The Partial Pressure of Oxygen in Arterial Blood Is Approximately

question 104

Multiple Choice

The partial pressure of oxygen in arterial blood is approximately

• A) 40 mm Hg.
• B) 45 mm Hg.
• C) 50 mm Hg.
• D) 70 mm Hg.
• E) 100 mm Hg.

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Definitions:

Spinalis Cervicis

A neck muscle that is part of the spinalis muscle group, responsible for extending and stabilizing the cervical spine.

External Anal Sphincter

A muscle that surrounds the anus, controlling the expulsion of feces from the body.

Levator Ani Iliococcygeus

A component of the levator ani muscle, which supports the pelvic organs and helps in maintaining fecal continence.

External Urethral Sphincter

A circular muscle that controls urination by constricting or relaxing to allow the flow of urine from the bladder.