Anatomy Physiology SIXTH EDITION Chapter 26 part 4

SECTION 26 -6 Urine Transport, Storage, and Elimination Copyright © 2004 Pearson Education, Inc.

Urine production ends with fluid entering the renal pelvis • Rest of urinary system

Figure 26. 17 A Radiographic View of the Urinary System Copyright © 2004 Pearson

The ureters • Pair of muscular tubes • Extend from renal pelvis to the

The urinary bladder • Hollow, muscular organ • Reservoir for the storage of urine

Figure 26. 19 Organs for the Collection and storage of Urine Copyright © 2004

The urethra • Extends from the urinary bladder to the exterior of the body

Figure 26. 20 The Histology of the Organs that Collect and Transport Urine Copyright

Micturition reflex and urination • Urination coordinated by micturition reflex • Initiated by stretch

Figure 26. 21 The Micturition Reflex Copyright © 2004 Pearson Education, Inc. , publishing

SECTION 26 -7 Aging and the Urinary System Copyright © 2004 Pearson Education, Inc.

Changes with aging include: • Decline in the number of functional nephrons • Reduction

You should now be familiar with: • The components of the urinary system and

You should now be familiar with: • The factors that influence filtration pressure and

Slides: 19

Download presentation

Anatomy & Physiology SIXTH EDITION Chapter 26, part 4 The Urinary System Power. Point® Lecture Slide Presentation prepared by Dr. Kathleen A. Ireland, Biology Instructor, Seabury Hall, Maui, Hawaii Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings Frederic H. Martini Fundamentals of

Urine production ends with fluid entering the renal pelvis • Rest of urinary system transports, stores and eliminates • Ureters • Bladder • Urethra Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

The ureters • Pair of muscular tubes • Extend from renal pelvis to the bladder • Peristaltic contractions force urine toward the urinary bladder Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

The urinary bladder • Hollow, muscular organ • Reservoir for the storage of urine • Contraction of detrusor muscle voids bladder • Internal features include • Trigone • Neck • Internal urethral sphincter • Ruggae Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

The urethra • Extends from the urinary bladder to the exterior of the body • Passes through urogenital diaphragm (external urinary sphincter) • Differs in length and function in males and females Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

Micturition reflex and urination • Urination coordinated by micturition reflex • Initiated by stretch receptors in wall of bladder • Urination requires coupling micturition reflex with relaxation of external urethral sphincter Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

Changes with aging include: • Decline in the number of functional nephrons • Reduction of GFR • Reduced sensitivity to ADH • Problems with the micturition reflex Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

You should now be familiar with: • The components of the urinary system and their functions • The location and structural features of the kidneys • The structure of a nephron, and the processes involved in the formation of urine • The normal characteristics, composition, and solute concentrations of a representative urine sample Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

You should now be familiar with: • The factors that influence filtration pressure and the rate of filtrate formation • The types of transport mechanisms found along the nephron • How antidiuretic hormone and aldosterone levels influence the volume and concentration of urine Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings