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
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A. 58 B. 37 C. 4 D. 1 E. 85
The pons and cerebellum arise from which secondary embryonic vesicle?
A. Telencephalon B. Diencephalon C. Mesencephalon D. Metencephalon E. Myelencephalon
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
A common reducing agent used to couple chemical reactions in cells is ________.
riboflavin niacin NADH FAD