Reproductive system

1,047 views

Published on

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,047
On SlideShare
0
From Embeds
0
Number of Embeds
12
Actions
Shares
0
Downloads
30
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Reproductive system

  1. 1. Reproductive System Male and female Produce offspring
  2. 2. Male reproductive system <ul><li>Testes </li></ul><ul><ul><li>Primary sex organ </li></ul></ul><ul><ul><li>Surrounded by scrotum </li></ul></ul><ul><ul><li>Produce sperm </li></ul></ul><ul><ul><ul><li>Haploid </li></ul></ul></ul><ul><ul><ul><li>Head with chromosomes is the only part that penetrates egg </li></ul></ul></ul><ul><ul><li>Secrete testosterone </li></ul></ul>
  3. 3. Other organs <ul><li>Epididymis </li></ul><ul><ul><li>Small threadlike tube on the outside of the testis </li></ul></ul><ul><ul><li>Immotile sperm mature and grow their flagella here </li></ul></ul><ul><li>Vas Deferens – tube that connects epididymis to the urethra </li></ul>
  4. 4. <ul><li>Seminal vesicle </li></ul><ul><ul><li>Adds fluid with an alkaline pH </li></ul></ul><ul><ul><li>Adds fructose for food for the sperm </li></ul></ul><ul><li>Prostate gland </li></ul><ul><ul><li>Adds an additional alkaline secretion </li></ul></ul><ul><li>Bulbourethral gland </li></ul><ul><ul><li>Secretes a mucus like fluid that is added </li></ul></ul><ul><li>Semen – the combination of the sperm and all the fluids added to it that the urethra conveys out of the body </li></ul>
  5. 5. Penis <ul><li>Contains urethra </li></ul><ul><li>Cavernosa tissues become engorged with blood, cause it to become erect </li></ul><ul><li>Glans penis is the tip which contains most of the sensory nerve endings </li></ul><ul><li>Foreskin which covers the glans is often removed at birth - circumcision </li></ul>
  6. 6. Male secondary sex characteristics <ul><li>Body and facial hair </li></ul><ul><li>Voice becomes lower as vocal cords thicken </li></ul><ul><li>Skin thickens </li></ul><ul><li>Muscular growth increases </li></ul><ul><li>Bones thicken </li></ul>
  7. 7. Female reproductive system <ul><li>Ovaries </li></ul><ul><ul><li>Primary sex organ </li></ul></ul><ul><ul><li>Follicles contain maturing eggs </li></ul></ul><ul><ul><li>Ovulation – release of egg </li></ul></ul><ul><ul><li>Secrete estrogen and progesterone </li></ul></ul><ul><li>Fallopian tubes (oviducts, uterine tubes) </li></ul><ul><ul><li>Egg travels down these toward the uterus </li></ul></ul><ul><ul><li>Fertilization actually happens here </li></ul></ul><ul><ul><li>Ectopic pregnancy – egg implants outside the uterus </li></ul></ul>
  8. 8. Uterus <ul><li>Muscular organ where fertilized egg implants </li></ul><ul><li>Has a blood rich lining to support the fetus </li></ul><ul><li>Starts out the size of a pear, but can grow 20 times its original size </li></ul><ul><li>Lower end is the cervix, extends into vagina </li></ul>
  9. 9. <ul><li>Vagina </li></ul><ul><ul><li>Fibromuscular tube that receives the penis and semen, also the birth canal </li></ul></ul><ul><li>Labia (lips) external fleshy genitalia </li></ul><ul><ul><li>Labia majora – encloses and protects other organs, </li></ul></ul><ul><ul><li>Labia minora – flattened longitudinal folds along the edge of the vaginal opening </li></ul></ul><ul><li>Clitoris </li></ul><ul><ul><li>Located anterior to urethral and vaginal openings </li></ul></ul><ul><ul><li>Analogous to penis, same type of erectile tissue and nerve endings </li></ul></ul>
  10. 10. Secondary sex characteristics <ul><li>Development of breasts and mammary glands </li></ul><ul><li>Increased deposition of adipose tissue </li></ul><ul><li>Increased vascularization of the skin, esp during pregnancy </li></ul>
  11. 11. <ul><li>Menstrual cycle – the periodic shedding of the lining of the uterus. 28 day cycle on average </li></ul><ul><li>Menopause – the cessation of menstruation; usually irregular for a few years before it stops completely. Ovulation can be random during this period. </li></ul>

×