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why females lack a true internal urethral sphincter muscle at the bladder neck. ?
Urethral Length: The female urethra is much shorter than the male urethra , A shorter urethra may not require the same level of muscular control at the bladder neck.
Urinary and Reproductive Functions: In females, the urethra shares space with the vagina, which is the passageway for childbirth. Having a bulky internal sphincter muscle at the bladder neck might complicate childbirth.
Hormonal Control: Females rely more on hormonal control of urination. Estrogen, for example, helps maintain the strength and elasticity of the urethral tissue, contributing to urinary continence.
TBL 1 - Quiz ( group B )
Q : compare between male’s and female’s pelves ?
Q : identify the spot .
Pelvic diameters ( conjugates )
In obstetrics , pelvic diameters are important to determine whether a pregnant woman will be able to give birth by vaginal delivery or not .
Two important pelvic conjugates used to determine whether the fetus will be able to pass through the birth canal or not :
- obstetric conjugate ( anteroposterior diameter ) : it’s a fixed diameter of 12 cm , through which the baby’s head must pass in vaginal delivery
- diagonal diameter : this is measured between the sacral promontory and the inferior margin of pubic symphysis .
This should measure about 11 cm.
If the difference between the obstetric and the diagonal conjugates was 1-1.5 cm , therefore the pregnant woman will give birth by vaginal delivery
If the difference was less than 1 cm , then the pregnant woman will have difficulty in vaginal delivery and may have to undergo a C-section in order to give birth .
هالملاحظة انذكرت بالعملي لذلك انتبهو عليها .
1)rectum
https://youtu.be/LnJ5tPAoJLg?si=X-hoF3g2Ey4flVUV
2) Anal canal
https://youtu.be/j8gOMuNktbg?si=z0B01-xtAIZwiADw
3) Urinary bladder
https://youtu.be/B7p5vy1kv98?si=eU6Hrepl5hP2GcPK
فيديوهات شرح للمحاضرة الثانية
anatomy of the pelvis
The anal columns, also known as the columns of Morgagni
The anal columns help with stool control by:
Increasing the surface area of the anal canal
Providing support for the anal sphincter muscles
Creating a seal that prevents leakage of stool.
