Bio. 240: Third Test Review

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Bio. 240:  Third Test Review

 

  1. Arrange the following structures in the order sperm would pass through them from the seminiferous tubules to the urethra.

 

  1. Which portion of the sperm cell is most involved with penetration of the female sex cell?

 

  1. The uterus is a target organ of

 

  1. Some ectoderm cells migrate and emerge between ectoderm and endoderm as a new germ layer called the

 

  1. Which of the following is derived from endoderm?

 

  1. Which of the following is derived from mesoderm?

 

  1. Which of the following is derived from ectoderm?

 

  1. The ovaries produce both

 

  1. Which of these hormones helps to prevent spontaneous abortion?

 

  1. Which of these hormones causes enlargement of the vagina?

 

  1. Gestation in human last for ______ days from conception to childbirth

 

  1. Once the fertilized or embryonic mass has 16 or more cells, it is called a

 

  1. The first cleavage that occurs 30 hours after fertilization and produces the first two daughter cells, which are called

 

  1. At the time of implantation, the human embryo is in a stage of development known as

 

  1. Embryoblast and the cells that form the outer wall of the blastocyst make up the

 

  1. An embryo becomes a fetus about _________ weeks after fertilization

 

  1. Fine, downy hair that cover the fetus is called

 

  1. An infant born with a gestational age of 252 days would be considered

 

  1. Hot flashes experienced by menopausal women are thought to be the result of decreased ________ level

 

 

  1. Which of the following fluid compartments contains the largest volume of water?

 

  1. Synovial fluid is a part of which of the following fluid compartments?

 

  1.  Which of the following individuals would have the largest percentage of their bodyweight as water?

 

  1. The predominant extracellular cation is

 

  1. Obese people are as little as 45% water by weight.

 

  1. The contraceptive method in which the penis is removed from the vagina just before ejaculation is called

 

  1. Which of these hormones inhibits contractions of uterine muscles?
  1. FSH B.   LH        C.    HCG     D.   Estrogen     E.   Progesterone

 

  1. The LH surge initiates

 

  1. One hormone responsible for maturation of follicles is

 

  1. The hypothalamic hormone that regulates both male and female reproductive cycle is

 

  1. The interstitial cells or Leydig cells

 

  1. The sertoli cells

 

  1. Which of the following cell types is diploid?

 

  1. Most sperm are fertile for up to _____ hours within the female reproductive tract

 

  1. The ovum is viable for ______ hours following ovulation

 

  1. Erection of the penis occurs when

 

  1. For the sperm to fertilize an egg, it may require hundreds of sperm to clear a path for the one that penetrates the egg proper.

 

  1. GnRH is released from only female hypothalamus.

 

  1. Most of a female’s egg degenerates before she is born.

 

  1. The male scrotum is homologous to female clitoris.

 

  1. The predominant intracellular cation is

 

  1. One difference between the plasma and interstitial fluid is that the plasma has significantly more ___________ than interstitial fluid

 

  1. Antidiuretic hormone (ADH)

 

  1. Both potassium and sodium levels in the body are regulated by

 

  1. Ms. Wilson working in the hot sun loses the greatest amount of water from the

 

  1. Which of the following substances releases H+ into a solution

 

  1. Which of the following substances binds to H+ and remove them from solution

 

  1. Chemicals that function to resist changes in the pH of body fluids are called

 

  1. The acidity of the vagina would be harmful to sperm if it were not neutralized by the semen.

 

  1. The fist sperm cell to reach an egg cell is the one that fertilizes it. True ( A ) or False ( B )

 

  1. Sex cells with half of the amount of genetic material of other cell types are said to be

 

  1. The location of the testes and epididymides in the scrotum

 

  1. Optimum temperature for sperm production is 2 to 3OC cooler than body temperature. In which of the following locations would the testes produce the most sperm?

 

  1. Sperm are produced in the

 

  1. Which of these is not a secondary sex characteristic?

 

 

  1. _______ period, which begins with fertilization of an egg cell and ends at birth is called

 

  1. Male and female gonads are

 

  1. Formation of organs and organ systems from the primary germ layers is called

 

  1. Which is the function of the chorion)?

 

  1. The predominant extracellular cation is

 

  1. One difference between the plasma and interstitial fluid is that the plasma has significantly more ___________ than interstitial fluid

 

  1. Water moves back and front across the plasma membrane by the process of

 

  1. The cation that plays a major role in determining the osmotic pressure of the plasma is
  1. K+ B.  H+      C.   Na+     D.   Ca2+     E.   Cl–

 

  1. The major route of excretion for sodium ions(under normal condition) is the

 

  1. Water output is regulated by ______________ hormone

 

  1. Which of the following cations are regulated by the hormone Aldosterone?

 

  1. The osmoreceptor-Antidiuretic hormone mechanism can reduce a normal urine production of 1,500 ml per day to about ___ ml per when the body is dehydrated

 

  1. Which is not a source of electrolyte?

 

  1. The greatest amount of water is lost through the _________

 

  1. Under normal conditions, most water loss from the body is through the

 

  1. Ms. Ramroop working in the hot sun loses the greatest amount of water from her

 

  1. Which of the following substances releases H+ into a solution

 

  1. Which of the following substances binds to H+ and remove them from solution

 

  1. The normal pH for blood plasma is

 

  1. The york sac contributes to the formation of

 

  1. The embryonic membrane that completely encloses the embryo in watery sac is the

 

  1. The accessory organ of the fetus that gives rise to the umbilical arteries and veins

 

  1. Which of the following is a function of the vagina?

 

  1. The external genitalia of the female are collectively called the

 

  1. The structure much like a miniature penis in female and serve as the primary center of erotic stimulation is the

 

  1. Puberty in a female is characterized by

 

  1. Which is not the characteristic of puberty in a male?

 

  1. Crptorchidism

 

  1. The contraceptive that not only prevents fertilization but also provides protection against sexually transmitted diseases is

 

  1. The hormone human chrionic gonadotropin (HCG) secreted by

 

  1. The ovarian follicles become less sensitive to FSH and LH. The levels of estrogen and progesterone decrease, while the levels of FSH and LH increase. This describes

 

  1. During the female sex act,

 

  1. The inorganic compound, which dilates the arteries leading into penis, increasing blood flow into erectile tissues is called

 

  1. The female reproductive develops because of the absence of