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anatomy and phys > male reproductive system > Flashcards

male reproductive system Flashcards

1
Q

structures of the male reproductive system

A 
2x testicles 
2x vas deferens 
accessory sex glands
urethra
penis
prepuce
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2
Q

main functions of the male reproductive system

A
  • produce soerm

- produce testosterone

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3
Q

what is the inguinal canal

A

a gap in the abdominal wall that the testes descend through

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4
Q

where do testes form & where do they end up

A

form in the abdomen caudal to the kidneys and descend to the scrotum

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5
Q

what is the ligament called that pulls the testes through the inguinal canal

A

the gubernaculum

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6
Q

what is a male w one of two undescended testes called

A

a cryptorchid

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7
Q

what are the testes responsible for

A
  • producing sperm

- producing testosterone

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8
Q

what is the production of sperm called

A

spermatogenesis

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9
Q

what are tunics

A

tough while connective tissue layers that cover the testicle

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10
Q

where do the testes sit

A

outside the body in a thin sac called the scrotum

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11
Q

what are some behaviours due to testosterone

A
  • mounting & humping objects & people
  • goes looking for a mate
  • marks territory
  • in cats, urine spraying
  • becomes dominant in certain situations
  • aggression towards people & other animals
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12
Q

where does sperm production occur

A

the seminiferous tubules

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13
Q

what influences the production of sperm

A
  • testosterone levels

- temperature

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14
Q

what produces testosterone

A

interstitial cells (leydig cells) in the testes

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15
Q

what is the function of testosterone

A
  • enables sexual maturity of reproductive organs
  • necessary for maturation & viability of sperm
  • maintains accessory glands
  • promotes male behaviour & libido
  • maintains secondary sexual male characteristics
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16
Q

what is the epididymis

A
  • long, coiled tube sits alongside the outside of the testicle
17
Q

function of the epididymis

A
  • maturation of sperm occurs here

- slow transport of sperm along the tubes of the epididymis allow sperm to be stored & become mature

18
Q

function of the vas deferens

A
  • carries mature sperm from epididymis to urethra via muscle contractions
  • supplies fluid essential for nutrition & mobility of the sperm
19
Q

what is the spermatic cord

A

an enclosed sheath holding the vas deferens, together with blood vessels, nerves & lymphatics which supply the testes

20
Q

what are two accessory sex glands

A
  • prostate gland

- bulbourethral gland (only in cats)

21
Q

functions of accessory sex glands

A
  • produce & secrete fluid portion of semen, enabling transportation & nourishment of sperm
22
Q

semen =

A

sperm + spermatic fluid

23
Q

function of the penis

A
  • enables sperm to be deposited into female vagina
24
Q

anatomy of the penis

A
  • contains a bone (os penis) & erectile tissue
  • has a base & a glans
  • varies in species to accommodate in mating
  • cranial in dogs caudal in cats
25
Q

what is the bulbis glandis

A

the bulb of the penis

26
Q

function of the bulbis glandis

A
  • pushes semen out of penis

- locks into females vagina during mating (the tie)

27
Q

feature of a cat penis

A

has tiny spines to help with stimulation

28
Q

what is the prepuce

A

the haired protective sheath of skin over the tip of the penis
- protects vascular tissues of penis from trauma

29
Q

what are hormones

A

chemical messengers released into the blood producing a response.

30
Q

what hormones are involved in the male reproductive system

A
  • FSH
  • LH or interstitial cell stimulating hormone
  • testosterone
31
Q

function of FSH

A
  • responsible for stimulation of sperm production
32
Q

function of LH or ICSH

A
  • responsible for stimulating the interstitial cells to produce testosterone
33
Q

behavioural benefits to sterilisation

A
  • reduces testosterone driven behaviour
  • reduces territorial behaviour
  • reduces roaming behaviour
  • reduces aggression
34
Q

health benefits to sterilising

A
  • eliminates risk of testicular cancer
  • reduces risk of prostatic diseases
  • reduces urge to fight
  • reduces urge to look for females

anatomy and phys (7 decks)

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