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Which part of the urinary system has detrusor muscle in it?

A.

Urinary Bladder

B.

Ureter

C.

Renal Artery

D.

Kidney

Answer and Explanation

The Correct Answer is A

A. Urinary Bladder: The urinary bladder is composed of smooth muscle, including the detrusor muscle, which contracts to expel urine during urination. The detrusor muscle allows the bladder to stretch as it fills with urine and contract when it's time to empty.

B. Ureter: The ureters are muscular tubes that transport urine from the kidneys to the bladder but do not contain detrusor muscle. They have a different type of smooth muscle that aids in peristalsis.

C. Renal Artery: The renal artery is a blood vessel that supplies blood to the kidneys and does not contain muscle tissue like the detrusor muscle.

D. Kidney: The kidneys are organs that filter blood to produce urine but do not contain detrusor muscle. They consist mainly of nephron structures for filtration and reabsorption.

 


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Related Questions

Correct Answer is C

Explanation

A. Increased afterload: Increased afterload, the resistance the heart must overcome to eject blood, typically reduces stroke volume because the heart has to work harder to push blood against higher pressure.

B. Decreased heart contractility: This would reduce stroke volume, as the heart would be less effective at pumping blood.

C. Increased preload: Preload refers to the volume of blood in the ventricles at the end of diastole. An increased preload stretches the heart muscle, which typically leads to a stronger contraction and higher stroke volume.

D. Decreased blood pressure: While low blood pressure may reduce afterload, it doesn't directly increase stroke volume unless other factors are at play.

Correct Answer is A

Explanation

A. This allows for rapid exchange of oxygen and nutrients: Capillaries have thin walls (one cell thick) to facilitate the rapid diffusion of gases (oxygen and carbon dioxide), nutrients, and waste products between blood and tissues.

B. This allows for red blood cell formation to occur: Red blood cells are formed in the bone marrow, not in capillaries.

C. There is no blood pressure within the capillaries: There is still blood pressure within capillaries, although it is lower than in arteries, so this is incorrect.

D. Blood does not travel through capillaries: Blood does indeed travel through capillaries as part of the circulatory system.

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