Deck 19: Reproductive System

Question 1

The tail of the spermatozoa is used for

A) penetrating the ovum.
B) power.
C) producing chromosomes.
D) propulsion.

Answer 1

propulsion.

Question 2

In order to fully descend, the testes must pass through the

A) inguinal ring.
B) rete testis.
C) thoracic cavity.
D) tunica albuginea.

Answer 2

inguinal ring.

Question 3

Gamete meiosis results in each daughter cell having __ the number of chromosomes as the parent cell.

A) four times
B) one fourth
C) one half
D) twice

Answer 3

one half

Question 4

Spermatogenesis takes place in the

A) epididymis.
B) interstitial cells.
C) pampiniform plexus.
D) seminiferous tubules.

Question 5

The thin membrane that is tightly adhered to each testis and the structures of the spermatic cord is the

A) common vaginal tunic.
B) parietal vaginal tunic.
C) tunica albuginea.
D) visceral vaginal tunic.

Question 6

The scrotum is a

A) band of connective tissue.
B) intricate meshwork of tiny veins.
C) muscular tube.
D) sac of skin.

Question 7

The structure that connects the testes to the rest of the body is the

A) cremaster muscle.
B) scrotum.
C) spermatic cord.
D) visceral vaginal tunic.

Question 8

Which part of the spermatozoa contains the most mitochondria?

A) acrosome
B) head
C) midpiece
D) tail

Question 9

The diploid chromosome number is always

A) an even number.
B) an odd number.
C) below 50.
D) below 60.

Question 10

Which part of the spermatozoa contains digestive enzymes?

A) acrosome
B) head
C) midpiece
D) tail

Question 11

The pampiniform plexus is formed from

A) arteries.
B) capillaries.
C) lymph vessels.
D) veins.

Question 12

The full diploid chromosome makeup of a male animal is

A) 2n,XX.
B) 2n,XY.
C) 4n,XX.
D) 4n,XY.

Question 13

The gubernaculum is a

A) band of connective tissue.
B) intricate meshwork of tiny veins.
C) muscular tube.
D) sac of skin.

Question 14

The male gonads are the

A) scrotum.
B) seminiferous tubules.
C) spermatozoa.
D) testes.

Question 15

If the diploid chromosome number for an animal is 44 (rabbit), what is the haploid number of its gametes?

A) 22
B) 44
C) 5.5
D) 88

Question 16

Meiosis occurs

A) in all cells.
B) in cells that require oxygen.
C) only in rapidly reproducing cells.
D) only in reproductive cells.

Question 17

When a cell undergoes mitosis, each daughter cell will have __ of chromosomes as the parent cell.

A) four times the number
B) half the number
C) the same number
D) twice the number

Question 18

If the diploid chromosome number of an animal is 38 (cat), what is the diploid number of its offspring?

A) 19
B) 38
C) 76
D) 9.5

Question 19

What structure adjusts the position of the testes relative to the body according to the environmental temperature?

A) cremaster muscle
B) gubernaculum
C) spermatic cord
D) vas deferens

Question 20

Where is the nucleus of the spermatozoa located?

A) acrosome
B) head
C) midpiece
D) tail

Question 21

Another name for the capsule of the testis is the

A) common vaginal tunic.
B) proper vaginal tunic.
C) tunica albuginea.
D) visceral vaginal tunic.

Question 22

The bands that attach the penis to the pelvis are the

A) cremaster muscle.
B) crura.
C) gubernaculum.
D) ischiocavernosus muscle.

Question 23

The "nurse" cells to young spermatids are the

A) interstitial cells.
B) primary spermatocytes.
C) secondary spermatocytes.
D) Sertoli cells.

Question 24

The vas deferens is a continuation of the

A) ampulla.
B) head of the epididymis.
C) tail of the epididymis.
D) visceral vaginal tunic.

Question 25

What two structures does the vas deferens connect?

A) efferent duct and spermatic cord
B) epididymis and efferent duct
C) urethra and epididymis
D) urethra and spermatic cord

Question 26

Which animals don't have seminal vesicles?

A) cats and horses
B) dogs and cats
C) horses and ruminants
D) ruminants and dogs

Question 27

Most of the erectile tissue is found in the __ of the penis.

