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Flashcards in Exam 3 Deck (19)
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1
Q

Where are sperm developed?

A

Testes

2
Q

Where are sperm stored?

A

Epididymis

3
Q

What are sperm transported through?

A

Vas defrens

4
Q

What is the order of sperm transport from testes to the outer world?

A

Testes-> epididymis-> ductus defrens -> ejaculatory duct -> prostatic urethra -> membranous urethra -> penile urethra-> outside world

5
Q

What are the 4 male reproductive glands?

A

Prostate
Seminal vesicles
Bulbourethral gland (Cowpers)
Urethral glands

6
Q

What stimulates spermatogonia?

A

Pituitary gonadotropic hormones

7
Q

Describe the stages of spermatogenesis?

A

spermatogonia enlarge to become primary spermatocytes
Primary spermatocytes undergo meiosis I to become secondary spermatocytes
Secondary spermatocytes complete meiosis II to become spermatids
Spermatids differentiate into spermatozoa

8
Q

What happens in meiosis I? Meiosis II?

A

Meiosis I: cells become haploid, segregation of homologous pairs

Meiosis II: separation of sister chromatids

9
Q

__________ refers to the transition between “spermatid” to mature sperm

A

Spermiogenesis

10
Q

What is does the head of the sperm consist of?

A

Condensed nucleus
Thin cytoplasm
Acrosome

11
Q

What is the acrosome derived from and what does it contain?

A

Golgi apparatus

Proteolytic enzymes hyaluronidase

12
Q

What does the tail (flagellum) consists of?

A

Central microtubule skeleton (axoneme)

Mitochondria in proximal part of the tail

13
Q

What are the 5 hormones that regulate spermatogenesis?

A
Testosterone
LH
FSH
Estrogen
Growth hormone
14
Q

_______ secretes testosterone

A

Leydig cells

15
Q

_______ is essential for growth and division of testicular germinal cells (first stage of spermatogenesis)

A

Testosterone

16
Q

What secretes LH and what is the function of LH?

A

LH is secreted by Anterior pituitary

Stimulates Leydig cells to secrete testosterone

17
Q

Where is FSH secreted from and what is its function?

A

FSH: from AP

Stimulates Sertoli cells for the process of spermatogenesis

18
Q

Sertoli cells produce small amounts of _______ from testosterone in response to ______

A

Estrogen

FSH

19
Q

________ is required for support of gonad metabolic funciton in general

A

Growth hormone