Med termch7

The Language Of The Language Of MedicineMedicine

1010thth edition editionDavi-Ellen ChabnerDavi-Ellen Chabner

Chapter 7 Urinary System

Chapter Goals

Name essential organs of the urinary system and describe their locations and functions.

Identify common pathological conditions.

Recognize how urinalysis is used and interpreted as a diagnostic test.

Define urinary-system-related combining forms, prefixes, and suffixes.

Chapter Goals (cont’d)

List and explain clinical procedures, laboratory tests, and abbreviations that pertain to the urinary system.

Understand medical terms in their proper contexts, such as medical reports and records.

Chapter 7 Lesson 7.1

Introduction

Nitrogenous wastes Urea

Creatinine

Uric acid

Introduction (cont’d) Functions of the kidney

Filter nitrogenous wastes to form urine; about 200 quarts of blood are filtered every day to form 2 quarts of urine

Maintain proper balance of water, electrolytes (sodium, potassium), and acids

Release hormones:Renin: enzymatic hormone important in adjusting blood

pressureErythropoietin (EPO): hormone that stimulates red

blood cell production in the bone marrowCalciferol: active form of vitamin D necessary for the

absorption of calcium from the intestine

Degrade and eliminate hormones from the bloodstream

Anatomy of the Major Organs

Organs of the urinary system in a male

Anatomy of the Major Organs (cont’d)Organs of the urinary

system in a male

Anatomy of the Major Organs (cont’d)

Female urinary system

Anatomy of the Major Organs (cont’d)

Female urinary system

QUICK QUIZ:

1. What is voiding?

A. Nitrogenous waste

B. Urination

C. Outer section of the kidney

D. Triangular area in the bladder

How Kidneys Produce Urine

Blood enters the kidneys through the right and left renal arteries

Arterioles carry blood to the capillaries

Glomeruli filter the blood

How Kidneys Produce Urine (cont’d) Blood enters the

kidneys through the right and left renal arteries

Arterioles carry blood to the capillaries

Glomeruli filter the blood

How Kidneys Produce Urine (cont’d)

Blood passes through the glomeruli

Glomerular (Bowman) capsule surrounds each glomerulus

Renal tubule is attached to each Bowman capsule

Glomerulus and glomerular/Bowman capsule

Blood passes through the glomeruli

Glomerular (Bowman) capsule surrounds each glomerulus

Renal tubule is attached to each Bowman capsule

Glomerulus and glomerular/Bowman capsule

Three steps in the formation of urineGlomerular filtrationTubular reabsorptionTubular secretion

The glomerulus and a renal tubule combine to form a unit called a nephron.

QUICK QUIZ:

2. Approximately how many nephrons are in a kidney?

A. 100,000,000

B. 10,000,000

C. 1,000,000

D. 100,000

How Kidneys Produce Urine

All collecting tubules lead to the renal pelvis

Calyces or calices are small, cup-like regions of the renal pelvis; the term comes from the Greek, kalux, meaning a cup or case surrounding a flower bud

Illustration shows section of kidney

How Kidneys Produce Urine (cont’d)All collecting tubules lead to the renal pelvis

Calyces or calices are small, cuplike regions of the renal pelvis; the term comes from the Greek, kalux, meaning a cup or case surrounding a flower bud

Illustration shows section of kidney

Process of forming and expelling urine

Vocabulary

arteriole

calyx or calix

Vocabulary (cont’d)

arteriole

calyx or calix

Small artery

Cuplike collecting region of the renal pelvis; the term comes from the Greek, kalux, meaning a cup or case surrounding a flower bud

catheter

cortex

creatinine

catheter

cortex

creatinine

Tube for injecting or removing fluids

Outer region of an organ

Nitrogenous waste excreted in urine

electrolyte

erythropoietin (EPO)

electrolyte

erythropoietin (EPO)

Chemical element that carries an electrical charge when dissolved in water.

