Answer:
The correct option is : c. external sphincter muscle of the bladder
Explanation:
The process of excretion of urine from the urinary bladder to outside the body through the urethra is known as Micturition. The other names for micturition are urination and voiding.
In a normal human being, the process of micturition requires both the voluntary and involuntary nervous system components.
The external sphincter is a voluntary muscle. For urination to occur the external sphincter muscle must be relaxed.
Therefore, the process of voiding urine begins if the external sphincter muscle relaxes voluntarily.
Answer: C. the first heart sound.
Explanation:
The valves open and close due to undue pressure difference of blood across these valves. The AV or atrioventricular valve separates the atrium from the ventricles on each half of the heart.
The closure of the AV valve will result in the production of the first sound of the heart. The AV valve prevent the back flow of blood to the atria.
ABG results that are most consistent with this diagnosis are:
- pH of the patient : 7.20
- Pa
of patient is low : 65 mm Hg
- 
of patient : 26 mEq/L
<h3>What is ABG?</h3>
- An arterial blood gas (ABG) test, which draws blood from an artery in your body, determines the levels of oxygen and carbon dioxide in your blood.
- The pH balance, sometimes referred to as the acid-base balance, of your blood is also examined during the test.
- The National Institute of Health lists the following as typical normal values: pH: 7.35-7.45.
- Oxygen partial pressure (Pa
) ranges from 75 to 100 mmHg. Carbon dioxide (Pa) partial pressure ranges from 35 to 45 mmHg.
- The blood gas test can reveal how efficiently your lungs can introduce oxygen into the blood and expel carbon dioxide.
Learn more about ABG here:
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