Spermiogenesis

Question 1

differentiation stage of spermatids into mature
spermatozoa

Answer 1

Spermiogenesis

Question 2

what are the three (3) features of spermiogenesis?

Answer 2

1.) an acrosome atop its compacted head,
2.) the midpiece containing a ring of mitochondria,
3.) a flagellum for motility

Question 3

What are the four (4) phases of spermiogenesis?

Answer 3

1) Golgi phase,
(2) Cap phase,
(3) Tail phase,
(4) Maturation phase.

Question 4

What follows spermiogenesis?

Answer 4

spermiation

Question 5

By the end of the last phase,
Spermatozoon consists of three distinct
parts:

Answer 5

1.) the acrosomal head,
2.) mid (connecting) piece, and
3.) the tail.

Question 6

_____ is the initial set of events

Answer 6

Golgi phase

Question 7

In the Golgi phase, there is an intensified activity of the ______

Answer 7

Golgi Apparatus

Question 8

Golgi phase

Organelle produces and release lytic enzymes that will
gather inside the future _______ (_______). At the
other end of the spermatid, a mid-piece form. The area
thickens as mitochondria fill in this part.

Answer 8

acrosome (cap phase)

Question 9

Golgi Phase

Organelle produces and release lytic enzymes that will
gather inside the future acrosome (cap phase). At the
other end of the spermatid, a mid-piece form. The area
thickens as _________ fill in this part.

Answer 9

mitochondria

Question 10

Golgi phase
the genetic material (_____) undergoes packaging as
protamines replace histones.

Answer 10

DNA

Question 11

Golgi phase
the genetic material (DNA) undergoes _______ as
protamines replace histones.

Answer 11

packaging

Question 12

Golgi phase

the genetic material (DNA) undergoes packaging as
_______ replace histones.

Answer 12

protamines

Question 13

Golgi phase
the genetic material (DNA) undergoes packaging as protamines replace _________.

Answer 13

histones

Question 14

thickening and
reduction of the
nuclear size,
condensation of the
nuclear contents into
the smallest space.

Answer 14

Nuclear Condensation

Question 15

True or False

Golgi phase

By the end of this phase, the genetic material is tightly
packed, highly condensed, and transcriptionally active.

Answer 15

False (transcriptionally inactive)

Question 16

formation of the acrosomal cap

Answer 16

Cap phase

Question 17

Acrosomal cap aka _____

Answer 17

acrosome

Question 18

The acrosomal cap or acrosome:
is a membrane-bound compartment at the tip of the head of the
________

Answer 18

spermatid

Question 19

Acrosomal cap or acrosome
forms when the ________ surrounds the anterior of the
spermatid to form the acrosome.

Answer 19

Golgi apparatus

Question 20

Cap phase
An ________-__________-________ complex
characterizes this stage.

Answer 20

acrosome- acropoaxome-manchette

Question 21

Cap phase

The complex is the major driver for shaping the _____ of
the developing spermatid.

Answer 21

head

Question 22

Forming a cap
(acrosome)
containing enzymes
that play an important
role in the penetration
through the pellucid
zone of the oocyte.

Answer 22

Acrosome Formation

Question 23

Acrosome Formation
Forming a cap
(acrosome)
containing enzymes
that play an important
role in the penetration
through the _______
zone of the oocyte.

Answer 23

pellucid

Question 24

elongation of microtubules on one of the
centrioles of the spermatid to become the tail.

Answer 24

Tail phase

Question 25

Tail phase is the _________ ____ _______ on one of the centrioles of the spermatid to become the tail.

Answer 25

elongation of microtubules

Question 26

Tail phase: elongation of microtubules on one of the ______ of the spermatid to become the tail.

Answer 26

centrioles

Question 27

In Tail Phase, the microtubules form an ________.

Answer 27

axoneme

Question 28

Tail Phase The axonome – contains microtubules that are arranged in a ______ configuration.

Answer 28

9+2

Question 29

Tail phase The developing germ cell orients itself such that the growing tail is directed toward the ______________ of the seminiferous tubule

Answer 29

center of the lumen

Question 30

generation of the sperm cell tail

Answer 30

Flagellum formation

Question 31

Four parts of the finished flagellum

Answer 31

1.) neck 2.) mid piece 3.) principal piece 4.) tail

Question 32

Four (4) parts of the finished flagellum The neck contains the two centrioles (________ and ______) among other things.

Answer 32

proximal and distal

Question 33

Four (4) parts of the finished flagellum The _______ _______consists of a sheath of ring- shaped mitochondria grouped around the axoneme to provide the energy for the flagellar movement.

Answer 33

mid piece

Question 34

Four (4) parts of the finished flagellum The mid piece consists of a sheath of ______________ grouped around the axoneme to provide the energy for the flagellar movement.

Answer 34

ring-shaped mitochondria

Question 35

Four (4) parts of the finished flagellum The mid piece consists of a sheath of ring- shaped mitochondria grouped around the _______ to provide the energy for the flagellar movement.

Answer 35

axoneme

Question 36

Four (4) parts of the finished flagellum The ______ ______ has a sheath of ring fibers around the axoneme.

Answer 36

principal piece

Question 37

Four (4) parts of the finished flagellum The _____ consists of only the 9+2 structure of the axoneme

Answer 37

tail

Question 38

The final phase of spermiogenesis

Answer 38

Maturation phase

Question 39

In maturation phase, the residual ________ has been disposed of.

Answer 39

cytoplasm

Question 40

In maturation phase, the residual cytoplasm is termed as the _________ i.e. the remaining cytoplasm and organelles, is removed by phagocytosis through Sertoli cells

Answer 40

residual body of regaud

Question 41

In maturation phase, the residual cytoplasm is termed as the residual body of regaud, i.e. the remaining cytoplasm and organelles, is removed by ________through Sertoli cells

Answer 41

phagocytosis

Question 42

In maturation phase, the residual cytoplasm is termed as the Termed as the residual body of regaud, i.e. the remaining cytoplasm and organelles, is removed by phagocytosis through _______cells

Answer 42

Sertoli cells

Question 43

elimination of all unnecessary cytoplasm.

Answer 43

Cytoplasm reduction

Question 44

The migration of the spermatozoon to the epididymis to become a motile sperm cell

Answer 44

Spermiation

Question 45

_________release the elongated non-motile spermatozoa into the lumen of the seminiferous tubules to be transported to the epididymis where they will become motile spermatozoa

Answer 45

Sertoli cells

Question 46

Sertoli cells release the elongated non-motile ________ into the lumen of the seminiferous tubules to be transported to the epididymis where they will become motile spermatozoa

Answer 46

spermatozoa

Question 47

Sertoli cells release the elongated non-motile spermatozoa into the lumen of the ____________to be transported to the epididymis where they will become motile spermatozoa

Answer 47

seminiferous tubules

Question 48

Sertoli cells release the elongated non-motile spermatozoa into the lumen of the seminiferous tubules to be transported to the _______ where they will become motile spermatozoa

Answer 48

epididymis

Question 49

Sertoli cells release the elongated non-motile spermatozoa into the lumen of the seminiferous tubules to be transported to the epididymis where they will become motile __________

Answer 49

spermatozoa

Question 50

Sertoli cells secrete ________ to aid spermatozoa to travel from the seminiferous tubules to the rete testis in the mediastinum testis, to the efferent ducts, and finally to the epididymis via peristaltic contraction

Answer 50

testicular fluid

Question 51

Sertoli cells secrete testicular fluid to aid spermatozoa to travel from the seminiferous tubules to the rete testis in the mediastinum testis, to the efferent ducts, and finally to the epididymis via _________ ________

Answer 51

peristaltic contraction

Question 52

It is responsible for the formation of mature motile sperm cells, starting from spermatogonia

Answer 52

Spermatogenesis

Question 53

It is responsible for the formation of mature sperm cells that are not yet motile, starting from spermatids

Answer 53

Spermiogenesis

Question 54

Stages of Spermatogenesis

Answer 54

1. Spermatocytogenesis (mitotic phase) 2. Spermatidogenesis (meiotic phase) 3. Spermiogenesis and spermiation (differentiation phase)

Question 55

End product of spermatogenesis

Answer 55

Four fully-differentiated motile spermatozoa from each spermatogonium

Question 56

End product of spermiogenesis

Answer 56

One mature yet-to-be motile spermatozoon from each spermatid

Question 57

Location of Spermatogenesis

Answer 57

Seminiferous tubules, then epididymis

Question 58

Location of spermiogenesis

Answer 58

Seminiferous tubules

Question 59

Sperm shape in teleosts

Answer 59

Spheroidal

Question 60

Sperm shape in amphibians

Answer 60

Rod/ lancet- shaped

Question 61

Sperm shape in man and mammals

Answer 61

spoon-shaped

Question 62

Sperm shape in mouse and rats

Answer 62

Hooked-shaped

Question 63

Sperm according to presence of Flagella

Answer 63

Flagellated, non-flagellated

Question 64

Under Flagellated Sperm ______: majority of vertebrates

Answer 64

Monoflagellate

Question 65

Under Flagellated sperm, _______: toad and fish

Answer 65

Biflagellate

Question 66

Type of sperm ________: Ascaris, crab

Answer 66

Non-flagellated