UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
Chromosomes consist of - ANSWER long strands of tightly coiled DNA.
The genetic information in male offspring is: - ANSWER inherited from both the father and the mother.
Female offspring result when: - ANSWER a sperm with an X chromosome fertilizes the egg.
An alternative form of a gene is called: - ANSWER an allele.
Which of the following statements about alleles is correct? - ANSWER An individual may have two alleles
that are the same or two alleles that are different.
Which of the following statements about sex-linked inheritance is correct? - ANSWER Almost all of the
sex-linked traits are carried on the X chromosome and are recessive.
Most common chromosomal abnormalities result when: - ANSWER homologous chromosomes fail to
separate during
meiosis.
The fertilized egg is at which stage when it implants in the uterus? - ANSWER Blastocyst
How long can sperm remain viable within the female reproductive tract? - ANSWER As long as 6 days
,UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
What is the significance of the embryotic disc? - ANSWER It gives rise to the three germ layers.
Which is a function of the yolk sac? - ANSWER Supply the fetus with nutrients
During the first 2 months of pregnancy, what is the source of estrogen and progesterone? - ANSWER
Corpus luteum
During which stage of pregnancy is the developing fetus most vulnerable to toxins, stress, drugs, and
nutritional deficiencies? - ANSWER First trimester
What is the function of the foramen ovale? - ANSWER Divert blood from the right to the left atrium
Fertilization normally occurs in the: - ANSWER fallopian tube.
At which point is the product of conception called a fetus? - ANSWER After the organs are formed
Which hormone is responsible for the production of milk in the mammary glands? - ANSWER Prolactin
What characteristic of umbilical cord blood makes it useful in treating certain diseases? - ANSWER It
contains an abundance of stem cells.
The first hormone secreted at the onset of puberty in both males and females is: - ANSWER
gonadotropin-releasing hormone.
Gametes are: - ANSWER sex cells.
Until ejaculation, sperm are stored in the: - ANSWER epididymis.
, UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
Where is testosterone produced? - ANSWER Interstitial cells of the testes
Which organ supplies most of the fluid volume of semen? - ANSWER Seminal vesicles
The surge in which hormone causes ovulation? - ANSWER Luteinizing hormone
An embryo attaches to which layer of the uterine wall? - ANSWER Endometrium
Falling levels of which two hormones trigger menstruation? - ANSWER Estrogen and progesterone
The structure that secretes progesterone during the last half of the ovarian cycle is the: - ANSWER
corpus luteum.
Birth control pills prevent pregnancy by: - ANSWER interfering with follicular development and
ovulation.
Which statement about basal metabolic (BMR) rate is accurate? - ANSWER A person's size affects his
BMR.
Which hormone stimulates the appetite? - ANSWER Ghrelin
In the body, what stores the greatest amount of energy in the smallest amount of space? - ANSWER Fat
Nonessential amino acids are: - ANSWER synthesized by the body.
Which of the following is a digestible polysaccharide? - ANSWER Starch
PHYSIOLOGY 268 complete solutions
Graded A+.
UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
Chromosomes consist of - ANSWER long strands of tightly coiled DNA.
The genetic information in male offspring is: - ANSWER inherited from both the father and the mother.
Female offspring result when: - ANSWER a sperm with an X chromosome fertilizes the egg.
An alternative form of a gene is called: - ANSWER an allele.
Which of the following statements about alleles is correct? - ANSWER An individual may have two alleles
that are the same or two alleles that are different.
Which of the following statements about sex-linked inheritance is correct? - ANSWER Almost all of the
sex-linked traits are carried on the X chromosome and are recessive.
Most common chromosomal abnormalities result when: - ANSWER homologous chromosomes fail to
separate during
meiosis.
The fertilized egg is at which stage when it implants in the uterus? - ANSWER Blastocyst
How long can sperm remain viable within the female reproductive tract? - ANSWER As long as 6 days
,UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
What is the significance of the embryotic disc? - ANSWER It gives rise to the three germ layers.
Which is a function of the yolk sac? - ANSWER Supply the fetus with nutrients
During the first 2 months of pregnancy, what is the source of estrogen and progesterone? - ANSWER
Corpus luteum
During which stage of pregnancy is the developing fetus most vulnerable to toxins, stress, drugs, and
nutritional deficiencies? - ANSWER First trimester
What is the function of the foramen ovale? - ANSWER Divert blood from the right to the left atrium
Fertilization normally occurs in the: - ANSWER fallopian tube.
At which point is the product of conception called a fetus? - ANSWER After the organs are formed
Which hormone is responsible for the production of milk in the mammary glands? - ANSWER Prolactin
What characteristic of umbilical cord blood makes it useful in treating certain diseases? - ANSWER It
contains an abundance of stem cells.
The first hormone secreted at the onset of puberty in both males and females is: - ANSWER
gonadotropin-releasing hormone.
Gametes are: - ANSWER sex cells.
Until ejaculation, sperm are stored in the: - ANSWER epididymis.
, UNDERSTANDING ANATOMY &
PHYSIOLOGY 268 complete solutions
Graded A+.
Where is testosterone produced? - ANSWER Interstitial cells of the testes
Which organ supplies most of the fluid volume of semen? - ANSWER Seminal vesicles
The surge in which hormone causes ovulation? - ANSWER Luteinizing hormone
An embryo attaches to which layer of the uterine wall? - ANSWER Endometrium
Falling levels of which two hormones trigger menstruation? - ANSWER Estrogen and progesterone
The structure that secretes progesterone during the last half of the ovarian cycle is the: - ANSWER
corpus luteum.
Birth control pills prevent pregnancy by: - ANSWER interfering with follicular development and
ovulation.
Which statement about basal metabolic (BMR) rate is accurate? - ANSWER A person's size affects his
BMR.
Which hormone stimulates the appetite? - ANSWER Ghrelin
In the body, what stores the greatest amount of energy in the smallest amount of space? - ANSWER Fat
Nonessential amino acids are: - ANSWER synthesized by the body.
Which of the following is a digestible polysaccharide? - ANSWER Starch
