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99 Cards in this Set
- Front
- Back
Holding your breath for an extended period of time results in |
respiratory acidosis |
|
During the menstrual cycle, progesterone isproduced by
|
the corpus luteum |
|
Which of the following help move the oocyte into and through the uterine tube?
|
cilia |
|
Leydig cells are located
|
in the spaces between adjacent seminiferous tubules |
|
Sperm production in the male requires a scrotal temperature that is
|
lower than body temperature |
|
The secretory cells of an ovarian follicle are called the
|
theca interna |
|
How many pairs of autosomes does a normal human have? |
22 |
|
Implantation usually occurs in the |
posterior wall of the body or fundus of the uterus |
|
The area that stimulates the conscious desire to drink water is located in the |
hypothalamus |
|
During early pregnancy, the main function of hCG is to |
maintain the corpus luteum |
|
The extraembryonic coelom becomes the |
amniotic cavity |
|
The glycoprotein layer between the oocyte and the granulosa cells of an ovarian follicle is called the |
zona pellucida |
|
The endometrium is digested by enzymes released from the
|
trophoblast |
|
During the menstrual cycle, progesterone would be at its highest levels
|
late in the postovulatory phase |
|
The main control center of the female reproductive system is the
|
hypothalamus |
|
The normal number of spermatozoa per milliliter of semen is
|
50,000,000-150,000,000 |
|
The cells that result from the equatorial division of spermatogenesis are called
|
spermatids |
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Early pregnancy tests are based on detection of what substance in the urine?
|
hCG |
|
Bicarbonate ion acts as a
|
weak base |
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Which of the following has occurred by the end of the first month of development?
|
The heart has formed and begun beating.
The placenta has developed. The eyes have formed and are open. Ossification has begun. Urine has begun to form. |
|
The chorion develops from the
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trophoblast |
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The female structure that is homologous to the scrotum is the
|
labia majora |
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The form (stage) of developing male gamete located nearest to the basement membrane of a seminiferous tubule is the
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spermatogonium |
|
During the menstrual cycle, LH is at its highest levels
|
just prior to ovulation |
|
The acrosome of a sperm cell contains
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hyaluronidase for egg penetration
|
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The immune system does not normally attack spermatogenic cells because
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spermatogenic cells are protected by the blood-testis barrier.
|
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The carboxyl group of an amino acid acts as a buffer for
|
excess hydroxide ions |
|
The term capacitation refers to
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functional changes that sperm undergo in the female reproductive tract that allow them to fertilize the secondary oocyte.
|
|
A person is heterozygous for a particular trait if he/she has
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one dominant allele and one recessive allele for the trait
|
|
The corpus luteum produces |
progesterone |
|
Interstitial cells (of Leydig) |
secrete testosterone |
|
Human chorionic gonadotrophin is produced by the |
corpus luteum |
|
Drinking plain water after excessive sweating leads to |
water intoxication |
|
Seminal vesicles produce |
fructose- rich fluid |
|
Levels of sodium ions in the extracellularfluid are regulated primarily by |
aldosterone |
|
Most materials cross placenta by |
diffusion
|
|
The primary intracellular ions are |
sodium and chloride ions |
|
At day 4 after fertilization, the solid ball of cells that has formed is called the
|
morula |
|
The cation that is necessary for generation and conduction of action potentials and that contributes nearly half of the osmotic pressure of extracellular fluid is |
sodium ion |
|
Most pregnancy tests are based on the presence or absence of
|
human chorionic gonadotropin (hCG) |
|
Hyperventilation results in
|
respiratory alkalosis |
|
Deoxygenated fetal blood is carried to the placenta via the
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umbilical arteries |
|
Hemoglobin picks up a hydrogen ion when
|
it releases oxygen to tissues.
|
|
Teratogens are |
agents that induce physical defects in developing embryos
|
|
The female structure that is homologous to the penis is the
|
clitoris |
|
In the male, LH causes |
testosterone production |
|
Onset of puberty in both sexes is signaled by increases in levels of |
LH |
|
The “water” referred to when a woman's “water breaks” prior to delivery is
|
amniotic fluid released when the amnion ruptures
|
|
When bicarbonate ion diffuses out of red blood cells into plasma, it is usually exchanged with which anion?
|
chloride |
|
The function of fructose in semen is to |
provide an energy source for ATP production by sperm
|
|
A pH of 6.5 is said to be
|
acid |
|
A normal mature human spermatozoa conains |
23 chromosomes |
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A couple who are both phenotypically normal have a child who expresses a sex-linked recessive trait. Which of the following represents this child's genotype? [Let the trait be designated T (dominant) or t (recessive).]
|
tt |
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The epithelium of the vaginal mucosa is
|
stratified squamous |
|
The seminal vesicles are located |
posterior and inferior to the urinary bladder, in front of the rectum |
|
The two alternative forms of a gene that code for the same trait and are at the same locus on homologous chromosomes are called
|
alleles |
|
Sertoli cells produce
|
androgen-binding protein |
|
The oogenesis begins in females |
only if an egg is fertilized |
|
Colostrum is different from true milk because it contains less lactose and virtually no |
fat |
|
Extracellular fluids are |
high in sodium and low in potassium |
|
An individual whose alleles for a particular trait are said to be |
homozygous |
|
The perineum is bounded by the |
pubic symphysis, ischial tuberosities, and coccyx
|
|
The primary means of water movement between fluid compartments is |
osmosis |
|
During spermatogenesis, which of the following undergoes a meiotic division to produce haploid cells
|
primary spermatocytes |
|
By doing karyotyping, one can determine the gender of the child because |
the Y chromosome is much smaller than the X chromosome |
|
The part of the female reproductive system that is shed during menstruation is the |
myometrium |
|
During the menstrual cycle, the endometrium would be at its thickest
|
late in the postovulatory phase |
|
The human gestation period is about |
38 weeks
|
|
The opening between the cervical canal and the uterine cavity is called the |
internal os. |
|
The embryonic period of development covers what time period?
|
the first two months following fertilization
|
|
If a person's phenotype is intermediate between homozygous dominant and homozygous recessive then inheritance of this trait is an example of
|
codominance |
|
The primary determinant of body fluid volume is the |
number of sodium and chloride ions lost from the kidney |
|
If fertilization does not occur, the corpus luteum: |
degenerates into the corpus albicans |
|
The reason the corpus luteum is maintained in early pregnancy is to |
produce ATP for the developing embryo |
|
The process of crossing-over or recombination, of genes occurs during |
Meiosis I |
|
Protein anions are most abundant in |
the cytosol |
|
The observable characteristics of a persons genetic makeup are known as the |
phenotype |
|
The embryonic disc develops from the |
yolk sac |
|
Excessive intake or drinking of water normally leads to |
reduced ADH secretion |
|
Which of the following cells are diploid? |
secondary spermatocytes primary spermatocytes spermatids All of the above except spermatids. secondary oocytes |
|
Testosterone is produced by |
interstitial cells |
|
In studies of fluid balance, the term water intoxication refers to
|
movement of water from interstitial fluid into intracellular fluid due to osmotic gradients created by ion loss
|
|
The folds of the peritoneum attaching the uterus to either side of the pelvic cavity are called the |
broad ligaments |
|
Which of the following statements are correct? |
A strong base plus a weak acid yields a strong acid and a weak base.
A strong base plus a weak base yields a strong acid plus a weak acid. A strong base plus a weak acid yields water plus a weak base. A strong base plus a weak base yields a salt plus a weak base. A strong base plus a strong acid yields a weak base plus a weak acid. |
|
The thirst center is stimulated by ALL of the following EXCEPT |
peripheral chemoreceptors.
angiotensin II. dry mouth. baroreceptors. osmoreceptors in the hypothalamus. |
|
For fertilization to occur, a sperm must penetrate |
zona pellucida |
|
The enzyme that allow implantation to occur are produced by the |
syncytiotrophoblast |
|
The fetus s protected from mechanical injury by fluid contained within the |
amnion |
|
An acid may be defined as |
a donor of hydrogen |
|
How many days after fertilization does implantation of the blastocyte occur? |
6 days |
|
A function of FSH in the male is to |
initiate spermatogenesis |
|
Hypernatremia can be defined as a |
excessive retention of plasma sodium |
|
What event marks the beginning of the stage of expulsion in true labor? |
complete cervical dilation |
|
Final maturation of sperm cells occurs in the |
epididymis |
|
The direction of water movement between fluid compartments is determined by |
the concentration of solutes |
|
The principal androgen is |
testosterone |
|
Inheritance of the ABO blood type is an example of |
codominance |
|
Levels of potassium ions in the extracellular fluid are regulated primarily by |
insulin |
|
Oral contraceptives for women typically contain |
progestin and estrogen |