Hormone secreted by the kidney to stimulate production of red blood cells by bone marrow;

-poietin means a substance that forms.

filtration

glomerular

capsule

glomerulus

filtration

glomerular

capsule

glomerulus

Process whereby some substances pass through a filter

Enclosing structure surrounding each glomerulus; also called Bowman capsule

Tiny ball of capillaries in the kidney

Depression in the part of an organ where blood vessels and nerves enter and leave; comes from the Latin meaning a small thing

kidney

meatus

medulla

kidney

meatus

medulla

One of two bean-shaped organs that filter nitrogenous waste from the bloodstream to form urine

Opening or canal

Inner region of an organ; the term comes from the Latin, medulla, meaning marrow

nephron

nitrogenous waste

nephron

nitrogenous waste

The functional unit of the

kidney where filtration,

reabsorption, and secretion

take place

Substance containing nitrogen

and excreted in urine;

examples are urea, uric acid,

and creatinine

potassium (K+)

reabsorption

renal artery

potassium (K+)

reabsorption

renal artery

An electrolyte regulated by the kidney

Renal tubules return materials necessary to the body back into the bloodstream

Blood vessel that carries blood to the kidney

renal pelvis

renal tubules

renal vein

renal pelvis

renal tubules

renal vein

Central collection region in the kidney

Microscopic tubes in the kidney where urine is formed after filtration

Blood vessel that carries blood away from the kidney

sodium (Na+)

trigone

sodium (Na+)

trigone

Hormone secreted by the kidney that raises blood pressure

An electrolyte regulated in the blood and urine by the kidneys; a common form of sodium is sodium chloride (salt)

Triangular area in the urinary bladder

ureter

urethra

ureter

urethra

Major nitrogenous waste excreted in urine

One of two tubes leading from the kidneys to the urinary bladder

Tube leading from the urinary bladder to the outside of the body

uric acid

urinary bladder

urination (voiding)

uric acid

urinary bladder

urination (voiding)

Nitrogenous waste product excreted in the urine

Hollow, muscular sac that holds and stores urine

Process of expelling urine; also called micturition

Terminology: Structures,Substances, and Urinary SymptomsSTRUCTURES

cali/o, calic/o _________

cyst/o _________

glomerul/o _________

meat/o _________

Combining FormCombining Form Meaning Meaning

Terminology: Structures,Substances, and Urinary Symptoms (cont’d)

STRUCTURES

cali/o, calic/o calyx (calix); cup-shaped

cyst/o urinary bladder

glomerul/o glomerulus

meat/o meatus

STRUCTURES

cyst/o cystitis

________________

Combining Form Terminology MeaningCombining Form Terminology Meaning

Terminology: Structures,Substances, and Urinary

Symptoms (cont’d)

Bacterial infections often

cause acute or chronic

cystitis. In acute cystitis, the

bladder contains blood as a

result of mucosal hemorrhage

(see figure, Acute cystitis).

STRUCTURES

cyst/o cystitis inflammation of the urinary bladder

Combining Form Terminology MeaningCombining Form Terminology Meaning

Bacterial infections often

cause acute or chronic

cystitis. In acute cystitis, the

bladder contains blood as a

result of mucosal hemorrhage

(see figure, Acute cystitis).

Terminology: Structures,Substances, and Urinary

Symptoms (cont’d)

Terminology: Structures,Substances, and Urinary Symptoms (cont’d)STRUCTURES

nephr/o ___________

pyel/o ___________

ren/o ____________

trigon/o ____________

nephr/o kidney

pyel/o renal pelvis

ren/o kidney

trigon/o trigone

Combining Form MeaningCombining Form Meaning

STRUCTURES

nephr/o hydronephrosis _________________

Combining Form TerminologyCombining Form Terminology MeaningMeaning

Obstruction of urine flow may be

caused by renal calculi (stones) as

shown in the figure. Notice the buildup

of excess fluid in the kidney.

nephr/o hydronephrosis Condition of excess fluid (water) in the kidney

Combining Form TerminologyCombining Form Terminology MeaningMeaning

Obstruction of urine flow may be

caused by renal calculi (stones) as

shown in the figure. Notice the buildup

of excess fluid in the kidney.

ureter/o __________

urethr/o __________

vesic/o __________

ureter/o ureter

urethr/o urethra

vesic/o urinary bladder

Terminology: Structures,Substances, and Urinary Symptoms (cont’d)SUBSTANCES and SYMPTOMS

albumin/o ________

azot/o ________

bacteri/o ________

dips/o ________

SUBSTANCES and SYMPTOMS

albumin/o albumin

azot/o nitrogen

bacteri/o bacteria

dips/o thirst

Terminology: Structures, Substances, and Urinary Symptoms (cont’d)

kal/o __________

ket/o, keton/o __________

lith/o __________

natr/o __________

noct/o __________

olig/o ________

Combining Form or SuffixCombining Form or Suffix Meaning Meaning

kal/o potassium

ket/o, keton/o ketone bodies

lith/o stone

natr/o sodium

noct/o night

olig/o scanty

Combining Form or SuffixCombining Form or Suffix MeaningMeaning

Terminology: Structures,Substances, and Urinary Symptoms (cont’d)SUBSTANCES and SYMPTOMS

