NEET PG DENTAL EXAM

HISTOLOGY

URINARY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the external opening of the urethra?
A
meatus
B
renal cortex
C
glomerulus
D
urethra
Explanation: 

Detailed explanation-1: -The urinary meatus, also known as the external urethral orifice, is the opening or meatus of the urethra. It is the point where urine exits the urethra in males and in females, and also where semen exits the urethra in males.

Detailed explanation-2: -The external urethral sphincter is composed of striated muscle and is located distally and inferiorly to the bladder neck in women between the vaginal orifice and clitoris. In the females, the external sphincter is also known as the urogenital sphincter and is made of 3 parts.

Detailed explanation-3: -The meatus is a slitlike orifice with its long axis in a midline sagittal plane. The urethral meatus is slightly ventral to the tip of the penis. The bulbous urethra is invested in the bulb of the penis, the portion of corpus spongiosum that lies between the split corpora cavernosa in the superficial perineal space.

Detailed explanation-4: -The meatus (mee-AY-tis) is the opening in a boy’s penis where the urine (pee) comes out.

There is 1 question to complete.