What structure is formed by the thickening of the smooth muscle cell wall surrounding the bladder 2) that regulates the flow of urine from the bladder?

A) internal urethral sphincter
B) detrusor muscle
C) urethral muscle
D) external urethral sphincter
E) bladder sphincter


Ans: A) internal urethral sphincter

Anatomy & Physiology

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The pons and cerebellum arise from which secondary embryonic vesicle?

A. Telencephalon B. Diencephalon C. Mesencephalon D. Metencephalon E. Myelencephalon

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Which technique creates a three-dimensional dynamic image of blood vessels?

A. Dynamic spatial reconstruction B. Positron emission tomography C. Magnetic resonance imaging D. Digital subtraction angiography

Anatomy & Physiology

A common reducing agent used to couple chemical reactions in cells is ________.

riboflavin niacin NADH FAD

Anatomy & Physiology