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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 D

Explanation

A. Epididymis: The epididymis is where sperm mature and are stored. It is not cut during a vasectomy.

B. Tunica albuginea: This is the connective tissue surrounding the testis, not part of the sperm-carrying duct system.

C. Efferent ductules: These ducts transport sperm from the testis to the epididymis, but they are not cut during a vasectomy.

D. Ductus deferens: The ductus deferens (vas deferens) is the tube that carries sperm from the epididymis to the ejaculatory duct. It is cut and sealed during a vasectomy, preventing sperm from reaching the urethra.

Correct Answer is B

Explanation

A. To increase the effectiveness of drugs and hormones in the blood: Tubular secretion helps in removing drugs and hormones, not increasing their effectiveness.

B. To remove excess quantities of substances from the blood: Tubular secretion is responsible for removing excess ions, waste products, and drugs from the blood and excreting them into the urine.

C. To filter out pathogens from the blood: Filtration primarily occurs at the glomerulus, not tubular secretion, and it does not focus on pathogens.

D. To remove 99% of the water from the blood: This is not the purpose of tubular secretion; water reabsorption primarily happens in the nephron’s other parts.

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