Chapter 27 (not Finished)

Question 1

XO

Answer 1

Turner’s syndrome

Question 2

Primary sex organs

Answer 2

Testes in males: ovaries in females

Question 3

Secondary sex organs

Answer 3

Make- system of ducts, glands; penis
Female-uterine tubes, uterus and vagina

Question 4

External genitalia located in the

Answer 4

Perineum

Question 5

Internal genitalia located in the

Answer 5

Pelvic cavity-except testes

Question 6

Secondary sex characteristics

Answer 6

-influence Mate attraction
-Pubic and axillary hair, associated scent glands, pitch of voice
-male-facial/torso hair, muscles
-female- distribution of body fat, breast enlargement, finer body hair

Question 7

Our cells contain 23 pairs of chromosomes includes

Answer 7

22 pair of autosomes and 1 pair of sex chromosomes

Question 8

Gonads begin to develop at ____ weeks as gonadal ridges

Answer 8

5 to 6

Question 9

In _______, mesonephric ducts develop into reproductive tract; paramesonephric ducts degenerate

Answer 9

Males

Question 10

In _______, paramesonephric ducts develop into reproductive tract; mesonephric ducts degenerate

Answer 10

Females

Question 11

Without functional sex determining region Y _________, a fetus will not develop testes but will develop a uterus and fallopian tubes, despite having and X and Y chromosome

Answer 11

Protein

Question 12

The SRY gene (sex determining region of Y chromosome) is found only in males
T/F

Answer 12

True

Question 13

Testes begin to secrete testosterone at ______, Which stimulates _______ ducts to develop into male tracts

Answer 13

8-9 weeks
Mesonephric

Question 14

Testes also secrete __________, causing degeneration of the paramesonephric ducts

Answer 14

Müllerian- inhibiting factor

Question 15

Development of a female results from absence of _______ rather than the presence of _______which are always high during pregnancy

Answer 15

Androgens
Estrogens

Question 16

An XX fetus can be masculinized by abnormally high prenatal androgen, exposure, called

Answer 16

Adrenogenial syndrome (congenital adrenal hyperplasia)

Question 17

Individual is XY and testes secretes testosterones, but show a feminine phenotype due to a deficiency of testosterone receptors,disorder called

Answer 17

Androgen insensitivity disorder (AIS)

Question 18

Androgen insensitivity syndrome

Answer 18

Assumed female fails to menstrate
-presence of testes in the abdomen
-Karyotype of XY chromosomes
-external genitalia develop female anatomy as if no testosterone were present
“Male” With respect to genes and gonads, but not with respect to genitalia

Question 19

_________ becomes the head of the penis or glans clitoris

Answer 19

Genital tubercle

Question 20

Pair of _______ ______ encloses male urethra helping to form the penis or forms the labia minora

Answer 20

Urogenital folds

Question 21

Pair of _____ _____ becomes either the scrotum or labia major

Answer 21

Labioscrotal folds

Question 22

Male and female organs that develop from the same embryonic structure are___________ ex: penis-clitoris and scrotum-labia majora

Answer 22

Homologous

Question 23

Embryonic, connective, tissue cord, extending from gonad to pelvic cavity floor

Answer 23

Gubernaculum

Question 24

About 3% of boys are born With undescended testes, this is called

Answer 24

cryptorchidism

Question 25

In month seven testes pass through the ______into the _____guided by the gubernaculum

Answer 25

Inguinal canal
Scrotum

Question 26

_______ acts to regulate the temperature of the scrotum.
-Wrinkling the scrotum and holding testes against one body

Answer 26

Dartos fascia
-Layer of smooth muscle and connective tissue

Question 27

__________ Divide scrotum into right and left compartments

Answer 27

Internal median septum

Question 28

The scrotum contains ________, the bundle of fibrous connective tissues containing the ductus deferens, blood and lymphatic vessels and testicular nerve.

Answer 28

Spermatic cord

Question 29

Fibromuscular tube that is continuation of the epididymis and is an excretory duct of the testes.

Answer 29

Ductus Deferens

Question 30

To produce sperm temp must be about

Answer 30

35C (95F)
Cooler than core body temp of 37c (98.6F)

Question 31

When it’s cold _______ contracts, to hold testes closer to body. 

Answer 31

Cremaster

Question 32

This venous plexus surrounds testicular artery; countercurrent blood flow removes heat from descending artery blood to be carried away by ascending venous blood

Answer 32

Pampiniform plexus

Question 33

The testes are combined ______ and _____ glands that produce sex hormones and sperm

Answer 33

Endocrine and exocrine

Question 34

The testes are covered by ________ _______-white fibrous capsule

Answer 34

Tunica Albuginea

Question 35

Where is sperm produced

Answer 35

Seminiferous tubules

Question 36

What produces the testosterone?

Answer 36

Interstitial endocrine cells

Question 37

Each seminiferous tubule is lined with thick germinal epithelium composed of

Answer 37

-Layer of germ cells (developing sperm)
-Nurse cells (supporting cells, sustentacular)
- blood-testis barrier

Question 38

Blood-testis barrier (BTB) prevents

Answer 38

Antibodies and immune cells from attacking germ cells

Question 39

Nurse cell secrete proteins ________ and _________, which regulate sperm production

Answer 39

Androgen-binding protein and inhibin

Question 40

Right testicular vein drains into ___________
Left one drains into _________

Answer 40

(Right)
inferior vena cava
(Left)
Renal vein

Question 41

Site of sperm maturation and storage

Answer 41

Epididymis