Brainscape's Knowledge GenomeTM

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


See full index

Bio 30 > Reproduction pt1male > Flashcards

Reproduction pt1male Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Why do species reproduce?
3

A
  • To produce offspring > species survival
  • Sexual reproduction: create new gene combinations
  • Natural selection: only the best adapted survive
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Advantages of reproduction
3

A
  • Increases variation
  • promotes survival
  • removes harmful genes from populations
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Disadvantages tk reproduction

A
  • 2 parents needed
  • Requires more time/energy
  • fewer offspring produced
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Male vs female reproductive systems are characterized by
5

A
  • Gonads , testes vs ovaries
  • Sex hormones, testosterone vs estrogen
  • Gametes, sperm vs eggs
  • Primary sex characteristics, reproductive organs
  • Secondary sex characteristics, features not directly related to reproduction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

the male gonads are ___ and they produce ?

A

male gonads> testes produce sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Tge female gonads are ____ and they produce?

A

female gonads= ovaries> produce eggs

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

The fusion of male and female sex cells is called what?
> and its produces what?

A

Fusion of male and female cells is called fertilization and it produces a zygote

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

From what is a embryo formed and how?
> What dose it become as it grows?

A

The embryo is formed from the zygote by being devided many times
> It continues to grow into a fetus

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

What are the testes ?
> what do they produce?
> when dose the production begin?

A

Testes are thw male gonads (make reproductive cells)
> They produce sperm and testosterone , androgen
> the production of sperm begins at 13 and continues through life

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

Whats the scrotum?
> what dose it do /how?

A

Tissue sac around testies
> it ensures the temp of testis be at 3 celsius lower than body temperature for sperm production to occur by being close to body when cold and away when hot

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

Each testis contains:

A

Seminiferous tubules containing sertoli cells and interstitial cells

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

Seminiferous tubules are what
>structure function
>how many dose it make

A

Seminiferous tubules are tightly packed coiled tubules within testis (250m)
> contain “sperm factories” in each testis where sperm mature ans devide
> they make 300/500 mil/day both together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

2 types of cells within the seminiferous tubules and their roles

A

1- Sertoli cells
> nourish and protect developing sperm until they are mature
2- Spermatogenic cells
> produce sperm

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

Sertoli cells are what and role

A

Within the testes
> supply nutrients to developing sperm

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

Interstitial cells are what and role

A

Within testes found between seminiferous tubules
> produce testosterone

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

Spermatogenesis is what

A

a process that undergoes to form sperm in seminferous tubules by meiosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Spermatogenesis diffrent formations of sperm

A

Sperm producing cells : Spermatogenesis-
Spermatogonia> > spermatocytes> spermatids(Immature)> sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

how long dose it take to form sperm and by what cells

A

9-10 weeks to form mature sperm from spermatocytes to spermatids and then sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Where dose sperm division begin and go

A

Begins in walls of the tubules and the more mature sperm is then released into the center of the tube

20
Q

What is the epididymis
> roles and how long
> whats it called “”

A

The epididymis is a compact long coiled tube on the exterior surface of the testes
> temporary storage cite for immature sperm
> sperm school, takes about 20 days for sperm to swim through, during this time they gain the ability to sperm as they mature

21
Q

What are the ducts vas deferens and role
> how is it connected

A

Tube that connects to the epididmys and transports sperm to the urethra
> carries sperm to ejacuation duct
> known as storage duct

22
Q

Ejaculatory duct roles

A

controls semen (sperm + fluids) entering into the urethra
> carries sperm to penis

23
Q

What is a penis and its roles

A

Anatomy of outer body that has the function to deliver sperm / samen into female
> shaft with tip(glans) , foreskin surrounding tip

24
Q

What’s circumsision and erection

A

circumsision is the removal of the foreskin
erection is the tissue filling with blood and veins compressing

25
Q

Urethra in males is what and its roles

A

Shared tube in males for both urine and semen (never at same time)

26
Q

Ehacuation is and how dose it work

A

Urinary system shuts off first , bladder sphincter tightens as you cannot have both urine and semen at same time
- sends off sympathetic and parasympathetic sensory nervous system causing penis to contract
> secrets sperm and glands to release 3-4ml of fluid +500 mil sperm per ejacuation

27
Q

Ehacuation is and how dose it work

A

Urinary system shuts off first , bladder sphincter tightens as you cannot have both urine and semen at same time
- sends off sympathetic and parasympathetic sensory nervous system causing penis to contract
> secrets sperm and glands to release 3-4ml of fluid +500 mil sperm per ejacuation

28
Q

Ejacuation releases how much sperm and semen and the properties

A

3-4ml fluid + 500 mil sperm per ejaculation
has basic ph 7.2-7.4
- sperm live 24-72 hrs in semen

29
Q

Where dose sperm mix with semen to form fluid

A

As it moves through the ducts vas deferens its mix with fluid from series of glands

30
Q

What are the glands that provide stuff for sperm to mix with to form fluid

A

Seminal vesicles, prostate gland and cowpers gland

31
Q

The gland , Seminal vesicle (paired) dose what to sperm

A

It provides fructose that gives sperm energy to get to egg
- Prostaglandins: causes uterine contraction in the female move towards the egg

32
Q

The prostate gland (single) is what
> role in reproduction

A

Size of walnut, surround urethra located in front of rectum
> provides an allaline buffer to acidic vagina , activates sperm

33
Q

Whats prostatis

A

as men age prostate cancer wnlarge , strangling urethra causing difficulty urinating

34
Q

Whats the cowper’s gland (paired) role

A

secretes mucus prior to ejaculation to neutralize semen in urethra from urine

35
Q

Semen is

A

milky mixture containing sperm and seminal fluid

36
Q

Seminal fluid is

A

fluid part of semen which is secreted bu three glands: Prostate, cowper’s ans seminal vesicles

37
Q

pathway of sperm

A

Produced and matures in testes in seminiferous tubules > epididymis > vas ducts deferns> ( passes seminal vesicle, prostate gland and bulbourtherap gland)> urethra

38
Q

Which chromosome are male and what is it

A

XY
on the Y ; testes determening factor (TDF) causes production of androgens (male hormones)

39
Q

Testes descend where decelop and when

A

deceloped in abdominal cavity , start descending 3rd month abdominal finish by 7th

40
Q

Puberty in males is and what dose it cause

A

Testosterone production which causes
- final development of sex organs , spermatogenesis, secondary sexual characteristics; deep voice, hair muscle developing

41
Q

Andropause is

A

drop of testosterone level at 40
causes loss of bone and muscle mass and less sperm production

42
Q

What is hormonal regulation in males?
> what organs are involved to release hormones
> what hormones

A

> Hormone regulation is when hypothalamus releases GnRH which stimulates anterior pituitary gland to release hormones
FSH, Follocle Stimulating hormone
and LH, Luteinizing hormone

43
Q

What is the FSH hormone do?

A

promotes sperm production in seminiferous tubules

44
Q

What is the LH , luteinizing hormone also called?
> what dose it do

A

Interstitial cell stimulating hormone, ICSH
> acts on interstitial cells to produce testosterone

45
Q

What is sterile?

A

inability to release or produce sperm

46
Q

what is vasectomy?

A

form of contraception, vas deferes are cut off to stop sperm going into semen

47
Q

How is urine and semen not able to enter urethra at the same time?

A

Sphincter at bottom of bladder closes during erection so urine is unable ti pass through urethra during ejaculation

Bio 30 (10 decks)

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