Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/17

Click to flip

17 Cards in this Set

  • Front
  • Back
renal tubules
The fluid that remains in the ______ _______ after filtration, reabsorption, and secretion is excreted as urine.
collecting ducts
The fluid drains from the __________ _____ into the ureter, a thin tube leading to the bladder.
Wavelike
ureter
_________ contractions of the smooth muscle in the walls of the _______ propel the urine toward the bladder.
bladder
micturition
The _______ stores the urine until it is elinated in the process called ____________, or urination.
gap junctions
The wall of the bladder contains smooth muscle fibers that are connected by ___ ________ and thus function as a unit.
detrusor muscle
The smooth muscle fibers of the bladder are known collectively as the _________ ________.
internal urethral sphincter
In the neck of the bladder, muscle fibers converge and overlap, forming a thickening of the wall referred to as the _________ _________ __________ that acts as valve to regulate the flow of urine from the bladder.
sphincter
A __________ is any muscle structure that form a ring around a hollow organ or tube and regulates the flow of material by contracting or relaxing.
contraction
relaxation
external urethral sphincter
The flow of urine from the bladder is also controlled by the _________ and _________ of skeletal muscle that surrounds the urethra as it passes through pelvic floor; this muscle is referred to as the _________ _________ __________.
Micturition
____________ is both under voluntary and involuntary control.
contract
relaxes
opens
relaxes
opens
Micturition occurs when the dtrusor muscle _______, the smooth muscle of the internal urethral sphincter ________ and this sphincter ______, and the skeletal muscle of the external urethral sphincter ________ and and this sphincter ______.
autonomic
Are the smooth muscle of the detrusor muscle and the internal urethral sphincter under voluntary or autonomic control?
voluntary
Is the skeletal muscle of the external urethral sphincter under voluntary or autonomic control?
spinal reflex
Micturition is regulated by a _______ _______ that can overridden by voluntary control in a trained individual .
parasympathetic
sympathetic
somatic
In the spinal cord, signals are relayed via interneurons to 3 sets of neurons that project back to the bladder and associated structures: _____________ neurons, which inntervated the detrusor muscle; ___________ neurons, which innervate the internal urethral sphincter; and _________ motor neurons, which innervate muscles of the external urethral sphincter.
contaction
internal urethral sphincter
inhibits
external urethral sphincter
_________ of the detrusor muscle increases the pressure on the contents of the bladder, and when the contraction of the detrusor muscle become strong enough they cause the _________ ________ _________ to open. At the same time, stratch receptor activity ________ sympathetic neurons projecting to the internal urethral sphincter and also inhibits somatic motor neurons projecting to the _________ _________ _________, allowing the sphincters to relax and open.
sphincters
The opening of both _________ coupled with the contraction of the detrusor muscle allows the bladder to empty.