EXAM 4 Flashcards
The ___ is the gonad and the ___ is the gamete
Testies: sperm
Which of the following is generally accepted as a secondary sex characteristic
The enlargement of breasts
Which of the following are primary sex organs
Gonads (testes and ovaries)
Whether an organism will be genetically male or female is determined by
The sperm
The gene that codes for the testis determining factor is going on or on the
Y chromosome
The penis is homologous to the
Clitoris
The __ is an example of the female external genitalia
Clitoris
Descent if the testes is stimulated by the
Testosterone
The deep region of the penis surrounding the urethra that engorges with blood during an erection is known as the
Corpus sponginosum
When it gets cold the ___ contracts and draws the testes closer to the body to keep them warm
Cremaster muscle
Which of the following is not a change in the male body that results from puberty
These are all changes associated with male puberty
The process of spermatogenesis and spermiogenisis begins with a ____ and ends with four ____
Germ cells; gametes
___ have 46 chromosomes whereas ___ have 23
Primary spermatocytes; spermatids
Which of the following is not a function of nurse cells
Secrete testosterone
- where do sperm undergo maturation
Epididymis
*Where is testosterone produced in the testis
Leydig cells between the semi ferrous tubules
- Which structure is generally cut to sterilize a male
Vas deferens
*Which structure enlarged as men get older
Prostate
*Which structure produces fructose used to power sperm flagella
The seminal vesicles
*Which structure produced a pre-ejaculate fluid
Cowpers gland
Which of the following is a part of internal female genitalia
vagina, cervix, uterus, fallopian tubes, and ovaries
In which structure does fertilization us usually occur
Urtine tube
What structure leads from each ovary to the uterus
Uterine tubes
Which of the following is not a component of the vuvla
Cervix or vestibule vestibule
where does an embryo usually attach to its mother?
the endometrium
what provides the most natural lubrication during female sexual excitement
greater vestibular ( Bartholin) glands
what is the earliest sign of puberty in girls
breast development
which of the following is considered a feminizing hormone
estrogen
what is the cessation of menstruation referred to as
menopause
when does oogenesis begin
before being born
During embryonic development
what hormones inhibit the secretion of FSH and LH during the female sexual cycle
Estradiol and progesterone
which of the following occurs during the proliferative phase of the menstrual cycle
several follicles are developing an anthem
name the indicated phase of the menstrual cycle
( what are the phases of menstrual cycle)
Follicular (before release of the egg) Ovulatory (egg release) Luteal (after egg release)
what is the second phase of the menstrual cycle
the follicular stage
what is the third phase of the menstrual cycle
luteal
what is the first phase of ovarian cycle
the follicular stage
what is the second phase of the ovarian cycle
ovulation
which of these blood hormone levels reaches its maximum during the luteal phase
progesterone
the process that makes it possible for sperm to penetrate the egg is called
capacitation
regarding fertilization, which of the following events happens first
the acrosomal reaction
the optimal window of opportunity to conceive a child is
a few days before ovulation to less than a day after
out of 300 million ejaculated sperm, only about ___ reach the vicinity of the egg
(range) 3000
which of the following lists the stages or structures of prenatal development in the correct order
zygote, cleavage, morula, blastocyte, embryo, fetus
the spheroidal stage of early prenatal development with about 16 to 64 cells is called a(n)
morula
twins produced when a single egg is fertilized are called ___ twins. twins produced from two eggs ovulated at the same time are called ___ twins
monozygotic;dizygotic
In the blastocyst, the trophoblast will become _________, whereas the embryo blast will become ________.
part of the placenta; the embryo
the __ begins to develop about 11 days after conception and is the sole source of fetal nutrition from the end of week 12 until birth
placenta
where are follicles located
surrounding the tunica albuginea or cortex of the ovary
which hormone acts primary on the uterus
progesterone
describing development of external genitalia in the female fetus
The absences of testosterone causes fetus to develop female genitalia (T)
describe the function of hcg
True
describing the function of progesterone
