Brainscape's Knowledge GenomeTM

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


See full index

DAT Biology > Developmental Bio > Flashcards

Developmental Bio Flashcards

1
Q

Function of epididymus

A

Sperm storage and maturation

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

Vas deferens function

A

Transfers sperm to urethra

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

Function of penis

A

Transfers sperm to outside, houses urethra

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

Function of seminiferous vesicles

A

Secrete substances that aid with ejaculation

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

Function of prostate gland

A

Neutralizes acidity of vagina

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

Bulbourethral glands

A

Secrete fluids that lubricate urethra

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

Process of sperm generation

A

Starts in seminiferous tubules. Spermatogonia stem cells undergo mitosis to become primary spermatocytes. Meiosis I occurs. Secondary spermatocytes. Meiosis II occurs. Spermatids. Spermatids travel to epididymis to mature, becoming spermatozoa. Nourished by sertorli cells

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

Components of sperm head

A

Nucleus and Acrosome

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

Acrosome

A

Located in interior of sperm head. Has enzymes necessary for penetrating the egg. From Golgi apparatus.

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

Contents of neck of sperm

A

Contains mitochondria

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

Sperm tail is made up of ______

A

Flagella

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

Ovaries

A

Site of ovum storage

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

Oviduct

A

Pathway from ovaries to uterus

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

Uterus

A

Contains endometrium

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

Endometrium

A

Cushion of blood cells where embryo develops

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

Cervix

A

Connects vagina to uterus

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

Process of oogenesis

A

Oogonium cells undergo mitosis to produce two primary oocytes. Primary oocytes undergo meiosis I but stop at prophase I until puberty. Meiosis I occurs and a secondary oocyte and polar body is produced. If the secondary oocyte is fertilized it becomes a ootid. Ootid becomes ovum.

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

Follicular Phase

A

Follicle secretes estrogen, allowing primary oocyte to become secondary oocyte

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

Ovulation

A

Mature ovum released from follicle (now called corpus lateum)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Luteal Phase

A

Corpus luteum secretes estrogen and proestrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Proliferative Phase

A

Endometrium thickens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Secretory phase

A

Endometrium is maintained by proestrogen from corpus luteum

23
Q

Menstrual Phase

A

Endometrium is expelled through vagina

24
Q

Name of a mature follicle

A

Corpus luteum

25
Q

Ovulation occurs due to a spike in ?

A

LH hormone

26
Q

Capacitation

A

Dissolving of sperm cholesterol coat upon entering the vagina

27
Q

Pathway of sperm into ovum

A

Corona radiata, zone pellucida, acrosome releases digestive enzymes, fusion of sperm with ovum, meiosis II happens in ovum to finalize fertilization

28
Q

Methods of blocking polyspermy

A

Fast block (depolarization), cortical reaction

29
Q

Depolarization of fertilized ovum

A

Na+ enters ovum

30
Q

Cortical reaction

A

Releases calcium 2+ , triggering the release of cortical vesicles which from a fertilization membrane

31
Q

Monozygotic twins

A

Zygote divides into separate zygotes

32
Q

Dizygotic twins

A

Two zygotes carrying different genetic material

33
Q

Determinate Cleavage

A

Produces cells with a developmental fate. Found in protostomes.

34
Q

Indeterminate Cleavage

A

Produces cells without a developmental fate. Common in deuterosomes.

35
Q

Holoblastic cleavage

A

Occurs when little yolk is present (humans) Lead to even blastomeres

36
Q

Meroblastic cleavage

A

Occurs with abundance of yolk. Lead to uneven blastomeres

37
Q

Morula

A

Occurs after 8-cell stage. Allows for differentiation into outer trophoblast and inner intercellular mass

38
Q

Blastula

A

Contains blastocoel. Zygote implants into the uterus

39
Q

Gastrulation Process

A

Formation of endoderm, mesoderm, and ectoderm. Internal cavity arises.

40
Q

What does the endoderm give rise to?

A

Digestive organs, lungs, etc

41
Q

What does the mesoderm give rise to?

A

Heart, muscles, skeletal system

42
Q

What does the ectoderm give rise to?

A

Skin, hair, nervous system

43
Q

Process of neurulation

A

Mesoderm forms notochord, ectoderm forms neural plate. Neural tube becomes CNS. Neural crest becomes PNS.

44
Q

Amnion

A

Innermost layer of embryo. Provides amniotic fluid to cushion embryo.

45
Q

Yolk Sac

A

Nourishment to embryo in birds and reptiles

46
Q

Allantois

A

Transports waste

47
Q

Chorion

A

Forms placenta

48
Q

What structure gives rise to the placenta?

A

Chorion

49
Q

What structure gives rise to the umbilical cord?

A

Allantois

50
Q

Function of yolk in birds and reptiles

A

Nutrition of embryo

51
Q

Function of yolk in mammals

A

Site of RBC formation

52
Q

Function of allantois in birds and reptiles

A

Site of uric acid excretion

53
Q

Function of chorion in reptiles

A

Gas exchange

DAT Biology (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions