Brainscape's Knowledge GenomeTM

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


See full index

Anatomy > Male reproductive system > Flashcards

Male reproductive system Flashcards

1
Q

Where do the testes move in development

A

testes begin to move toward the scrotum (inguinal region)
they pull blood supply and innervation

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

Month 3 in development

A

the testes located close to the inguinal region, an increase in testosterone encourages the gubernaculum to shorten and draw the testis into the scrotum

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

Gubernaculum

A

a fibrous cord that attaches to the inferior portion of the testis and the floor of the developing scrotal sac

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

Processus vaginalis

A

an outpouching of the peritoneal lining in the abdomen

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

Passage of the testis

A

happens well before birth in most cases but in premature birth it can happen after birth

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

What does the testis pull with it?

A

layers of the abdominal body wall but there is no transverse abdominis in the scrotum

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

Where did the male ducts arise from?

A

degraded mesonephric duct

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

Where must the testis pass through in development?

A

the testis must pass thru the deep body wall to the scrotum forming the inguinal canal as it descends

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

Scrotum

A

a sac of skin that extends external to the abdominopelvic cavity

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

What muscles in the scrotum provide temperature regulation?

A

the dartos and cremaster muscle respond to changes in external temperature

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

Seminiferous tubules

A

sites of sperm production

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

Epididymis

A

an organ where sperm mature

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

How does sperm travel through the male ducts?

A

Seminiferous tubules
epididymis
ductus deferens
ejaculatory duct
urethra

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

What accessory sex glands contribute secretions to sperm?

A

Seminal vesicles
prostate gland
bulbourethral glands

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

Seminal glands

A

elongated structures that lie between the fundus of the bladder and rectum

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

What do the seminal glands secrete?

A

Secretes a thick alkaline fluid that mixes with sperm as they pass into the ejaculatory ducts and urethra

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

What do the secretions from the seminal glands contain?

A

Fructose and other nutrients to nourish sperm
Other substances to enhance fertilization
Provides energy for sperm to survive female reproductive tract

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

Ejaculatory ducts

A

slender tubes that arise by the union of the duct of a seminal gland with the ductus deferens near the neck of the bladder

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

Prostate gland

A

encircles the prostatic urethra

20
Q

Prostatic secretions

A

1/3 if semen volume and contain enzymes that enhance sperm motility

21
Q

Bulbourethral glands

A

inferior to the prostate, secrete mucus

22
Q

Bulbourethral glands

A

two pea-sized bulb-urethral glands are situated posterolateral to the intermediate part of the urethra

23
Q

Where do the bulbourethral glands pass through?

A

Their ducts pass thru the perineal membrane with the intermediate urethra and open thru very small apertures into the proximal part of the spongy urethra in the bulb of penis

24
Q

What kind of secretions do the bulbourethral glands produce?

A

secretions are mucus-like and enter the urethra during sexual arousal
a basic solution that neutralizes traces of acidic urine

25
Q

Penile structure

A

three cylindrical bodies of erectile cavernous tissue:
corpus spongiosum
corpora cavernosa

26
Q

Glans penis

A

expanded tip of the penis surrounding the urethral opening, continuous with the corpus spongiosum

27
Q

Prepuce (foreskin)

A

loose fold of skin surrounding the glans to a variable extent

28
Q

Corpus spongiosum

A

single cylindrical body
surrounds the urethra, enlarged proximally (root, covered y the bulbospongiosus muscle), and distally (glans)

29
Q

Corpora cavernosa

A

paired cylindrical body
covered by the ischiocavernosus muscles

30
Q

Ischiocavernosus (muscle)

A

prevents outflow of blood/erection

31
Q

Bulbospongiosus (muscles)

A

expels last drop of urine/semen
hardens erection

32
Q

What is the crus composed of?

A

corpora cavernosum

33
Q

What is the bulb composed of?

A

corpus spongiosum

34
Q

Parasympathetic nervous system

A

pro-erection

35
Q

Sympathetic nervous system

A

pro-detumescence

36
Q

What does the parasympathetic nervous system allow for?

A

relaxation of smooth muscle and blood flows into the erectile tissues

37
Q

What do the bulbourethral glands and vestibular glands secrete when stimulated by the parasympathetic nervous system?

A

secrete mucous, resulting in lubrication of the vaginal orifice in the female and the production of pre-ejaculatory fluid in the male

38
Q

Erections in both genders have…

A

reflexogenic (stimulation)
psychogenic (thought induced)
nocturnal (REM sleep)

39
Q

What are the two phases of ejaculation?

A

emission
expulsion

40
Q

Emission (the sympathetic nervous system)

A

closes the neck of the bladder preventing retrograde ejaculation
contracts smooth muscle in the epididymis, ductus deferens, seminal vesicles and prostate to coordinately release their secretions into the urethra

41
Q

Expulsion (somatic nervous system)

A

Coordinated, rhythmic contraction of the muscle in the bladder neck, external urethral sphincter, urethra, bulbospongiosus and pelvic striated muscles to propel semen thru the urethra

42
Q

Hypospadias

A

In hypospadias, fusion of the urethral folds is incomplete and abnormal openings of the urethra occur along the inferior aspect of the penis

43
Q

Hydrocele and hematocele

A

fluid of blood accumulation in the processus vaginalis

44
Q

Testicular torsion

A

a twisting or torsion of the spermatic cord can dramatically affect blood supply to the testicle and surrounding tissues

45
Q

Circumcision

A

The cutting away and removal of the prepuce (foreskin)

46
Q

Phimosis/paraphimosis

A

Phimosis is present when the foreskin cannot retract normally comfortably over the glans
Paraphimosis occurs when a retracted foreskin gets caught behind the glans and cannot be moved

47
Q
A

Anatomy (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions