the reproductive system

Question 1

what is the reproductive system and what does it involve

Answer 1

• The reproductive system of an organism is the biological system made up of all the anatomical organs involved in sexual reproduction.
-Many non-living substances such as fluids, hormones, and pheromones are also important
• Sexual reproduction produces new individuals. Gametes (sperm & egg) are formed by testes and ovaries.
-Fertilization produces one cell (a zygote) with one set of chromosomes from each parent. This creates genetic variation

Question 2

Physiology

What is the function of the male reproductive system?

Answer 2

• What is the function of the male reproductive system?

• To produce hormones such as testosterone that maintain male reproductive function and to promote spermatogenesis before transport into the female reprod. System.
• -Spermatogenesis is the process by which sperm develops from germ cells in the seminiferous tubules of the testis.

Question 3

Describe the sperm and outline its function

Answer 3

• The sperm

• Adapted for reaching and fertilizing the female egg.
• Head contains DNA and the acrosome with enzymes for penetrating the egg.
• Midpiece of the sperm contains DNA and the acrosome with enzymes for penetrating the egg.
• Tail is named the flagellum and used for locomotion of the egg.

Question 4

Describe the sperm and outline its function

Answer 4

• The sperm

• Adapted for reaching and fertilizing the female egg.
• Head contains DNA and the acrosome with enzymes for penetrating the egg.
• Midpiece of the sperm contains DNA and the acrosome with enzymes for penetrating the egg.
• Tail is named the flagellum and used for locomotion of the egg.

Question 5

outline semen and its function

Answer 5

• Semen

• A mixture of sperms and seminal fluid. 60% comes from seminal vesicles and 30% from the prostrate gland .
• Semen is slightly alkaline, has milky appearance and sticky texture.
• A typical ejaculate is 3.5 to 5 ml in volume and a normal sperm count is 50 to 150 millions/mL.

Question 6

what are the important male reproductive hormones?

Answer 6

• Hormones work to promote spermatogenesis:
  1) Hypothalamus secretes Gonadotropin Releasing Hormone (GnRH)
  2) The anterior pituitary then secretes Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH).
  3) FSH causes Sertoli cells to secrete Androgen Biding Protein (ABP) and inhibin.
  4) LH causes interstitial cells to secrete testosterone.
  5) ABP and testosterone stimulate spermatogenesis.