Activity 2: Conducting a Microscopic Study o Selected Male Reproductive Organs

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1

The testes are covered by what capsule?

Tunica albuginea

2

The tunica albuginea is made out of what type of tissue?

Dense connective tissue

3

An extension of the tunica albuginea into the testes is called what?

A septum

4

An extension of the tunica albuginea, aka a septum, divide the testes into what?

Lobules

5

A lobule houses what range of tubules?

Houses 1-4 seminiferous tubules

6

What is the function of seminiferous tubules?

To form sperm

7

How coiled are the seminiferous tubules?

Highly-coiled

8

The seminiferous tubules of each lobule converge to do what?

To empty the sperm

9

The seminiferous tubules of each lobule converge to empty the sperm into what tubule?

A straight tubule

10

The straight tubule then delivers the sperm to what set of tubules?

The rete testis

11

The rete testis are located where in regards to a testis?

Located at the posterior side of the testis

12

Sperm traveling through the rete tetis then enter what structure of the testes?

The epididymis

13

What specific group of cells lie between the seminiferous tubules? (Hint: Interstitial means they lie outside of the tubules as well)

Interstitial endocrine cells

14

Interstitial endocrine cells are padded with what tissue?

Connective tissue

15

What is the function of the intersitial endocrine cells?

To produce testosterone

16

What is the function of testosterone?

To stimulate sperm production

17

What are the cells that lie at the periphery or close to the edge of the seminiferous tubules?

Spermatogonia or spermatogenic cells

18

How often do spermatogonia undergo mitosis?

Very often

19

Spermatogonia are under such frequent mitoses what 2 reasons?

1. To increase their number

2. To maintain their cell population

20

About half of the spermatogonia's offspring become what type of cells?

Primary spermatocytes

21

Primary spermatocytes undergo what biological process to produce what?

Undergo meiosis to produce spermatids

22

Spermatids have half of what?

Half of the genetic composition

23

What is the function of the remaining daughter cells of the spermatogonia that do not turn into primary spermatocytes? (Hint: where do they remain and what is their specific function in regard to the germ line?)

They remain at the periphery of the seminiferous tubules to maintain the germ cell line

24

Spermatids can sometimes be embedded in what cell type?

Sustentocytes

25

Sustentocytes are also called what?

Sertoli cells

26

What is the function of sustentocytes?

Nourish the spermatids

27

Spermatids ultimately transform into what?

Sperm

28

The lumen area of the testes also contains sperm. How mature are the sperm that are seen near the lumen area?

Immature sperm

29

Sperm develop from the spermatids by what 2 physical developments? (Hint: think cytoplasm and tail)

1. The loss of extraneous cytoplasm

2. The development of a propulsive tail

30

The acrosome of a sperm cell caps what of the sperm? (Hint: caps 2 things)

1. Caps the head

2. Caps the nucleus

31

The acrosome of a sperm cell contains what?

Enzymes

32

What is the function of the enzymes found in the acrosome?

Help the sperm penetrate the egg

33

What epithelium is found in the lumen of the urethra?

Stratified columnar epithelium

34

What is the function of stratified columnar epithelium that is found at the lumen of the urethra?

Protection of underlying tissues

35

The loose connective tissue in the seminal glands is underlain by what type muscle?

Smooth muscle

36

The smooth muscle that underlays the seminal glands is divided into what 2 layers? (Hint: Name the 2 layers from innermost to outermost)

1. Circular layer

2. Longitudinal layer

37

The epididymis is composed of what epithelium?

Pseudostratified columnar epithelium

38

The pseustratified columnar epithelium of the epididymis contains what specific microvilli?

Stereocilia

39

What are the 2 functions of the stereocilia microvili found in the pseudostratified columnar epithelium of the epididymis?

1. Absorb excess fluid

2. Pass nutrients to the sperm in the lumen

40

What is the function of the smooth muscle layer in the epididymis?

To contract and propel sperm/seminal fluid from the epididymis through the vas deferens, ejaculatory duct, and urethra.

41

The smooth muscle layer in the epididymis contracts under what stimulation? (Think: parasympathetic or sympathetic)

Under sympathetic stimulation

42

The smooth muscle layer in the epididymis contracts under sympathetic stimulation during what 2 events? (Hint: Think 2 events of how sperm is transferred/transported)

1. Emission

2. Ejaculation

43
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Testis/seminiferous tubule

44
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Testis/seminiferous tubule

45
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Penis

46
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Penis

47
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Seminal gland

48
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Seminal gland

49
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Epididymis

50
card image

1. Identify the blanks.

2. What is depicted in the slide specifically?

card image

1. Look above

2. Epididymis