C25 - Ovaries, uterine tube, their suspension, blood supply and innervation

Question 1

Structures to mention

Answer 1

Ovarium:

• Hilus ovarii (Attachent of mesovarium and entvance of ovarian vessels)
• Facies medialis
• Facies lateralis
• Fossa ovarii (eq) (Depression on the free border where ovulation occurs)
• Margo mesovaricus (End nearer to the infundibulum tubae)
• Extremitas tubaria (End nearer to the infundibulum tubae)
• Extremitas uterina (End attached to the uterus by lig. ovarii proprium)
• Margo limitans peritonei (Terminal border of the peritoneum. The line of attachment of the mesovarium to the ovary)
• Tunica albuginea (White capsule of the ovary)
• Cortex ovarii [= Zona parenchymatosa]
• Medulla ovarii [= Zona vasculosa]
• Stroma ovarii (Connective tissue of the ovary)
• Folliculi ovarici
• Corpus luteum (Yellow body)
• Corpus albicans (White body, remaining after degeneration of corpus luteum)
• Lig. ovarii proprium (Covered with peritoneum between extremitas uterina ovarii → apex of the uterine horn)
• Lig. suspensorium ovarii (Free border of the mesovarium)
• Mesovarium (Part of lig. latum attached to the ovary)
  
  • Mesovarium proximale (From abdominal wall → mesosalpinx)
  • Mesovarium distale (From mesosalpinx → ovary)
• Bursa ovarica (Cavity enclosed by mesosalpinx, distal mesovarium and ovary)

Tuba uterina:

• Ostium abdominale tubae uterinae (Abdominal opening of tuba uterina in infudibulum)
• Infundibulum tubae uterinae (Funnel shaped ovarian end of the tube)
  
  • Fimbriae tubae (Fringe processes around the opening of infundibulum)
• Ampulla tubae uterinae (Wide part from the abdominal opening to the isthmus)
• Isthmus tubae uterinae (Narrow portion leading to uterus)
• Pars uterina (eq, ca) (Part of the tube in the wall of the uterus in distinct and ends on a papilla)
• Ostium uterinum tubae (Uterine orifice of the tube)
• Mesosalpinx

Question 2

Ovaries

Give the interspecies differences

Answer 2

• Fossa ovarii (eq)

Shape:

• Ø eq: ellipsoidal
• Eq: kidney shaped, regular surface

Question 3

Tuba uterina

Give the interspecies differences

Answer 3

• Pars uterina (eq, ca)

Question 4

Ovaries

Location

Answer 4

• Car: Dorsal part of abdomen, caudal to the kidneys
• Ru: Close to ventral abdominal wall
• Su: Middle of abdomen

Question 5

Ovaries

Give the layers

Answer 5

• Tunica albuginea
  
  • ​Outermost layer
  • Dense white capsule
• Cortex: Zona parechymetosa
  
  • ​Contains follicles and corpus luteum
• Medulla: Zona vasvulosa
  
  • Central
  • ​Contains blood vesses, nerves and lymphatics
• Eq: the structure of the ovary is reversed, zona parenchymetosa forms the center

Question 6

Ovaries

Draw the ovary

Answer 6

Question 7

Tuba uterina

Function

Answer 7

• Receive and transport oocyte to the uterus
• Site of fertilization

Question 8

Tuba uterina

Draw tuba uterina

Answer 8

Question 9

Suspension

Answer 9

• Ovaries:
  
  • Mesovarium
    
    • ​Cranial part of lig. latum uteri attaches to the ovary and is called mesovarium
  • Lig. ovarii proprium
    
    • ​​Ovary → cornu uteri
  • Lig. suspensorium ovari
    
    • ​Free border of mesovarium
    • Contains a. ovarica
• Tuba uterina:
  
  • Mesosalphinx
    
    • Peritoneal fold
    • Arise from lateral surface of mesovarium
    • Eq: too small to contain ovary
    • Ru, su, ca: envelope ovary
• Mesovarium and mesosalphix are cranial parts of lig. latum uteri

Division of lig. latum uteri:

• Lig. latum uteri
  
  • ​Mesometrium (Attaches uterua and vagina)
  • Mesosalphinx
  • Mesovarrium
    
    • ​Mesovarium proximale (Abdominal wall → mesosalphinx)
    • Mesovarium distale (Mesosalphinx → ovary)

Question 10

Bursa ovarica

Answer 10

• Cavity enclosed by:
  
  • Mesosalpinx
  • Mesovarium
  • Ovary

Question 11

Blood supply

Answer 11

​__Ovary:

• Aorta abdominalis → a. ovarica
• V. ovarica
  
  • ​Ca:
    
    • Left: ex v. renalis sinistra
    • Right: ex vena cava caudalis

Tuba uterina

• Aorta abdominalis → a. ovarica → r. tubarius

Question 12

Innervation

Answer 12

• Parasympathetic:
  
  • ​Plexus sympatheticus
    
    • Pelvic nerves from sacral outflow
• ​​​Sympathetic:
  
  • ​Plexus sympatheticus
    
    • ​Ggl. mesentericum caudalis & plexus
      
      • ​N. hypogasticus
      • Pelvic plexus

Question 13

Comparison of analog mesentery and ligaments of the female ovary and male testis

Answer 13