sperm is produced

interstitial endocrine cells

produce testosterone

nurse cells

protect germ cells and promote their development

Seminal vesicles

forms 60 percent of semen

Prostate

milky secretion that forms 30 percent of semen

Bulbourethral glands

clear fluid that lubricates tip and protects sperm from acidics

Gonorrhea

pus discharge

Chlamydia

urethral discharge and testicular pain

Syphilis

lesions at site of infection