-poietin __________

py/o __________

-tripsy __________

ur/o __________

-uria __________

urin/o __________

-poietin substance that forms

py/o pus

-tripsy to crush

ur/o urea

-uria urination; urine

condition

urin/o urine

Urinalysis

Tests included in a urinalysis

1. Color

2. Appearance

4. Protein

5. Glucose

Urinalysis (cont’d)

Tests included in a urinalysis

6. Specific gravity

7. Ketone bodies

8. Sediment

9. Phenylketonuria

10. Bilirubin

QUICK QUIZ:

3. In a urinalysis, what does the test of specific gravity reflect?

A. The chemical nature of urine

B. The presence of albumin

C. Blood in the urine

D. The amount of wastes, minerals, and solids in the urine

Chapter 7Lesson 7.2

Pathologic Conditions

Kidney

Glomerulonephritis

Interstitial nephritis

Nephrolithiasis

Nephrotic syndrome

Polycystic kidneys (PKD)

Pathologic Conditions

Kidney

Polycystic

kidney

disease (PKD)

PKD—The kidneys contain masses of cysts. Typically polycystic kidneys weigh 20 times more than their usual weight.

Pathologic Conditions (cont’d)

Kidney

Pyelonephritis

Renal cell carcinoma

Renal failure

Renal hypertension

Wilms tumor

Pathologic Conditions (cont'd)

Kidney

Renal cell

carcinoma

(Hypernephroma)

Cancerous tumor

of the kidney

in adulthood

Pathologic Conditions (cont’d)

Urinary bladder

Bladder cancer

Associated conditions

Diabetes insipidus (DI)

Diabetes mellitus (DM)

QUICK QUIZ:

4. A term that means frequent (voluntary) urination at night is:

A. anuria

B. nocturia

C. diuresis

D. hematuria

Laboratory Tests and Clinical Procedures

Laboratory tests

Blood urea nitrogen (BUN)

Creatinine clearance test

Laboratory Tests and Clinical Procedures (cont’d)

Clinical procedures

X-ray Studies CT urography

Kidneys, ureters, and bladder (KUB)

Renal angiography

Retrograde pyelogram (RP)

Voiding cystourethrogram (VCUG)

CT-Computed tomography

The scan with contrast shows a benign cyst on the kidney.

Voiding cystourethrogram

(VCUG)showing a normal female urethra. The bladder is filled with contrast material, followed by x-ray imaging.

Clinical procedures

Ultrasound examination Ultrasonography: imaging urinary tract structures

using high frequency sound waves

Radioactive studies Radioisotope scan: image of kidney after injecting a

radioisotope into the bloodstream

Clinical procedures

Magnetic imaging

Magnetic resonance imaging (MRI) urography:

A changing magnetic field produces images of an organ and surrounding structures in three planes of the body

Other clinical procedures Cystoscopy Dialysis Lithotripsy Renal angioplasty Renal biopsy Renal transplantation Urinary catheterization

Cytoscopy—direct visual examination of urinary bladder with an endoscope

Hemodialysis (HD)

Continuous ambulatory peritoneal dialysis (CAPD)

Abbreviations

ADH _______________ AKI _______________ ARF _______________ BILI _______________ BUN _______________ Ccr _______________ CAPD _______________ Cath _______________ CCPD _______________ CKD _______________

ADH Antidiuretic hormone ARF Acute renal failure AKI Acute renal injury BILI Bilirubin BUN Blood urea nitrogen Ccr Creatinine clearance CAPD Continuous ambulatory peritoneal

dialysis Cath Catheter; catheterization CCPD Continuous cycling peritoneal dialysis CKD Chronic kidney disease

Abbreviations (cont’d)

CL- _____________________ CrCl _____________________

CRF _____________________

C & S _____________________

Cysto _____________________

eGFR _____________________

ESRD _____________________

ESWL _____________________

HCO3- _____________________

HD _____________________

IC _____________________

CL- Chloride, a kidney excretion

CrCl Creatinine clearance

CRF Chronic renal failure

C&S Culture and sensitivity testing

Cysto Cystoscopic examination

eGFR Estimated glomerular filtration rate

ESRD End-stage renal disease ESWL Extracorporeal shockwave lithrotripsy HCO3

- Bicarbonate, an electrolyte conserved by the kidney

HD Hemodialysis IC Interstitial cystitis, chronic inflammation of the bladder

IVP __________________ K+ __________________ KUB __________________ Na+ __________________ PD __________________ pH __________________ PKU __________________ sp gr __________________ UA __________________ UTI __________________ VCUG __________________

