Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

bio - 30 > Unit B - Reproduction (Male system) > Flashcards

Unit B - Reproduction (Male system) Flashcards

1
Q

What is the difference between primary and secondary sec characteristics?

A

Primary - at birth
Secondary - at puperty

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the three main functions of the of the male reproduction system?

A
  1. Produce male gamete
  2. Produce male sex hormones
  3. Deliver gamete
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What makes a male, male?

A

The SRY gene

Upregulates genes for development of male reporductive system

Suppresses the female sex-determining pathway

do not need to know the upregulates and suppresses part in great detail.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the functions of the testes?

A
  1. produce sperm (spermatogenisis)
  2. produce male sex hormones
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the function of the Seminiferous Tubules?

what cell helps its function?

A
  1. Produce sperm cells
  2. Have sertoli cells that nourish developing sperm
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the three stages of sperm cells?

A

Spermatogonium → Spermatocytes → Sperm cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the two functions of sertoli cells?

A

Nourish developing sperm cells and produce Inhibin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where are interstitial cells found?

A

Outside/between seminiferous tubules.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are interstitial cells stimulated by __ to produce __

A

LH to produce testosterone.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why are the scrotum and the testies lower than the rest of the body?

A

In order for sperm to properly develop (need lower temperature)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the function of the scrotum?

A

To hold the testies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are signs that a male is infertile?

A
  1. the testies haven’t fallen yet
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the function of the Vas Deferens?

A

Carry sperm from the testes to the urethra.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the function of the Ejaculatory Duct?

A

Regulates the movement of sperm and fluids (semenal fluid)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the function of the sphincter?

A

Ensures that EITHER semenal fluid or urine goes through the urethra

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What nervous system causes an erection? How does it do this?

A

Parasympathetic

Dilation of arteries, compresses veins,

17
Q

What system causes ejaculation?

A

Sympatetic nervous system

18
Q

What are the four parts of the sperm cell?

A

Acrosome
Head
Midpiece
Flagellum

19
Q

Where are mitochondria found in sperm?

A

The mid piece

20
Q

What propells sperm?

A

Flagellum

21
Q

What caps head of sperm? What is it made off?

A

Acrosome

Filled with enzymes that dissolve outer coating of egg

22
Q

Can one sperm weaken the outer coating of egg?

A

No, several are nessesary.

23
Q

What is the function of the epididymus?

A

Stores sperm cells where they completely mature

24
Q

What are the three glands that contribute to seminal fluid?

A

Seminal vesicles
Prostate gland
Cowpers gland

25
Q

What does the seminal vesicles secrete?

A
  1. energy
  2. prostaglandins (causes contractions in female)
26
Q

What does the Prostate Gland secrete?

A

Alkaline (basic) buffers

protect sperm from acidic vagina

27
Q

What does the Cowpers gland secrete?

A

Mucus - protects sperm

28
Q

What are the two main sex horomones in a male?

A

Androsterone and Testosterone

29
Q

Where are testosterone and androsterone produced?

A

Interstitial cells

30
Q

What promotes development of secondary sex characteristics in men?

A

Testosterone

31
Q

What is the feeback loop for testosterone?

A

Hypothalamus → GnRH → Anterior Pituitary → LH → Interstitial cells → Testosterone

Testosterone stimulates Seminiferous tubules

32
Q

What is the feeback loop for sperm / inhibin production?

A

Hypothalamus → GnRH → Anterior Pituitary → FSH → Seritoli & seminiferous tubules → Inhibin and sperm

33
Q

What is the negitive feedback loop in the male reproduction system?

A

Testosterone and/OR Inhibin → Hypothalamus and Pituitary gland

bio - 30 (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions