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ANSCI 103 BREEDING AND SELECTION > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

Acts as a funnel to collect ova and divert them to the oviduct

A

Infundibulum

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2
Q

Acts as a POSITIVE FEEDBACK FASHION stimulating the release of luteinizing hormones

A

Estrogen

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3
Q

Primary reproductive organ of female

A

Ovary

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4
Q

It produces hormones, estrogen and progesterone

A

Ovary

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5
Q

Maintenance of pregnancy of animals or hormone for pregnancy

A

Progesterone

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6
Q

It is responsible for maintaining pregnancy and prepares uterus for pregnancy

A

Progesterone

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7
Q

It acts as a site of fertilization

A

Oviduct

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8
Q

Organ of pregnancy

A

Uterus

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9
Q

It is the site of fertilization

A

Ampullary isthmic junction

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10
Q

Ovary is surrounded by a thin membrane called______

A

Infundibulum

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11
Q

Highly developed uterine horns. It distinguished bilateral bifurcation.

A

Bicornuate

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12
Q

Acts as a passageway for sperm to reach the oviduct

A

Uterine horn

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13
Q

It has interdigitating prominences or pulvini

A

Cervix

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14
Q

The barrier from the external environment of cervix

A

Cervical seal

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15
Q

The production of mucus to lubricate the vagina

A

Cervix

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16
Q

It produces prostaglandin f2 alpha

A

Uterine horn

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17
Q

It is necessary for the maturation and estrogen production of the tertiary follicles

It is the estrogen level decreases during the surge and the progesterone level increases

A

Luteinizing hormone

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18
Q

It is secreted by the endometrium of the uterus and also affects structures on the ovary causing the demise of corpus luteum

A

Prostaglandin f2 alpha

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19
Q

This tubules are organized into lobes inside the tubules sperm cells will be formed this tubules are covered by a seminiferous epithelium

A

Seminiferous tubules

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20
Q

It prevents cyclicity acting on the anterior pituitary and a negative feedback fashion therefore decreasing the release of follicle stimulating hormone or luteinizing hormone

It also prepares the uterus for reception of fertilized ova and subsequent pregnancy

A

Progesterone

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21
Q

The expulsion of urine during mixturation or pagpangihi

Passive birth canal during part

A

Vagina

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22
Q

Endocrinology means

A

Study of hormones

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23
Q

These are oval shapes firm and small

A

Ovaries of a sow

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24
Q

This is the cyclical pattern of ovarian activity

A

Estrous cycle

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25
Stimulates the release of luteinizing hormone
Estrogen
26
What are the hormones controlling the estrous cycle
Estrogen Progesterone Gonadotropin releasing hormone Follicle stimulating hormone Luteinizing hormone Prostaglandin f2 alpha
27
This is the remnants of the graffian follicle after it has released the egg are known as _____
Corpus luteum
28
A mature follicle that contains the egg to be released during ovulation and produce estrogen
Graafian follicle
29
It stimulates the anterior pituitary to produce and release follicle stimulating hormone or luteinizing hormone
Gonadotropin releasing hormone or GnRH
30
It is stimulate the maturation of secondary follicle to tertiary follicles and stimulates the production of estradiol or estrogen by the follicle
Follicle stimulating hormone
31
How many days that corpus luteum develop
1- 17 days
32
Inside the tubules sperm cells will be formed, this tubules are covered by______
Seminiferous epithelium
33
It is located in the sub-anal position and divided into two halves by a __________
Scrotum & scrotal raphe
34
Primary organs of reproduction in male
Testis
35
A paired organs are usually avoid or walnut shape
Testis
36
A very large and rounded oval in shape with long axis distal and directed upward and backward
Testes
37
Undescended testicle or failure of one or both testes to descend into the scrotum
Cryptorchidism
38
The seminiferous epithelium form mainly by
Leydig cells Sertoli cells Germ cells
39
It is composed of seminiferous tubules which is the producing unit distributes are organized into lobes
Testicles
40
It play a fundamental role in testicular development as they nourish and protect germ cells During fetal development this cell are responsible for sexual differentiation
Sertoli cells
41
It is responsible for carrying out spermatogenesis through a series of mitotic missions followed by a series of meiotic divisions ending with the result of a haploid cells
Germ cells
42
It is a specialized cell that will develop into a reproductive cell either a sperm or an egg
Germ cell
43
The testis is suspended in this scrotum by the __________. The chord extends from the abdominal inguinal ring to its attachment at the dorsal anterior end of the testis
Spermatic cord
44
It is composed of a single tortously coiled tubule that is essential for the STORAGE MATURATION and TRANSPORT of sperm
Epididymis
45
How long does spermatic cord of a boar
20 to 25 cm
46
It transport spermatozoa from the epididymis to the urethra
Ductus deferens
47
This is the continuation of the epididymis extending from the tail of the epididymis to the pelvic urethra
Ductus deferens
48
This slight enlargement at the end of the ductus deferens
Ampulla
49
A passageway of sperm to reach the oviduct and are also site of fetal development
Uterine horns
50
It is a single compound tubulo-alveolar gland It releases fluid that mixes with the seminal fluid and nourishes the sperm
Prostate gland
51
Secrete a fluid that adds volume and nutrients to the semen
Seminal vesicles
52
It is the excretory canal for both urine and semen It is a long tube extending from the bladder to the glands penis
Urethra
53
Secrete an alkaline fluid
Bulbo- urethral gland
54
The secretion pass through the urethra prior to the semen
Bulbo urethral gland
55
It releases a fluid into the urethra that cleanses and neutralizes it to allow the sperm to survive the passage to the penis
Bulbo- urethral gland
56
It is a paired accessory gland located on the floor of the pelvis lateral to the ampulla or ductus difference and the neck of the bladder
Seminal vesicles
57
Male organ of copulation
Penis
58
The s curve muscle extends the penis outside the body during mating
Sigmoid flexure
59
Compose essentially of erectile tissue which encloses the penile urethra
Penis
60
The two blind sacs in foreskin
Preputial sacs Preputial hairs
61
Double invagination of skin which contains and covers the free or prescrutal portion of the penis when not erect and covers part of the body of the penis behind the glands when the penis is erect
Prepuce and sheath
62
63
This is where urine and remains of previous ejaculation accumulate in addition in the foreskin are present
Prepuce sacs
64
Period of swine spermatogenesis
50 to 55 days
65
The process of sperms are generated in the testicles
Spermatogenesis
66
Formed in the seminiferous tubules which is an intricate tubules in the testes which contains the cells. germ cells, sertoli cells and leydig cells
Spermatogenesis
67
Produces two genetically identical DAUGHTER cells from a single PARENT cell
Mitosis
68
Produces cells that are genetically unique from the parent and contain only half as much dna
Meiosis
69
Which give rise to sperm or the cell that will become gamete
Germ cells
70
A germ cell found in male
Spermatogonium
71
Which secret the male sex hormone
Leydig cells
72
Which support and provide nutrients, structural, and metabolic support to the germ cells
Sertoli cells
73
The total number of swines chromosomes and how many pairs
total of 38 and 19 pairs
74
What are the three phases
Proliferation Meiosis Differentiation or spermiogenesis
75
The spermatids mature and give rise to spermato
Differentiation or spermiogenesis
76
The spermatogonia divide, giving rise to primary spermatocytes which are bound together to facilitate biochemical interaction and synchronize germ line maturation
Proliferation
77
The primary spermatocytes divide generating secondary spermatocytes which have half the genetic material. Giving rise to spermatids
Meiosis
78
Stimulate synthesis and secretion of ANDROGEN which stimulates spermatogenesis
Luteinizing hormone acts on leydig cells
79
It is stimulates secretion of some factors which help in the process of spermatogenesis
Follicle stimulating hormone acts on the sertoli cells
80
Serves as an anchor with the head
Neck and midpiece
81
Acts as the sperms propulsion mechanism using curving movement of the flagellum to produce vigorous and directional movement allowing the sperm to advance towards the ovule
Axonima or distal part
82
It is the genetic reservoir and protective barrier. It houses the nucleus
Head
83
It is the energy center on motor apparatus
Tail or flagellum
84
The key to fertilization
Acrosome
85
86
serves as the site of semen deposition during mating or insemination
Cervix

ANSCI 103 BREEDING AND SELECTION (9 decks)

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