B17 - Pelvic arteries

Question 1

Give the main branches of the pelvic arteries

Answer 1

1. ​A. iliaca interna​
2. A. glutea caudalis
3. A. pudenda interna

Question 2

A. iliaca interna

Answer 2

• Arises from aorta abdominalis
• Goes into the pelvic cavity
• After several branches, the artery divides into:
  
  • A. glutea caudalis
  • A. pudenda interna

Question 3

A. glutea caudalis

Answer 3

• One of the terminal branches of a. iliaca interna (the other one is a. pudenda interna)
• Branches:
  
  • Ca:
    
    • A. iliolumbalis
    • A. glutea cranialis
    • A. caudalis lateralis superficialis
    • A. perinealis dorsalis
    • A. comitans n. ischiadici
  • Sus:
    
    • A. rectalis caudalis
  • Eq:
    
    • A. glutea cranialis
    • (a. iliolumbalis and a. obturatoria may arise)
    • Rr. sacrales (3-4 rami into sacrum)
      
      • A. caudalis mediana
      • A. caudalis centrolateralis

Question 4

A. pudenda interna

Answer 4

• Second terminal branch of a. iliaca interna (the other is a. glutea caudalis)
• Terminal division at pelvic exit into:
  
  • A. perinealis ventralis
    
    • ​A. rectalis caudalis (→ anus)
    • R. scrotalis dorsalis (male ca sus, → scrotum wall)
    • R. labialis dorsalis (female, → labia of vulva)
  • A. penis (male)
    
    • A. bulbi penis (→ corpus spongiosum penis)
    • A. profunda (→ corpus cavernosum)
    • A. dorsalis penis (→ runsa along the dorsum of penis to the tip)
      
      • Ca: anastamose with r. praeputalis ex a. pudenda externa)
      • Eq: reccives a. penis media and a. penis cranialis)
  • A. clitoris (​female, mare: a. bulbi vestibularis)
    
    • A. bulbi vestibuli
    • A. profunda clitoridis (→ erectile tissue of clitoris)
    • A. dorsalis clitoridis (→ erectile tissue of clitoris)

Question 5

Visceral arteries

Name the main branches of the visceral arteries

Answer 5

1. A. umbilicalis
   
   • ​​A. ductus deferenti (male, ø ca)
   • A. uterina (female, eq: ex a. iliaca interna)
2. A. prostatica
   
   • ​​A. ductus deferentis
     
     • A. visceralis caudalis
     • A. utericus
3. A. vaginalis
   
   • ​​A. uterina
   • A. rectalis media
   • A. perinealis dorsalis
4. A. urethralis
5. A. vestibularis (eq: r. vestibularis)

Question 6

Visceral arteries

A. umbilicalis

Answer 6

• Arises from a. iliaca interna (ca, ru, sus)
• Arises from a. pudenda interna ex a. iliaca externa (eq)
• Runs towards the apex of the bladder
• ​Branches:
  
  • ​A. ductus deferntis (male, eq, ru, sus)
    
    • → plica genitalis and supplies ductus deferentis
    • Anastamoses with:
      
      • Rr. ductus deferentis ex r. epididymis ex a. testicularis
      • R. ductus deferentis ex a. prostatica
  • A. uterina (female, eq: ex a. iliaca externa)
    
    • Divideds in lig. latum uteri into several branches
      
      • Supplies cornu uteri
  • R. utericus (may arise from a. uterina in females)
  • A. vesicalis cranialis (ø ca)

Question 7

Visceral arteries

A. prostatica

Answer 7

• Male eq, sus: ex a. pudenda interna
• Male ru, sus??: ex a. iliaca interna
• Runs along the pelvic peritoneum in the direction of the prostatae
• Branches:
  
  • R. ductus deferentis (ca: a. ductus deferentis)
    
    • A. vesicalis caudalis (→ urinary bladder)
      
      • R. uretericus (→ ureter)
  • A. rectalis medialis (→ ampulla)
  • R. urethralis (ø eq) (→ pelvic part of urethra)

Question 8

Visceral arteries

A. vaginalis

Answer 8

• Analogous in females to a. prostatica in males
• Eq, ca: ex a. pudenda interna
• Branches:
  
  • R. uterinus (ca: a. uterina) (→ lateral wall of vagina to cervix uteri)
    
    • A. vesicalis caudalis (→ urinary bladder)
  • A. rectalis media
  • A. perinealis dorsalis (ru, sus)