A) body
B) glans
C) prepuce
D) root

Question 28

A Sertoli cell tumor can produce high blood levels of

A) androgen.
B) estrogen.
C) progesterone.
D) testosterone.

Question 29

The majority of the volume of semen is composed of

A) acidic secretions from the accessory reproductive glands.
B) alkaline secretions from accessory reproductive glands.
C) spermatids.
D) spermatozoa.

Question 30

The primary endocrine cells of the testes are the

A) interstitial cells.
B) primary spermatocytes.
C) secondary spermatocytes.
D) Sertoli cells.

Question 31

The septa from the __ extend into the soft tissue of the testis, dividing each testis into tiny lobules.

A) common vaginal tunic
B) proper vaginal tunic
C) tunica albuginea
D) visceral vaginal tunic

Question 32

Cryptorchidism refers to a condition of one or more

A) extra testes.
B) tumor of the testes.
C) undescended testes.
D) withered testes.

Question 33

Which accessory reproductive gland secretes a mucinous fluid that lubricates the urethra for passage of semen?

A) bulbourethral gland
B) prostate gland
C) seminal vesicle
D) vesicular gland

Question 34

What do the primary endocrine cells of the testes produce?

A) androgens
B) melanin
C) growth hormone
D) progestins

Question 35

The only accessory reproductive gland in canines is the

A) bulbourethral gland.
B) prostate gland.
C) seminal vesicle.
D) vesicular gland.

Question 36

The two portions of the male urethra are the

A) pelvic and penile portions.
B) penile and testicular portions.
C) scrotal and pelvic portions.
D) testicular and scrotal portions.

Question 37

The maturation and storage site for the immature spermatozoa is the

A) efferent duct.
B) epididymis.
C) rete testis.
D) seminiferous tubule.

Question 38

Which hormone stimulates the primary endocrine cells of the testes?

A) FSH
B) LH
C) TSH
D) TH

Question 39

One of the typical clinical signs of a Sertoli cell tumor may be

A) alopecia.
B) gynecomastia.
C) polyphagia.
D) testicular hyperplasia.

Question 40

Cowper's glands are another name for the

A) bulbourethral gland.
B) prostate gland.
C) seminal vesicle.
D) vesicular gland.

Question 41

When engorged, the erectile tissue of the penis is filled with

A) blood.
B) interstitial fluid.
C) plasma.
D) semen.

Question 42

Which species of animal has an os penis?

A) bovine
B) canine
C) equine
D) feline

Question 43

The granulosa cells in a developing follicle

A) become follicular cells.
B) become ova.
C) produce estrogen.
D) produce progestins.

Question 44

Which species of animal has short spines covering the glans of the penis?

A) canine
B) caprine
C) feline
D) murine

Question 45

The corpus cavernosum penis is located

A) caudal to the urethra.
B) cranial to the urethra.
C) dorsal to the urethra.
D) ventral to the urethra.

Question 46

The female gametes are

A) follicular cells.
B) granulosa cells.
C) ova.
D) ovaries.

Question 47

On average, how often are oocytes replaced in the ovaries?

A) after each pregnancy
B) every ovarian cycle
C) never
D) once a month

Question 48

Erectile tissue is composed of

A) blood vessels and fibrous connective tissue.
B) fibrous connective tissue and sinuses.
C) muscle and blood vessels.
D) sinuses and muscle.

Question 49

Most of the volume of a mature follicle is made up of the fluid-filled

A) antrum.
B) corona radiata.
C) cumulus oophorus.
D) zona pellucida.

Question 50

Which hormone produced by the ovary is responsible for preparing a female for breeding and pregnancy?

A) estrogen
B) FSH
C) LH
D) progesterone

Question 51

Which two hormones are produced in the ovary?

A) estrogen and progestins
B) FSH and LH
C) LH and estrogen
D) progestins and FSH

Question 52

The species of animals that "tie" after the male has ejaculated is the

A) canine.
B) caprine.
C) equine.
D) feline.

Question 53

The best way to "untie" a male and female after the male has ejaculated is to

A) do nothing until it happens naturally.
B) gently pull them apart.
C) pour cold water on them.
D) pour warm water on them.

