Ch 18

Urine ejection cannot occur unless which event(s) takes place?

Both the internal and external urethral sphincters are relaxed

The renal pyramid is

a conical-shaped structure that is located in the renal medulla

The primary function of the proximal convoluted tubule is

absorption of ions, organic molecules, vitamins, and water

Renal columns are

bands of the renal cortex that extend toward the renal sinus

The ________ temporarily stores urine prior to elimination.

bladder

The detrusor muscle

compresses the urinary bladder and expels urine through the urethra

The portion of the nephron that attaches to the collecting system is the

distal convoluted tubule

Which of the following is not a process that occurs in the nephron?

gas exchange

The cup-shaped chamber, or the expanded end of a nephron, is known as the

glomerular capsule

Which process is the vital first step essential to all kidney functions?

glomerular filtration

Which of the following are components of a renal corpuscle?

glomerulus and glomerular capsule

The renal ________ is the site at which the renal artery and renal nerve enter and the renal vein exits

hilum

Major calyces are

large branches that combine to form the renal pelvis

Water reabsorption occurs passively through the process of ________.

osmosis

The kidneys

produce urine

Reabsorption of glucose occurs mostly in the

proximal convoluted tubule

The large, funnel-shaped chamber that connects to the ureter is called the

renal pelvis

The ureters and urinary bladder are lined by

transitional epithelium

Which of the following transports urine from the kidney toward the bladder?

ureter

Organs of the urinary system that are actively involved with urine transport are the

urethra and ureters

Urine is temporarily stored by the

urinary bladder