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BIO 202 > EXAM 4 > Flashcards

EXAM 4 Flashcards

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Biology 101 flashcards
1
Q

The ___ is the gonad and the ___ is the gamete

A

Testies: sperm

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2
Q

Which of the following is generally accepted as a secondary sex characteristic

A

The enlargement of breasts

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3
Q

Which of the following are primary sex organs

A

Gonads (testes and ovaries)

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4
Q

Whether an organism will be genetically male or female is determined by

A

The sperm

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5
Q

The gene that codes for the testis determining factor is going on or on the

A

Y chromosome

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6
Q

The penis is homologous to the

A

Clitoris

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7
Q

The __ is an example of the female external genitalia

A

Clitoris

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8
Q

Descent if the testes is stimulated by the

A

Testosterone

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9
Q

The deep region of the penis surrounding the urethra that engorges with blood during an erection is known as the

A

Corpus sponginosum

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10
Q

When it gets cold the ___ contracts and draws the testes closer to the body to keep them warm

A

Cremaster muscle

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11
Q

Which of the following is not a change in the male body that results from puberty

A

These are all changes associated with male puberty

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12
Q

The process of spermatogenesis and spermiogenisis begins with a ____ and ends with four ____

A

Germ cells; gametes

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13
Q

___ have 46 chromosomes whereas ___ have 23

A

Primary spermatocytes; spermatids

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14
Q

Which of the following is not a function of nurse cells

A

Secrete testosterone

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15
Q
  • where do sperm undergo maturation
A

Epididymis

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16
Q

*Where is testosterone produced in the testis

A

Leydig cells between the semi ferrous tubules

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17
Q
  • Which structure is generally cut to sterilize a male
A

Vas deferens

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18
Q

*Which structure enlarged as men get older

A

Prostate

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19
Q

*Which structure produces fructose used to power sperm flagella

A

The seminal vesicles

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20
Q

*Which structure produced a pre-ejaculate fluid

A

Cowpers gland

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21
Q

Which of the following is a part of internal female genitalia

A

vagina, cervix, uterus, fallopian tubes, and ovaries

22
Q

In which structure does fertilization us usually occur

A

Urtine tube

23
Q

What structure leads from each ovary to the uterus

A

Uterine tubes

24
Q

Which of the following is not a component of the vuvla

A

Cervix or vestibule vestibule

25
Q

where does an embryo usually attach to its mother?

A

the endometrium

26
Q

what provides the most natural lubrication during female sexual excitement

A

greater vestibular ( Bartholin) glands

27
Q

what is the earliest sign of puberty in girls

A

breast development

28
Q

which of the following is considered a feminizing hormone

A

estrogen

29
Q

what is the cessation of menstruation referred to as

A

menopause

30
Q

when does oogenesis begin

A

before being born
During embryonic development

31
Q

what hormones inhibit the secretion of FSH and LH during the female sexual cycle

A

Estradiol and progesterone

32
Q

which of the following occurs during the proliferative phase of the menstrual cycle

A

several follicles are developing an anthem

33
Q

name the indicated phase of the menstrual cycle
( what are the phases of menstrual cycle)

A

Follicular (before release of the egg) Ovulatory (egg release) Luteal (after egg release)

34
Q

what is the second phase of the menstrual cycle

A

the follicular stage

35
Q

what is the third phase of the menstrual cycle

A

luteal

36
Q

what is the first phase of ovarian cycle

A

the follicular stage

37
Q

what is the second phase of the ovarian cycle

A

ovulation

38
Q

which of these blood hormone levels reaches its maximum during the luteal phase

A

progesterone

39
Q

the process that makes it possible for sperm to penetrate the egg is called

A

capacitation

40
Q

regarding fertilization, which of the following events happens first

A

the acrosomal reaction

41
Q

the optimal window of opportunity to conceive a child is

A

a few days before ovulation to less than a day after

42
Q

out of 300 million ejaculated sperm, only about ___ reach the vicinity of the egg

A

(range) 3000

43
Q

which of the following lists the stages or structures of prenatal development in the correct order

A

zygote, cleavage, morula, blastocyte, embryo, fetus

44
Q

the spheroidal stage of early prenatal development with about 16 to 64 cells is called a(n)

A

morula

45
Q

twins produced when a single egg is fertilized are called ___ twins. twins produced from two eggs ovulated at the same time are called ___ twins

A

monozygotic;dizygotic

46
Q

In the blastocyst, the trophoblast will become _________, whereas the embryo blast will become ________.

A

part of the placenta; the embryo

47
Q

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

A

placenta

48
Q

where are follicles located

A

surrounding the tunica albuginea or cortex of the ovary

49
Q

which hormone acts primary on the uterus

A

progesterone

50
Q

describing development of external genitalia in the female fetus

A

The absences of testosterone causes fetus to develop female genitalia (T)

51
Q

describe the function of hcg

A

True

52
Q

describing the function of progesterone

A

BIO 202 (8 decks)

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