Urinary meatus

Definition

The urinary meatus is the external opening of the urethra through which urine is expelled from the body. It is a critical component in the excretion process and has a role in urogenital microbiota balance.

5 Must Know Facts For Your Next Test

1. The urinary meatus is located at the tip of the penis in males and just above the vaginal opening in females.
2. Normal microbiota at the urinary meatus include species such as Lactobacillus, which help prevent infections by outcompeting pathogens.
3. Infections at or near the urinary meatus can lead to conditions such as urethritis or cystitis.
4. The pH level around the urinary meatus can affect microbial growth, with a more acidic environment generally limiting pathogenic bacteria.
5. Proper hygiene practices are important to maintain a healthy balance of microbiota at the urinary meatus.

Review Questions

• Where is the urinary meatus located in males and females?
• What role do Lactobacillus species play at the urinary meatus?
• How can infections near the urinary meatus affect overall health?

Related terms

Urethra: A tube that connects the bladder to the urinary meatus for urine excretion.

Cystitis: Inflammation of the bladder, often caused by bacterial infection.

Lactobacillus: A genus of bacteria that are part of normal microbiota and help inhibit pathogen growth.