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Repro Phys > Quiz 3 lecture material > Flashcards

Quiz 3 lecture material Flashcards

1
Q

Main purpose of sperm

A

transfer genetic material from the male to the female oocyte

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2
Q

Genetic material in the sperm is stored in the

A

nucleus

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3
Q

Most important part of the sperm

A

nucleus-where genetic information is stored

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4
Q

What in the sperm tail makes it move

A

mitochondria provide energy to the microtubules (axoneme) which move in the tail

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5
Q

Sliding of microtubule doublets does what

A

gives the sperm tail movement

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6
Q

Motility of sperm refers to

A

how it moves
should move forward

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7
Q

Morphology of the sperm refers to

A

how it looks

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8
Q

Types of morphology abnormality

A

Primary
Secondary

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9
Q

Primary Abnormality

A

happens during the generation of sperm
-Example- double head

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10
Q

Secondary abnormality

A

happens later after development, produced normally but something else goes wrong
-Example- coiled tail

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11
Q

What type of abnormality is a severed head

A

can be secondary or primary

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12
Q

Crater Defect is what type of abnormality

A

primary

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13
Q

Tapered head is what type of abnormality

A

primary

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14
Q

Ruffled acrosome is what type of abnormality

A

Primary

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15
Q

Knobbed Acrosome is what type of abnormality

A

Primary

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16
Q

Coiled tail is what type of abnormality

A

Secondary

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17
Q

Double midpiece is what type of abnormality

A

Primary

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18
Q

Folded tail is what type of abnormality

A

Primary or secondary

19
Q

Detached head with a normal tail semi attached

A

Secondary

20
Q

Job of Sertoli cells

A

nursing cell
support spermatogenesis

21
Q

Stages of spermatogenesis

A

Spermatocytogenesis (mitosis)
Meiosis
Spermiogenesis (formation of sperm)
Spermiation

22
Q

Spermatocytogenesis

A

Spermatocyte production
increase in number

23
Q

Meiosis

A

makes the sperm cell haploid for the proper number of chromosomes for offspring

24
Q

Spermiogenesis

A

changes the shape of the cell from a circle to sperm shaped

25
Q

Spermiation

A

sperm released into the lumen

26
Q

How long does spermatogenesis take

A

60-63 days

27
Q

Mitotic division takes how long

A

20 days

28
Q

Meiosis I takes how long

A

21 days

29
Q

Meiosis II takes how long

A

2 days

30
Q

Second phase of spermiogenesis takes how long

A

17 days

31
Q

The egg is how big

A

100x the size of the sperm

32
Q

how does the sperm penetrate the egg

A

enzymes inside the acrosome break down the layers to get sperm inside the egg

33
Q

What is the shape of a spermatid

A

similar to regular cell
circle

34
Q

What happens in The Golgi phase of Spermiogenesis

A

Golgi moves towards the top of the nucleus
produces proacrosome granules that will later form the acrosome
Centrioles move towards the bottom of the nucleus- will later form the microtubules that make up the tail

35
Q

What happens in the cap phase of spermiogenesis

A

the axoneme is formed to start the tail
The acrosomic vesicle spreads out to form the acrosome

36
Q

What happens in the acrosomal phase of spermiogenesis

A

Golgi moves toward tail after acrosome is made
mitochondria migrate to midpiece
Cytoplasm is used to push the mitochondria to the midpiece

37
Q

What happens during the maturation phase of Spermiogenesis

A

Cytoplasm is pushed out
- cytoplasmic droplet that is lost with maturity in the epididymis
sperm will be functional afterwards

38
Q

Spermiation is when

A

sperm is released into the lumen from seminiferous tubules

39
Q

Spermiation is what type of cycle

A

continuous
happening all the time

40
Q

What is the job of the blood-testis barrier

A

protect germ cells from antibodies produced by blood and used to attack cells

41
Q

parts of the blood-testis barrier

A

Sertoli cells
basement membrane
Wall of blood vessel

42
Q

Sertoli cells secrete

A

testosterone

43
Q

The blood barrier is what type of connection

A

tight junction

44
Q

The movement of sperm into the lumen depends on

A

concentration
flows from high concentration to low

Repro Phys (16 decks)

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