IVP Intravenous pyelogram K+ Potassium, an electrolyte KUB Kidney ureter and bladder Na+ Sodium, an electrolyte PD Peritoneal dialysis pH Potential hydrogen; degree of acidity or

alkalinity PKU Phenylketonuria sp gr Specific gravity UA Urinalysis UTI Urinary tract infection VCUG Voiding cystourethrogram

QUICK QUIZ:

5. The abbreviation RP is associated with which of the following?

A. Fluid is injected into the peritoneal cavity and then drained out.

B. Contrast is injected into the urinary bladder and ureters, and x-rays are

taken of the urinary tract.

C. Nitrogenous wastes are removed from

the patient’s blood.D. An electrolyte is secreted by renal tubules.

Review Sheet Combining forms albumino/o ____________

angi/o ____________

azot/o ____________

bacteri/o ____________

cali/o, calic/o ____________

cyst/o ____________

Review Sheet (cont’d) Combining forms albumino/o albumin (protein)

angi/o vessel (blood)

azot/o urea; nitrogen

bacteri/o bacteria

cali/o, calic/o calyx (calix); cup-shaped

cyst/o urinary bladder

dips/o ____________

glomerul/o ____________

glycos/o ____________

hydr/o ____________

isch/o ____________

kal/o ____________

ket/o; keton/o ____________

Review Sheet (cont’d) Combining forms

dips/o thirst

glomerul/o glomerulus

glycos/o sugar

hydr/o water

isch/o to hold back; back

kal/o potassium

ket/o; keton/o ketones; acetones

lith/o ____________

meat/o ____________

natr/o ____________

necr/o ____________

nephr/o ____________

noct/o ____________

ogli/o ____________

lith/o stone

meat/o meatus

natr/o sodium

necr/o death

nephr/o kidney

noct/o night

ogli/o scanty

Review Sheet (cont’d)

Combining forms

py/o __________

pyel/o __________

ren/o __________

trigon/o __________

ur/o __________

py/o pus

pyel/o renal pelvis

ren/o kidney

trigon/o trigone

ur/o urine; urinary tract

ureter/o ____________

urethr/o ____________

urin/o ____________

vesic/o ____________

Combining forms

ureter/o ureter

urethr/o urethra

urin/o urine

vesic/o urinary bladder

Combining forms

-ectasis ______________

-ectomy ______________

-emia ______________

-esis ______________

-gram ______________

-lithiasis ______________

Review Sheet Suffixes

-ectasis stretching; dilation

-ectomy removal; excision

-emia blood condition

-esis condition

-gram record

-lithiasis condition of stones

Review Sheet (cont’d) Suffixes

-lithotomy ____________________

-lysis ______________

-megaly ______________

-ole ______________

-osis ______________

-pathy ______________

Review Sheet (cont’d)Suffixes

-lithotomy incision for removal of a stone

-lysis breakdown

-megaly enlargement

-ole little; small

-osis condition

-pathy disease

-plasty _________________-poietin _______________

-ptosis _______________

-rrhea _______________

-sclerosis _______________

-stomy ___________________

-plasty surgical repair

-poietin substance that forms

-ptosis droop; sag

-rrhea flow; discharge

-sclerosis hardening

-stomy new opening (to form a mouth)

-tomy _____________-tripsy ___________

-uria ___________

-tomy process of cutting

-tripsy to crush

-uria urination

a-, an- _____________

anti- _____________

dia- _____________

dys- _____________

Review SheetPrefixes

a-, an- not; without

anti- again

dia- complete

dys- bad; painful

Review Sheet (cont’d)Prefixes

en- __________

peri- __________

poly- __________

retro- __________

en- in; within

peri- surrounding

poly- many, much

retro- behind; back

QUICK QUIZ:

6. The combining form dips/o means:

A. stone

B. scanty

C. thirst

D. water

QUICK QUIZ: (cont’d)

7. Which combining form means pus?

A. pyel/o

B. lith/o

C. ogli/o

D. py/o

QUICK QUIZ: (cont’d)

8. The combining form isch/o means:

A. scanty

B. to hold back; back

C. night

D. trigon

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