The Male Reproductive System Flashcards

1
Q

List 3 functions of the Male Reproductive system…

A
  1. Production of androgens.
  2. Production, storage and nourishment of male gametes.
  3. Introduction of male gametes into female reproductive tract.
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2
Q

What does the term androgen mean?

A

Male sex hormone.

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3
Q

List the 5 components of the male reproductive system…

A
  1. Testes,
  2. Scrotum,
  3. Ducts,
  4. Glands,
  5. Penis.
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4
Q

List the 3 ducts in the male reproductive system…

A
  1. Epididymal duct
  2. Vas deferens
  3. Urethra
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5
Q

List the 3 glands in the male reproductive system…

A
  1. Bulbourethral
  2. Seminal vesicles
  3. Prostate
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6
Q

How big is one testis?

A

Around 4cm long and 2.5cm in diameter.

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7
Q

What separates the 2 testis in the scrotum?

A

The scrotal septum.

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8
Q

Each testis is suspended from the…

A

Spermatic cord.

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9
Q

Each testis is covered by 2…

A

Tissue layers.

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10
Q

List the 2 tissue layers that cover each testis…

A
  1. Tunica vaginalis,

2. Tunica albuginea.

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11
Q

Each testis is divided into…

A

300 testicular lobules by the tunica albuginea.

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12
Q

Each testicular lobule contains 1 to 4…

A

Seminiferous tubules.

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13
Q

Testicular tubules are the site of…

A

Spermatogenesis.

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14
Q

What is spermatogenesis?

A

The process in which spermatozoa are produced from male germ cells by way of mitosis and meiosis.

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15
Q

The seminiferous tubules walls are formed from…

A

Sertoli cells.

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16
Q

Sertoli cells secrete…

A

Nutrients for the developing sperm.

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17
Q

Define mitosis…

A

The division of a parent cell into cell into 2 daughter cells that are genetically identical to the parent cell.

18
Q

What is meiosis?

A

Meiosis takes place in germ cells to generate gametes. Gametes are produced from germ cells. Meiosis decreases the number of chromosomes.

19
Q

Spermiogenesis is the conversion of…

A

Spermatids to spermatozoa.

20
Q

Mature spermatozoa are released into…

21
Q

What is the head of the sperm called?

A

The acrosome which contains the nucleus.

22
Q

What is the middle section of the sperm called?

A

Spiral Mitochondria.

23
Q

What is the tail of the sperm called?

A

The flagellum.

24
Q

Sertoli cells are required for the maturation of…

A

Spermatozoa.

25
What do leydig cells do?
Secrete androgenic steroids near the capillaries.
26
List the 3 nutrients that sertoli secrete...
1. Inhibin 2. Androgen-binding protein. 3. Mullerian-inhibiting substance.
27
List some examples of secondary sex characteristics...
Pubic hair, facial hair, increased muscle mass.
28
What temperature are testes kept at?
35 degrees- Just below body temperature.
29
Testes are drawn closer to the body...
In a response to cold by the cremaster muscle.
30
What does the dartos muscle do?
Decreases the surface area of the testes and assist the cremaster muscle.
31
The testes can be cooled by...
Heat exchange at the pampiniform plexus.
32
What are rete testis?
Delicate tubules located in the hilum of the testicle.
33
What does the Vas deferens do?
Connects the testes with the urethera
34
What happens during a vasectomy?
The vas deferens is sectioned near the epidermis.
35
What do the seminal vesicles do?
Join vas deferens to form ejactulatory gland and produces 60% of semen volume.
36
What does the prostate gland do?
Secretion assist sperm motility and makes up 25% of semen volume.
37
Functions of the bulbourethral glands...
1. Mucus-like secretion enters the urethra during sexual arousal. 2. Neutralises urine residue.
38
List the 3 sections of the urethra...
1. Prostatic part 2. Membranous part 3. Spongy part
39
How long is the male urethra?
20cm long.
40
List the 3 regions of the penis...
1. Root 2. Shaft 3. Glans penis.