Question 54

The sigmoid flexure of the penis is characteristic of all of these animals below except the

A) boar.
B) bull.
C) ram.
D) stallion.

Question 55

A uniparous animal

A) gives birth to one offspring per pregnancy.
B) goes through one estrous cycle once a year.
C) has been through one pregnancy.
D) has one estrous cycle each month.

Question 56

Many sensory nerve endings are found in the __ of the penis.

A) body
B) glans
C) prepuce
D) root

Question 57

Follicular activation is under the influence of

A) FSH from the ovary.
B) FSH from the pituitary gland.
C) LH from the ovary.
D) LH from the pituitary gland.

Question 58

Which hormone produced by the ovary prepares the uterus for implantation and pregnancy?

A) estrogen
B) FSH
C) LH
D) progesterone

Question 59

The female gonads are the

A) ova.
B) ovaries.
C) ovaries and uterus.
D) oviducts and ovaries.

Question 60

The female reproductive organs are suspended from the dorsal part of the abdominal wall by the

A) broad ligaments.
B) lateral fold.
C) round ligaments.
D) suspensory ligaments.

Question 61

Ovulation occurs spontaneously in which of the following species?

A) camels and dogs
B) cats and camels
C) dogs and horses
D) horses and cats

Question 62

Inside a mature follicle an oocyte sits on a mound of cells called the

A) antrum.
B) corona radiata.
C) cumulus oophorus.
D) zona pellucida.

Question 63

The first stage a follicle goes through after ovulation is the

A) corona radiata.
B) corpus hemorrhagicum.
C) corpus luteum.
D) cumulus oophorus.

Question 64

The rising level of which hormone induces spontaneous ovulation?

A) FSH
B) LH
C) TH
D) TSH

Question 65

Which species is an induced ovulator?

A) canine
B) caprine
C) equine
D) feline

Question 66

The finger-like projections that make sure the mature female gamete gets caught when it is ovulated are the

A) fallopian tubes.
B) fimbriae.
C) infundibula.
D) oviducts.

Question 67

The only portion of the female reproductive system that is visible from the outside is the

A) cervix.
B) uterus.
C) vagina.
D) vulva.

Question 68

The estrous cycle is controlled by

A) adrenal medulla hormones.
B) anterior pituitary hormones.
C) ovarian hormones.
D) posterior pituitary hormones.

Question 69

Which two hormones are directly responsible for the physical and behavioral changes that are associated with a female in heat?

A) estrogen and progestins
B) FSH and LH
C) LH and estrogen
D) progestins and FSH

Question 70

When a mature reproductive gamete is ovulated, it is surrounded by a layer of cells called the

A) corona radiata.
B) corpus hemorrhagicum.
C) cumulus oophorus.
D) zona pellucida.

Question 71

The corpus hemorrhagicum is formed under the influence of

A) estrogen.
B) FSH.
C) LH.
D) progesterone.

Question 72

The tube that receives the penis during breeding is the

A) cervix.
B) oviduct.
C) vagina.
D) vulva.

Question 73

The timing for breeding is controlled by the

A) estrous cycle.
B) estrus cycle.
C) testicular cycle.
D) uterine cycle.

Question 74

Which animal is a polyestrous animal?

A) bovine cow
B) equine mare
C) feline queen
D) ovine ewe

Question 75

If fertilization is going to happen, where must the spermatozoa be when ovulation takes place?

A) corpus luteum
B) oviduct
C) uterus
D) vagina

Question 76

The usual site for fertilization of a mature female gamete by a mature male gamete is in the

A) ovary.
B) oviduct.
C) uterine body.
D) uterine horn.

Question 77

The cervix is located between the

A) uterine body and the vagina.
B) uterine horns and vagina.
C) vagina and vulva.
D) vulva and uterine horns.

Question 78

What female part is equivalent to the male penis?

A) cervix
B) clitoris
C) infundibulum
D) oviduct

Question 79

The thickest layer of the uterus is made up of

A) dense, fibrous connective tissue.
B) loose, areolar connective tissue.
C) skeletal muscle.
D) smooth muscle.

Question 80

The corpus luteum produces which hormone that is necessary for pregnancy to be maintained if fertilization takes place?

A) androgen
B) estrogen
C) progesterone
D) testosterone