Chapter 8: MALE REPRODUCTIVE SYSTEMNotebook #______

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Introduction

  1. ______: a period of sexual development during which males and females become sexually mature and able to produce children. Between ages 10-15, a male’s hypothalamus gland tells the pituitary gland to send hormones to the two testes.
  2. Name 4 changes that occur to a boy during puberty: ______
    ______

Structure and Function

  1. The ______organs store, nourish, and transport sperm cells.
  2. The ______organs produce, store, and release sperm.

Testes/Testicles

5. Very early in prenatal life, special sex cells are set aside from other body cells. These organize into a group of cells known as ______which eventually develop in the male as the testes.

6. The testes have two functions. They produce the male sex hormone= ______. This hormone is responsible for maturing the reproductive organs and for the development of a male’s secondary sexual characteristics (facial hair, body hair, deep voice, etc.)

  1. The testes also produce ______. This is the male sex cell.

Scrotum

  1. The testes hang outside the body within a sac called the ______.
  2. The temperature in the scrotum must be ______than body temperature for sperm to form and survive. Muscles in the scrotum move the testes closer or farther away from the body to maintain this temperature.

Epididymis

  1. This is located on the ______of each testis.
  2. Sperm are stored here for ______to ______days.

Vas Deferens

  1. This serves as a tube that leads from the epididymis to the urethra. It serves as a passageway for sperm.
  2. ______: a form of male sterilization where the vas deferens are cut and tied to prevent sperm from meeting the egg. It is a permanent form of birth control.

Urethra

  1. The urethra is a tube that carries ______and ______from the body. It is a passageway located within the penis. During an erection, the bladder is closed so that no urine will be eliminated during an ejaculation.

Seminal vesicle

  1. This organ creates a fluid that provides ______for active sperm. It makes up the majority of semen.

Cowper’s Gland

  1. The fluid from this organ ______the urethra. It is sometimes called ______fluid. It ______the acid of the urethra.

Prostate Gland

  1. The fluid from the prostate gland ______the sperm as it travels in the female reproductive tract. It neutralizes the acid of the vagina. It is also a frequent cancer site in the older male.

Penis

  1. The penis is the external sex organ through which sperm leave the body.
  2. The tip of the penis is known as the ______. It is covered by a

______.

  1. ______= is the removal of the foreskin. Give 2 reasons

to have it done: ______

Bladder

  1. This organ stores urine. It receives urine from the kidneys through the ureter tube.

Other Terminology

  1. ______=a condition in which the penis becomes larger and firm.
  2. ______=fluid that is released from the erect penis during an ejaculation. It is made up of : ______

______

  1. ______=ejection of semen from the penis.
  2. An ejaculation contains about ______sperm cells.
  3. Once a male reaches puberty, ______of sperm are produced

daily.

  1. ______=an erection and ejaculation during sleep. It is also called a ______.
  2. The lifespan of a sperm cell once it leaves the penis is ______.
  3. There are two sperm types. They are labeled as _____ and ______. An egg cell is labeled as _____. If an X sperm cell unites with the egg, a ______baby will occur. If a Y sperm cell unites with the egg, a______baby will occur.
  4. ______=the union of sperm and egg in order for reproduction to occur. This is also called conception.

31. ______=is when a person is unable to reproduce. Some causes are the environment, stress, drugs, the mumps, etc.