In the majority of cases, incontinence is caused by a weakening of the pelvic floor muscles that keep the urethra closed. Whenever they lose their elasticity, everyday activities such as laughing, coughing, lifting and running can cause a urine leak.
The respiratory system consists of a group of ducts that are capable of filtering air from the environment before entering the pulmonary system.
_____ 1. Air enters the nasal cavity of the respiratory system through the _1_. The nasal cavity is divided by the midline _2_. The nasal cavity mucosa has several functions.____ 1. Air enters the nasal cavity of the respiratory system through the _1_. The nasal cavity is divided by the midline _2_. The nasal cavity mucosa has several functions.